Toyota Avalon (XX50): Theft Deterrent System(for Hv Model)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Theft Deterrent System(for Hv Model)

Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS

NOTICE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
Make sure the power switch is off, all the doors and the hood are closed and all the doors have been locked by wireless operation or entry operation.

Operation History

HINT:

The main body ECU (multiplex network body ECU) stores Operation History, which can be read using the Techstream, when a malfunction of the theft deterrent system occurs.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

Body Electrical > Main Body > Utility

Tester Display
Operation History

(e) According to the display on the Techstream, read and save the operation history.

Operation History List
Battery Desorption
Hood Open
Luggage Open
Door Open
Door Unlock
IG
Intrusion Sensor Detect
Glass Sensor
Tilt Sensor
Intrusion Sensor Sound Detect
Intrusion Sensor Detect at Window Open
Panic Alarm

HINT:

Depending on the specifications of the vehicle some items may not be displayed.

Symptom Simulation

Click here

Customize Parameters

CUSTOMIZE PARAMETERS

CUSTOMIZE THEFT DETERRENT SYSTEM

NOTICE:

When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, first make sure that the function is set to the default setting.

HINT:

The following items can be customized.

(a) Customizing with the Techstream

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Customize Setting / Wireless Door Lock.

(5) Select the setting by referring to the table below.

Wireless Door Lock

Tester Display	Description	Default	Setting	ECU
Panic Function	This function makes it possible to operate the theft deterrent system by continuously pressing the panic switch on the key for 0.8 seconds	ON	0:OFF,1:ON	Main body ECU (Multiplex network body ECU)

Data List / Active Test

DATA LIST / ACTIVE TEST

DATA LIST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
ACC SW	Power switch	OFF or ON	OFF: Power switch off ON: Power switch on (ACC)	-
IG SW	Power switch	OFF or ON	OFF: Power switch off or ACC ON: Power switch on (IG)	-
RR Door Courtesy SW	Rear door courtesy light switch assembly (for RH)	OFF or ON	OFF: Rear door RH closed ON: Rear door RH open	-
RL Door Courtesy SW	Rear door courtesy light switch assembly (for LH)	OFF or ON	OFF: Rear door LH closed ON: Rear door LH open	-
FR Door Lock Pos	Front door RH unlock detection switch	LOCK or UNLOCK	LOCK: Front door RH locked UNLOCK: Front door RH unlocked	-
FR Door Courtesy SW	Front door courtesy light switch assembly (for RH)	OFF or ON	OFF: Front door RH closed ON: Front door RH open	-
FL Door Lock Pos	Front door LH unlock detection switch	LOCK or UNLOCK	LOCK: Front door LH locked UNLOCK: Front door LH unlocked	-
FL Door Courtesy SW	Front door courtesy light switch assembly (for LH)	OFF or ON	OFF: Front door LH closed ON: Front door LH open	-
Hood Courtesy SW	Engine hood courtesy switch	OFF or ON	OFF: Engine hood closed ON: Engine hood open	-
RR-Door Lock Pos SW	Rear door RH unlock detection switch	OFF or ON	OFF: Rear door RH locked ON: Rear door RH unlocked	-
RL-Door Lock Pos SW	Rear door LH unlock detection switch	OFF or ON	OFF: Rear door LH locked ON: Rear door LH unlocked	-
Luggage Courtesy SW	Luggage compartment door courtesy light switch signal	OFF or ON	OFF: Luggage compartment door closed ON: Luggage compartment door open	-
Intrusion Sens OFF SW	Intrusion sensor cancel switch*	OFF or ON	OFF: Intrusion sensor cancel switch off ON: Intrusion sensor cancel switch on	Not applicable
Glass Break Sensor Detection	Glass breakage sensor breakage detection*	OFF or ON	OFF: Glass breakage sensor breakage not detected ON: Glass breakage sensor breakage detected	Not applicable
Intrusion Sensor	Detection status of the intrusion sensor (theft warning ultrasonic sensor)*	OFF or ON	OFF: Intrusion not detected ON: Intrusion detected	Not applicable
Intrusion Sen Conn	Intrusion sensor (theft warning ultrasonic sensor) connection*	OFF or ON	OFF: Intrusion sensor not connected ON: Intrusion sensor connected	Not applicable
Intrusion Sensor Sound Detect	Sound detection status of the intrusion sensor (theft warning ultrasonic sensor)*	OFF or ON	OFF: Sound not detected ON: Sound detected	Not applicable
Panic Function	Setting of customize setting "Panic Function"	OFF or ON	Customize setting displayed	-
Intrusion Win Opened	Setting of customize setting "Intrusion Win Opened"*	OFF or ON	Customize setting displayed	Not applicable
Communication Theft Deterrent	Connection status between theft deterrent ECU and main body ECU (multiplex network body ECU)*	STOP or OK	STOP: Communication stopped OK: Normal communication	Not applicable

*: Although the item is displayed on the Techstream, it is not applicable to this vehicle.

ACTIVE TEST

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body or Smart Key / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Security Indicator	Security indicator	OFF/ON	Not applicable
Security Horn2	Theft warning siren assembly*	OFF/ON	Not applicable
Vehicle Horn	Vehicle horns	OFF/ON	-
Security Horn	Security horn assembly	OFF/ON	-
Power For Intrusion Sensor	Intrusion sensor (theft warning ultrasonic sensor) power supply*	OFF/ON	Not applicable

*: Although the item is displayed on the Techstream, it is not applicable to this vehicle.

Body Electrical > Smart Key > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Immobiliser Indicator	Security indicator	OFF/ON	-

Diagnosis System

DIAGNOSIS SYSTEM

CHECK DLC3

(a) Check the DLC3.

Click here

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, replace the auxiliary battery.

Engine Hood Courtesy Switch Circuit

DESCRIPTION

The engine hood courtesy switch is built into the hood lock assembly. This switch turns on when the engine hood is closed and turns off when the engine hood is opened.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

PROCEDURE

1.	READ VALUE USING TECHSTREAM (HOOD COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Hood Courtesy SW	Engine hood courtesy switch	OFF or ON	OFF: Engine hood closed ON: Engine hood open	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hood Courtesy SW

Engine hood courtesy switch

OFF or ON

OFF: Engine hood closed

ON: Engine hood open

Body Electrical > Main Body > Data List

Tester Display
Hood Courtesy SW

OK:

The Techstream display changes correctly in response to the engine hood courtesy switch (hood lock assembly) status.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

(a) Remove the hood lock assembly.

Click here

(b) Inspect the engine hood courtesy switch (hood lock assembly).

Click here

REPLACE ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) AND BODY GROUND)

(a) Disconnect the G33 main body ECU (multiplex network body ECU) connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G33-30 (HCTY) - A12-2	Always	Below 1 Ω
G33-30 (HCTY) or A12-2 - Body ground	Always	10 kΩ or higher
A12-1 - Other terminals and body ground	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

Horn Circuit

DESCRIPTION

When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the horns to sound at intervals of 0.4 seconds.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	INSPECT HORNS

(a) Press the horn switch and check if the horns sound.

Result	Proceed to
Horns sound	A
Horns do not sound	B

GO TO HORN SYSTEM

2.	INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU).

Click here

Component without harness connected

(Instrument Panel Junction Block Assembly)

(b) Disconnect the 4F instrument panel junction block assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
4F-27 - MB-28 (HORN)	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use this procedure to troubleshoot the theft deterrent system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS CHECK

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency, whether the problem occurred recently or has been occurring for a long time
Where	Whether the problem occurs at a specific location
Under what conditions?	Whether the doors were locked or unlocked, whether the power switch was on (IG), whether the hybrid control system has started.
How did it happen?	Problem symptoms

3.	READ AND SAVE OPERATION HISTORY

NOTICE:

If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.

(a) Read and save operation history using the Techstream.

Click here

Body Electrical > Main Body > Utility

Tester Display
Operation History

PRE-CHECK

(a) Measure the auxiliary battery voltage with the power switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

5.	SYMPTOM SIMULATION

6.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM

7.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) Check the power door lock control system.

Click here

OK:

Power door lock control system is normal

GO TO POWER DOOR LOCK CONTROL SYSTEM

8.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check the wireless door lock control system.

Click here

OK:

Wireless door lock control system is normal

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

9.	CHECK SMART KEY SYSTEM (for Entry Function)

(a) Check the smart key system (for Entry Function).

Click here

OK:

Smart key system (for Entry Function) is normal

GO TO SMART KEY SYSTEM (for Entry Function)

10.	CHECK SMART KEY SYSTEM (for Start Function)

(a) Check the smart key system (for Start Function).

Click here

OK:

Smart key system (for Start Function) is normal

GO TO SMART KEY SYSTEM (for Start Function)

11.	CHECK LIGHTING SYSTEM (EXT)

(a) Check the lighting system (EXT).

w/ Cornering Light: Click here

w/o Cornering Light: Click here

OK:

Lighting system (EXT) is normal

Result	Proceed to
OK	A
NG (w/ Cornering Light)	B
NG (w/o Cornering Light)	C

GO TO LIGHTING SYSTEM (EXT)

12.	CHECK LIGHTING SYSTEM (INT)

(a) Check the lighting system (INT).

Click here

OK:

Lighting system (INT) is normal

GO TO LIGHTING SYSTEM (INT)

13.	CHECK LUGGAGE COMPARTMENT DOOR OPENER SYSTEM

(a) Check the luggage compartment door opener system.

Click here

OK:

Luggage compartment door opener system is normal

GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM

14.	CHECK HORN SYSTEM

(a) Check the horn system.

OK:

Horn system is normal

GO TO HORN SYSTEM

15.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table (Fault can be simulated)	A
Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)	B
Fault is listed in Problem Symptoms Table	C

CHECK FOR INTERMITTENT PROBLEMS

GO TO STEP 17

16.	PERFORM OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) System Description

Click here

(b) Terminals of ECU

Click here

(d) Inspection

17.	REPAIR OR REPLACE

18.	CONFIRMATION TEST

END

Improper Operation

DESCRIPTION

If the alarm function of the theft deterrent system operates unintentionally, one of the following may be the cause.

Short to ground in any door courtesy light switch circuit or the engine hood courtesy switch (hood lock assembly) circuit.
Unstable main body ECU (multiplex network body ECU) power source voltage.

HINT:

Preconditions for arming preparation:

Make sure the power switch is off, all the doors and the hood are closed and all the doors have been locked by wireless operation or entry operation.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
The theft deterrent system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the theft deterrent system after confirming that the communication system is functioning properly.
Click here
The following troubleshooting procedure is based on the assumption that systems related to the theft deterrent system are normal. Confirm that the systems related to the theft deterrent system are not malfunctioning before performing the following procedure.
Click here
If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.

PROCEDURE

1.	CHECK THEFT DETERRENT SYSTEM OPERATION HISTORY

(a) Use the Techstream to check the theft deterrent system operation history around the time the customer reported the malfunction to have occurred.

Click here

(1) Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

Result	Proceed to
There is operation history around the time that the customer reported the malfunction to have occurred, but a malfunction could not be identified during the operation check.	A
There is operation history around the time that the customer reported the malfunction to have occurred, and the malfunction was identified during the operation check.	B
There is no operation history around the time that the customer reported the malfunction to have occurred.	C

GO TO STEP 7

END

2.	CHECK SECURITY INDICATOR LIGHT OPERATION

(a) Check that the security indicator light is illuminated when the theft deterrent system is in the arming preparation state.

Click here

(b) Check that the security indicator light blinks when the theft deterrent system is in the arming state.

Click here

State of Theft Deterrent System	Contents	Security Indicator Light Condition
Disarmed state (1), (2)	Theft deterrent system is unset.	Off (Immobiliser system unset) Blinking (Immobiliser system set)
Arming preparation state	Standby period after theft deterrent system set conditions are met but before theft deterrent system is actually set (approximately 30 seconds). (Theft detection not possible)	On
Armed state	Theft deterrent system is set. (Theft detection is possible)	Blinking (Immobiliser system set)
Alarm sounding state	Theft attempt is detected, and alarm operates using turn signal lights, security horn assembly and vehicle horns. (Alarm sounds for 57 seconds)	On

GO TO OTHER PROBLEM

3.	READ VALUE USING TECHSTREAM (Hood Courtesy SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hood Courtesy SW

Engine hood courtesy switch

OFF or ON

OFF: Engine hood closed

ON: Engine hood open

Body Electrical > Main Body > Data List

Tester Display
Hood Courtesy SW

OK:

The Techstream display changes correctly in response to the engine hood courtesy switch (hood lock assembly) status.

GO TO STEP 5

4.	INTERVIEW THE CUSTOMER

(a) If the problem symptoms could not be reproduced, explain to the customer the details of the operation history, such as the input signal timings of the key, etc.

Click here

OK:

Cause was identified

END

CHECK FOR INTERMITTENT PROBLEMS

5.	INSPECT ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY)

(a) Remove the hood lock assembly.

Click here

(b) Inspect the engine hood courtesy switch (hood lock assembly).

Click here

REPLACE HOOD LOCK ASSEMBLY

6.	CHECK HARNESS AND CONNECTOR (ENGINE HOOD COURTESY SWITCH (HOOD LOCK ASSEMBLY) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the A12 engine hood courtesy switch (hood lock assembly) connector.

(b) Disconnect the G33 main body ECU (multiplex network body ECU) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G33-30 (HCTY) - A12-2 (+)	Always	Below 1 Ω
G33-30 (HCTY) or A12-2 (+) - Other terminals and body ground	Always	10 kΩ or higher
A12-1 (E) - Body ground	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	INTERVIEW THE CUSTOMER

(a) If the problem symptoms could not be reproduced, explain to the customer the details of the operation history, such as the input signal timings of the key, etc.

Click here

OK:

Cause was identified

END

CHECK FOR INTERMITTENT PROBLEMS

Parts Location

PARTS LOCATION

ILLUSTRATION

*1	ENGINE HOOD COURTESY SWITCH	*2	HIGH PITCHED HORN ASSEMBLY
*3	HORN RELAY	*4	LOW PITCHED HORN ASSEMBLY
*5	SECURITY HORN ASSEMBLY	*6	NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - HORN FUSE
*7	HOOD LOCK ASSEMBLY	*8	HEADLIGHT ASSEMBLY LH - LOW BEAM - TURN SIGNAL LIGHT
*9	HEADLIGHT ASSEMBLY RH - LOW BEAM - TURN SIGNAL LIGHT	*10	SIDE TURN SIGNAL LIGHT ASSEMBLY LH
*11	SIDE TURN SIGNAL LIGHT ASSEMBLY RH	*12	ROOF CONSOLE BOX SUB-ASSEMBLY - INTERIOR LIGHT

ILLUSTRATION

*1	FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for LH)	*2	FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for RH)
*3	FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH	*4	FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH
*5	LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY	*6	REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (for LH)
*7	REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (for RH)	*8	REAR DOOR LOCK WITH MOTOR ASSEMBLY LH
*9	REAR DOOR LOCK WITH MOTOR ASSEMBLY RH	*10	REAR COMBINATION LIGHT ASSEMBLY LH - TAILLIGHT - TURN SIGNAL LIGHT
*11	REAR COMBINATION LIGHT ASSEMBLY RH - TAILLIGHT - TURN SIGNAL LIGHT	*12	REAR LIGHT ASSEMBLY LH
*13	REAR LIGHT ASSEMBLY RH	-	-

ILLUSTRATION

*1	POWER SWITCH	*2	RADIO AND DISPLAY RECEIVER ASSEMBLY
*3	S-HORN RELAY	*4	MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*5	INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-DCC NO. 2 FUSE - ECU-ACC FUSE - ECU-IG1 NO. 4 FUSE - S-HORN FUSE	*6	CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
*7	DLC3	*8	COMBINATION METER ASSEMBLY
*9	NO. 5 RELAY BLOCK	*10	SECURITY INDICATOR LIGHT

Power Source Circuit

DESCRIPTION

Based on changes in the power source voltage, the main body ECU (multiplex network body ECU) can detect if the auxiliary battery has been disconnected and reconnected.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (POWER SUPPLY)

(a) Disconnect the 4F instrument panel junction block assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
4F-1 - Body ground	Always	8.5 V or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU).

Click here

Component without harness connected

(Instrument Panel Junction Block Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
4F-1 - MB-31 (BECU)	Always	Below 1 Ω

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected.

System Name	See Procedure
Lane Departure Alert System (w/ Steering Control)
Intelligent Clearance Sonar System
Parking Assist Monitor System
Panoramic View Monitor System
Pre-collision System
Lighting System (for HV Model with Cornering Light)

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

Click here

HINT:

Troubleshooting of the theft deterrent system is based on the premise that the power door lock control system and the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that the power door lock control system and the wireless door lock control system are operating normally.
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Theft Deterrent System

Symptom	Suspected Area	Link
Theft deterrent system cannot be set	Refer to "Security Indicator Light Does not Blink"
	Refer to "Front Door Courtesy Switch Circuit"
	Refer to "Rear Door Courtesy Switch Circuit"
	Refer to "Luggage Compartment Door Courtesy Switch Circuit"
	Front door lock with motor assembly
	Rear door lock with motor assembly
	Luggage compartment door lock assembly
	Refer to "Engine Hood Courtesy Switch Circuit"
Security indicator light does not blink when theft deterrent system is set	Refer to "Security Indicator Light Does not Blink"
Alarm sounding state cannot be canceled when power switch is turned on (IG)	Refer to "Smart Key System (for Start Function)"
	Certification ECU (Smart key ECU assembly)	-
	If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Theft deterrent system can be set even when door is open	Refer to "Front Door Courtesy Switch Circuit"
	Refer to "Rear Door Courtesy Switch Circuit"
	Refer to "Luggage Compartment Door Courtesy Switch Circuit"
	If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Theft deterrent system can be set even when engine hood is open	Refer to "Engine Hood Courtesy Switch Circuit"
Vehicle horns do not sound while theft deterrent system is in alarm sounding state	Refer to "Horn Circuit"
Low beams do not blink while theft deterrent system is in alarm sounding state	Refer to "LIGHTING SYSTEM"*1
	Refer to "LO-beam Headlight does not Illuminate"*2
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Taillights do not blink while theft deterrent system is in alarm sounding state	Refer to "Taillight Relay Circuit"*1
	Refer to "Taillight Relay Circuit"*2
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Hazard warning lights do not flash while theft deterrent system is in alarm sounding state	Combination meter assembly	-
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Interior lights does not light up while theft deterrent system is in alarm sounding state	Refer to "Interior Light Circuit"
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Security horn does not sound while theft deterrent system is in alarm sounding state	Refer to "Security Horn Circuit"
Low beams blink even when theft deterrent system is not set	Refer to "LIGHTING SYSTEM"*1
	Refer to "LO-beam Headlight does not Illuminate"*2
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Taillights blink even when theft deterrent system is not set	Refer to "Taillight Relay Circuit"*1
	Refer to "Taillight Relay Circuit"*2
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Hazard warning lights flash even when theft deterrent system is not set	Combination meter assembly	-
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
Interiors light comes on even when theft deterrent system is not set	Refer to "Interior Light Circuit"
	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (multiplex network body ECU)
The vehicle does not enter the alarm sounding state as the auxiliary battery is reconnected	Check the auxiliary battery
	Refer to "Power Source Circuit"

*1: w/ Cornering Light
*2: w/o Cornering Light

Security Horn Circuit

DESCRIPTION

When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the security horn assembly to sound at intervals of 0.4 seconds.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY HORN)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Security Horn	Security horn Assembly	OFF/ON	-

Body Electrical > Main Body > Active Test

Tester Display
Security Horn

OK:

The security horn assembly sounds and stops correctly when operated through the Techstream.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

2.	INSPECT SECURITY HORN ASSEMBLY

(a) Remove the security horn assembly.

Click here

(b) Inspect the security horn assembly.

Click here

REPLACE SECURITY HORN ASSEMBLY

3.	INSPECT S-HORN RELAY

(a) Remove the S-HORN relay from the No. 5 relay block.

*1	S-HORN Relay

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
3 - 5	Auxiliary battery voltage not applied between terminals 1 and 2	10 kΩ or higher
3 - 5	Auxiliary battery voltage applied between terminals 1 and 2	Below 1 Ω

REPLACE S-HORN RELAY

4.	INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU).

Click here

Component without harness connected

(Instrument Panel Junction Block Assembly)

(b) Disconnect the 4A instrument panel junction block assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
4A-20 - MB-29 (SH)	Always	Below 1 Ω

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - S-HORN RELAY)

(a) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
No. 5 relay block S-HORN relay terminal 1 - Body ground	Power switch off	11 to 14 V
No. 5 relay block S-HORN relay terminal 3 - Body ground	Power switch off	11 to 14 V

*1	No. 5 Relay Block

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (S-HORN RELAY - SECURITY HORN ASSEMBLY)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
No. 5 relay block S-HORN relay terminal 5 - A11-1	Always	Below 1 Ω
No. 5 relay block S-HORN relay terminal 5 or A11-1 - Other terminals and body ground	Always	10 kΩ or higher

*1	No. 5 Relay Block

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK HARNESS AND CONNECTOR (S-HORN RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
No. 5 relay block S-HORN relay terminal 2 - 4A-20	Always	Below 1 Ω
No. 5 relay block S-HORN relay terminal 2 or 4A-20 - Other terminals and body ground	Always	10 kΩ or higher

*1	No. 5 Relay Block

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

System Description

SYSTEM DESCRIPTION

OUTLINE OF THEFT DETERRENT SYSTEM

The theft deterrent system can be set/canceled by locking/unlocking the doors using any of the following operations:
- Entry lock/unlock operation
- Wireless lock/unlock operation*1
- Key linked lock/unlock operation
- Opening and closing the doors*2
  - *1: Using the remote door lock and unlock is also considered to be a wireless lock/unlock operation. (for Toyota Entune Remote Connect Compatible Type)
  - *2: Only when setting the theft deterrent system.
The alarm function will be activated when someone attempts to forcibly unlock any of the doors or open any of the doors, the engine hood or luggage compartment door while the system is in the armed state.
In the alarm sounding state, the system illuminates the interior lights and blinks the turn signal lights and the exterior lights. At the same time, the system sounds the vehicle horns and security horn assembly to deter break-in and theft as well as to warn people around the vehicle.
HINT:

The interior lights are illuminated if the interior light door switch in the roof console box assembly are on.
The theft deterrent system has an active arming mode. There are 4 states in this mode; a disarmed state, an arming preparation state, an armed state and an alarm sounding state.

(a) Disarmed state:

The alarm function is not operating.
The theft deterrent system is not operating.

(b) Arming preparation state:

The time until the system goes into the armed state.
The theft deterrent system is not operating.

The theft deterrent system is operating.

(d) Alarm sounding state:

The alarm function is operating.

Alarm time:

Approximately 57 seconds

Alarm Methods

Alarm Method	Exterior Lights Low Beams Taillights	Blinking
	Turn Signal Lights	Blinking
	Interior Lights	Illuminating
	Vehicle Horns	Sounding (Approximately 0.4-second cycles)
	Security Horn Assembly	Sounding (Approximately 0.4-second cycles)

FUNCTION OF MAIN COMPONENTS

Component	Function
Security indicator light	Informs driver of theft deterrent system status.
Security horn assembly	Sounds when attempted break-in or theft is detected.
Low beams	Blink when attempted break-in or theft is detected.
Taillights	Blink when attempted break-in or theft is detected. Come on when theft deterrent system has entered alarm sounding state.
Turn signal lights	Blink when attempted break-in or theft is detected.
Interior lights	Comes on when attempted break-in or theft is detected.
Vehicle horns	Sound when attempted break-in or theft is detected.
Front door courtesy light switch assembly (for LH/RH) Rear door courtesy light switch assembly (for LH/RH)	Detects door status (open or closed).
Door unlock detection switch	Detects door status (locked or unlocked).
Engine hood courtesy switch (Hood lock assembly)	Detects engine hood status (open or closed).
Certification ECU (Smart key ECU assembly)	Receives wireless door lock/unlock signal. Receives entry door lock/unlock signal.
Luggage compartment door lock assembly	Detects luggage compartment door status (open or closed).

ACTIVE ARMING MODE

(a) Active arming mode:

This system operates as described in the diagram below when one of the items for each condition is met.

HINT:

The term "all doors" used in this section refers to the driver door, front passenger door, rear door LH and rear door RH.
Using the remote door lock and unlock is also considered to be a wireless lock/unlock operation.*
- *: for Toyota Entune Remote Connect Compatible Type

Condition	Item
Condition [1]	In disarmed state 1, when the power switch is turned off, the system state is changed if the following condition is met: With all doors, the luggage compartment door and the engine hood closed, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. In disarmed state 1, when the power switch is off, the engine hood and the luggage compartment door are closed and all doors are locked, the system state is changed if the following condition is met: All doors are closed when any door is open.
Condition [2]	Approximately 30 seconds elapse.
Condition [3]	All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation. Any door is unlocked. Any door is opened. The power switch is pushed. The power switch is turned on (ACC) or on (IG). (Not using the remote start.*) The auxiliary battery is reconnected.
Condition [4]	The engine hood is opened when it was closed. The luggage compartment door is opened when it was closed. The auxiliary battery is reconnected while the engine hood or the luggage compartment door is open or any door is unlocked. Any door is opened when all doors are closed. Any door is unlocked when all doors are locked. When 5 seconds or more have elapsed since the power switch is pressed, the power source mode is changed from off to on (IG) without pressing the power switch. (Not using the remote start.*)
Condition [5]	The power switch is turned on (READY). All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation. The power switch is turned on (ACC) or on (IG) within 5 seconds after the power switch is pushed. (Not using the remote start.*)
Condition [6]	After approximately 57 seconds, the alarm stops and the system returns to the armed state.
Condition [7]	The luggage compartment door is opened by wireless operation or the smart key system.
Condition [8]	The luggage compartment door is closed when the engine hood is closed. The engine hood is closed when the luggage compartment door is closed.
Condition [9]	Any door is unlocked when all doors are locked. Any door is opened. The power switch is pushed. The power switch is turned on (ACC) or on (IG). (Not using the remote start.*) The auxiliary battery is reconnected. All doors are unlocked by wireless operation, the smart key system or key linked power door lock operation.
Condition [10]	In disarmed state 1, when the power switch is turned off, the system state is changed if the following condition is met: With all doors closed and the engine hood and the luggage compartment door open, all doors are locked by wireless operation, the smart key system or key linked power door lock operation. In disarmed state 1, when the power switch is off, the engine hood and the luggage compartment door are open and all doors are locked, the system state is changed if the following condition is met: All doors are closed when any door is open.
Condition [11]	The engine hood is opened. The luggage compartment door is opened. The luggage compartment door is opened by wireless operation or the smart key system.

*: for Toyota Entune Remote Connect Compatible Type

FORCED DOOR LOCK CONTROL

(a) The forced door lock control prevents the vehicle from being tampered with. Immediately after a door is unlocked (armed state), all doors are forced to lock by a forced door lock signal.

(1) If the following conditions are met, the forced door lock control is operated.

The theft deterrent system is in the armed state.
Any door is unlocked.

ALARM MEMORY FUNCTION

(a) If the alarm is set off (tampering is detected) while the theft deterrent system is in the armed state, it will be stored by the alarm memory function. Whenever the theft deterrent system is canceled, the alarm memory function causes the taillights to light up for 2 seconds in order to inform the user that the alarm has been set off.

(1) Condition that cause the taillights to light up for 2 seconds:

The theft deterrent system has entered the alarm sounding state (tampering has been detected) at least once.

HINT:

Active arming mode: See Active Arming Mode.

PANIC ALARM CONTROL

(a) Panic alarm control makes it possible to voluntarily set off the panic alarm by pressing the panic switch on the key.

(1) Conditions that cause panic alarm control to set off the panic alarm:

The panic switch on the key is pressed under the following conditions:

The power switch is off.
The theft deterrent system is not in the alarm sounding state.

(2) Conditions that cause the panic alarm control to shut off the alarm:

Any of the following conditions is met during panic alarm control operation:

The power switch is turned on (IG).
The panic switch is pressed again.
Any of the switches on the key (lock/unlock/luggage compartment door open) is pressed.
The panic alarm ends (approximately 57 seconds have elapsed).
The theft deterrent system switches to the alarm sounding state. Under this condition, the theft deterrent system controls the alarm rather than the panic alarm control. In order to cancel this alarm, refer to the theft deterrent system alarm sounding state cancellation procedure.

SECURITY INDICATOR LIGHT OUTPUT

(a) According to the state of the theft deterrent system, the main body ECU (multiplex network body ECU) outputs a signal to turn the security indicator light on. However, some of the actual lighting conditions of the security indicator light are different from the output signals of the main body ECU (multiplex network body ECU).

Output

State of Theft Deterrent System	Security Indicator Light
State of Theft Deterrent System	Output Signal from Main Body ECU (Multiplex Network Body ECU)	Actual Lighting Condition
Disarmed state (1), (2)	Off	Off (Immobiliser system unset) Blinking (Immobiliser system set)
Arming preparation state	On	On
Armed state	Off	Blinking
Alarm sounding state	On	On

Blinking Cycle

Time	Security Indicator Light
0.125 sec.	On
1.875 sec.	Off

HINT:

When the immobiliser system is set, the security indicator light blinks during both the disarmed state and the armed state due to output signals from the immobiliser system.

System Diagram

SYSTEM DIAGRAM

Terminals Of Ecu

TERMINALS OF ECU

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

Click here

(b) Measure the resistance according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connectors connected.

Terminal No. (Symbol)	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition	Related Data List Item
G32-19 (GND2) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-

(d) Measure the resistance and voltage according to the value(s) in the table below.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition	Related Data List Item
MB-31 (BECU) - Body ground	-	Input	Auxiliary battery power supply	Power switch off	11 to 14 V	-
MB-32 (IG) - Body ground	-	Input	Ignition power supply (IG signal)	Power switch off	Below 1 V	IG SW
MB-32 (IG) - Body ground	-	Input	Ignition power supply (IG signal)	Power switch on (IG)	11 to 14 V	IG SW
MB-30 (ACC) - Body ground	-	Input	Ignition power supply (ACC signal)	Power switch off	Below 1 V	ACC SW
MB-30 (ACC) - Body ground	-	Input	Ignition power supply (ACC signal)	Power switch on (IG)	11 to 14 V	ACC SW
MB-11 (GND1) - Body ground	-	-	Ground	Always	Below 1 Ω	-
G33-1 (FLCY) - Body ground	W - Body ground	Input	Front door courtesy light switch assembly (for LH) input	Front door LH closed	10 kΩ or higher	FL Door Courtesy SW
G33-1 (FLCY) - Body ground	W - Body ground	Input	Front door courtesy light switch assembly (for LH) input	Front door LH open	Below 1 Ω	FL Door Courtesy SW
G33-6 (FRCY) - Body ground	BE - Body ground	Input	Front door courtesy light switch assembly (for RH) input	Front door RH closed	10 kΩ or higher	FR Door Courtesy SW
G33-6 (FRCY) - Body ground	BE - Body ground	Input	Front door courtesy light switch assembly (for RH) input	Front door RH open	Below 1 Ω	FR Door Courtesy SW
MB-13 (LCTY) - Body ground	-	Input	Rear door courtesy light switch assembly (for LH) input	Rear door LH closed	10 kΩ or higher	RL Door Courtesy SW
MB-13 (LCTY) - Body ground	-	Input	Rear door courtesy light switch assembly (for LH) input	Rear door LH open	Below 1 Ω	RL Door Courtesy SW
MB-2 (RCTY) - Body ground	-	Input	Rear door courtesy light switch assembly (for RH) input	Rear door RH closed	10 kΩ or higher	RR Door Courtesy SW
MB-2 (RCTY) - Body ground	-	Input	Rear door courtesy light switch assembly (for RH) input	Rear door RH open	Below 1 Ω	RR Door Courtesy SW
G33-30 (HCTY) - Body ground	GR - Body ground	Input	Engine hood courtesy switch input	Engine hood open	10 kΩ or higher	Hood Courtesy SW
G33-30 (HCTY) - Body ground	GR - Body ground	Input	Engine hood courtesy switch input	Engine hood closed	Below 1 Ω	Hood Courtesy SW
MB-4 (LGCY) - Body ground	-	Input	Luggage compartment door courtesy light switch input	Luggage compartment door closed	10 kΩ or higher	Luggage Courtesy SW
MB-4 (LGCY) - Body ground	-	Input	Luggage compartment door courtesy light switch input	Luggage compartment door open	Below 1 Ω	Luggage Courtesy SW
MB-14 (TRLY) - Body ground	-	Output	Taillight relay drive output	Power switch off	11 to 14 V	-

(e) Install the main body ECU (multiplex network body ECU) to instrument panel junction block assembly.

Click here

(f) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition	Related Data List Item
4D-13 (LSFL) - Body ground	W - Body ground	Input	Front door LH unlock detection switch input	Front door LH unlocked	Below 1 V	FL Door Lock Pos SW
4D-13 (LSFL) - Body ground	W - Body ground	Input	Front door LH unlock detection switch input	Front door LH locked	11 to 14 V	FL Door Lock Pos SW
4D-12 (LSFR) - Body ground	GR - Body ground	Input	Front door RH unlock detection switch input	Front door RH unlocked	Below 1 V	FR Door Lock Pos SW
4D-12 (LSFR) - Body ground	GR - Body ground	Input	Front door RH unlock detection switch input	Front door RH locked	11 to 14 V	FR Door Lock Pos SW
G34-18 (L2) - Body ground	LG - Body ground	Input	Driver door key-linked lock input	Driver door key cylinder turned to lock position	Below 1 V	Door Key SW-Lock
G34-18 (L2) - Body ground	LG - Body ground	Input	Driver door key-linked lock input	Driver door key cylinder off	11 to 14 V	Door Key SW-Lock
G34-17 (UL3) - Body ground	BE - Body ground	Input	Driver door key-linked unlock input	Driver door key cylinder turned to unlock position	Below 1 V	D Door Key SW-UL
G34-17 (UL3) - Body ground	BE - Body ground	Input	Driver door key-linked unlock input	Driver door key cylinder off	11 to 14 V	D Door Key SW-UL
4D-14 (LSWL) - Body ground	GR - Body ground	Input	Rear door LH unlock detection switch input	Rear door LH unlocked	Below 1 V	RL-Door Lock Pos SW
4D-14 (LSWL) - Body ground	GR - Body ground	Input	Rear door LH unlock detection switch input	Rear door LH locked	11 to 14 V	RL-Door Lock Pos SW
G32-20 (LSWR) - Body ground	L - Body ground	Input	Rear door RH unlock detection switch input	Rear door RH unlocked	Below 1 V	RR-Door Lock Pos SW
G32-20 (LSWR) - Body ground	L - Body ground	Input	Rear door RH unlock detection switch input	Rear door RH locked	11 to 14 V	RR-Door Lock Pos SW
4A-20 (SH) - Body ground	L - Body ground	Output	Security horn assembly drive	Security horn assembly sounding (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)	-
4F-27 (HORN) - Body ground	W - Body ground	Output	Vehicle horns drive	Vehicle horns sounding (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)	-
4F-31 (HRLY) - Body ground	V - Body ground	Input	H-LP LH relay drive output	Low beams blinking (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)	-
G33-12 (HRY2) - Body ground	BE - Body ground	Input	H-LP RH relay drive output	Low beams blinking (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)	-
4D-29 (ILE) - Body ground	LA-G - Body ground	Output	Interior lights drive output	Interior lights illuminated (Theft deterrent system in alarm sounding state)	Below 1 V	-

Theft Deterrent System(for Gasoline Model)

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