Steering Lock System Steering Lock Motor Drive Power Circuit

Steering. Camry. Acv40 Gsv40
Steering Column. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE CONDITION

READ VALUE USING INTELLIGENT TESTER

INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BODY GROUND)

CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU)

INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU)

STEERING LOCK SYSTEM - Steering Lock Motor Drive Power Circuit


DESCRIPTION

The steering lock ECU (steering lock actuator assembly) is connected to the main body ECU and certification ECU (smart key ECU assembly). The steering lock ECU (steering lock actuator assembly) cannot activate the motor unless it receives permission signals from both ECUs. (The main body ECU permits the steering lock ECU (steering lock actuator assembly) to supply power to activate the motor.)

WIRING DIAGRAM


Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit


INSPECTION PROCEDURE

NOTICE:
If the steering lock ECU (steering lock actuator assembly) is replaced, with the engine switch off and the shift lever in P, open and close the driver door to record the current lock position into the steering lock ECU (steering lock actuator assembly). If this is not performed, the engine may not start.
HINT:
When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following steps to wake up the ECU:
With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.
1.CHECK VEHICLE CONDITION

  1. Check the problem symptom of the steering lock system.

    Result:
    Condition
    		Proceed to
    Steering lock cannot be released
    		A
    Steering cannot be locked
    		B


B
Go to step 6
A


2.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG), and turn the intelligent tester on.

  1. Select the item below in the DATA LIST, and read its value displayed on the intelligent tester.

    Entry & Start:
    Item
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    LCK/UNLCK REC
    		Steering lock command reception record / YES or NO
    		YES: Steering lock/unlock signal received
    NO: Steering lock/unlock signal not received
    		-

  1. Check if a steering unlock command signal has been received.

    OK:
    "YES" is displayed on the intelligent tester display.


NG
CHECK ENTRY AND START SYSTEM (CAMRY_ACV40 RM000000YEF0B0X.html)
OK


3.INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


    Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E69-3 (IGE) - E69-1 (GND)
    1. Engine switch off
    2. Engine switch on (ACC or IG)
    1. Motor activated: Below 1 V
    2. Motor not activated:
      10 to 12 V


NG
Go to step 4
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 RM000000XWP050X.html)

4.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BODY GROUND)


    Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Disconnect the E69 connector from the steering lock ECU.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E69-1 (GND) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU)


    Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Disconnect the E7 connector from the main body ECU.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E69-3 (IGE) - E7-19 (SLR+)
    		Always
    		Below 1 Ω
    E69-3 (IGE) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU

6.INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)


    Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E69-3 (IGE) - E69-1 (GND)
    		The specified condition should be checked after performing the following:
    1. Move the shift lever to the P position
    2. Turn the engine switch off
    3. Open the driver door
    1. Motor activated: Below 1 V
    2. Motor not activated:
      10 to 12 V


NG
Go to step 7
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 RM000000XWP050X.html)

7.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - MAIN BODY ECU)


    Camry. Acv40 Gsv40.Steering Column.Steering System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Disconnect the E69 connector from the steering lock ECU.

  1. Disconnect the E7 connector from the main body ECU.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E69-3 (IGE) - E7-19 (SLR+)
    		Always
    		Below 1 Ω
    E69-3 (IGE) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU