Steering Lock System Steering Lock Motor Drive Power Circuit

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Steering Column. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE CONDITION

READ VALUE USING INTELLIGENT TESTER (LOCK/UNLOCK RECEIVE)

INSPECT STEERING LOCK ECU

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

INSPECT STEERING LOCK ECU

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

STEERING LOCK SYSTEM - Steering Lock Motor Drive Power Circuit


DESCRIPTION

The main body ECU supplies the power to activate the motor of the steering lock actuator assembly.
The diagnosis information of the steering lock ECU is transmitted to the intelligent tester via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System.Steering Lock System Steering Lock Motor Drive Power Circuit


INSPECTION PROCEDURE

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.
NOTICE:
If the steering lock actuator assembly (steering lock ECU) is replaced, with the engine switch off and the shift lever in P (for A/T), open and close the driver side door to record the current lock position into the steering lock ECU. If this is not performed, the engine may not start.
1.CHECK VEHICLE CONDITION

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

    Result
    Result
    		Proceed to
    Steering lock cannot be released
    		A
    Steering lock cannot lock
    		B


B
Go to step 5
A


2.READ VALUE USING INTELLIGENT TESTER (LOCK/UNLOCK RECEIVE)

  1. Use the Data List to check if the steering lock command is functioning properly.

    Entry&Start
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Lock/Unlock Receive
    		Steering lock command reception record/YES or NO
    		YES: Steering lock/unlock signal received
    NO: Steering lock/unlock signal not received
    		-
OK:
YES is displayed on the intelligent tester screen.


NG
GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (HOW TO PROCEED WITH TROUBLESHOOTING) (Click here)
OK


3.INSPECT STEERING LOCK ECU
Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Immediately after turning the engine switch on (IG), measure the voltage between terminals E26-3 (IGE) and E26-1 (GND) of the steering lock ECU.

    Result
    Result
    		Proceed to
    11 to 14 V (measured voltage never becomes below 1 V)
    		A
    Below 1 V
    		B


B
GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (PROBLEM SYMPTOMS TABLE) (Click here)
A


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

Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Disconnect the E26 steering lock ECU connector.

  1. Disconnect the E1 main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E26-3 (IGE) - E1-19 (SLR+)
    		Always
    		Below 1 Ω
    E26-3 (IGE) or E1-19 (SLR+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU

5.INSPECT STEERING LOCK ECU
Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Move the shift lever to P (for A/T).

  1. Turn the engine switch off.

  1. Open the driver side door.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    E26-3 (IGE) - E26-1 (GND)
    		Steering lock motor operating
    		Below 1 V
    E26-3 (IGE) - E26-1 (GND)
    		Steering lock motor not operating
    		11 to 14 V


NG
Go to step 6
OK

GO TO ENTRY AND START SYSTEM (FOR START FUNCTION) (PROBLEM SYMPTOMS TABLE) (Click here)

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

Land Cruiser. Urj200, 202 Grj200 Vdj200.Steering Column.Power Tilt And Power Telescopic Steering Column System.Steering Lock System Steering Lock Motor Drive Power Circuit

  1. Disconnect the E26 steering lock ECU connector.

  1. Disconnect the E1 main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E26-3 (IGE) - E1-19 (SLR+)
    		Always
    		Below 1 Ω
    E26-3 (IGE) or E1-19 (SLR+) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU