Steering Lock System Unable To Lock Steering Wheel

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC (CERTIFICATION ECU)

CHECK DTC (MAIN BODY ECU)

READ VALUE USING DATA LIST (CERTIFICATION ECU)

CHECK STEERING LOCK ACTUATOR

CHECK STEERING LOCK FUNCTION

READ VALUE USING INTELLIGENT TESTER (CERTIFICATION ECU)

CHECK OPERATION OF ID CODE BOX

READ VALUE USING INTELLIGENT TESTER (CERTIFICATION ECU)

CHECK OPERATION OF ID CODE BOX

CHECK OPERATION OF STEERING LOCK ACTUATOR

WIRING DIAGRAM

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 step to wake up the ECU:

Before starting the inspection, 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. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

3. Read the DTCs of the certification ECU by following the prompts displayed on the intelligent tester.
   

   OK:

   No DTCs related to the main body ECU are output.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

3. Read the DTCs of the main body ECU by following the prompts displayed on the intelligent tester.
   

   OK:

   No DTCs related to the main body ECU are output.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

3. Within 10 seconds after the engine is started, read the Data List menu of the certification ECU, and check the steering lock command reception record.
   
   

   Certification ECU

   Item	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.
   

1. Turn the engine switch on (IG).
   

2. Turn the engine switch off.
   

3. With the shift lever on P*, immediately after opening the driver door, inspect the voltage between terminals E6-3 (IGE) and E6-2 (SGND) of the steering lock actuator.
   *: except M/T
   

   Result

   Result	Proceed to
   Immediately after opening door, condition that measurement is 1 V or less occurs	A
   Measurement is 11 to 14 V, and measurement never becomes 1 V or less	B

1. Open the front passenger side door.
   

2. Lock the doors using the wireless remote door lock key.
   

3. Check that no doors are locked and the steering lock does not operate.
   

   OK:

   No doors are locked and steering lock is not locked.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

3. Check the Data List and read the value displayed on the intelligent tester.
   
   

   Certification ECU

   Item	Measurement Item / Range	Normal Condition	Diagnostic Note
   S Code Check	S code match record / NG or OK	NG: S code not matched OK: S code matched	-

   OK:

   OK is displayed on the intelligent tester screen.
   

1. Replace the ID code box with a normally functioning or new one.
   

2. Connect the intelligent tester to the DLC3.
   

3. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

4. Check the Data List and read the value displayed on the intelligent tester.
   
   

   Certification ECU

   Item	Measurement Item / Range	Normal Condition	Diagnostic Note
   S Code Check	S code match record / NG or OK	NG: S code not matched OK: S code matched	-

   OK:

   OK is displayed on the intelligent tester screen.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

3. Check the Data List and read the value displayed on the intelligent tester.
   
   

   Certification ECU

   Item	Measurement Item / Range	Normal Condition	Diagnostic Note
   L Code Check	L code match record / NG or OK	NG: L code not matched OK: L code matched	-

   OK:

   OK is displayed on the intelligent tester screen.
   

1. Replace the ID code box with a normally functioning or new one.
   

2. Connect the intelligent tester to the DLC3.
   

3. Turn the engine switch on (IG) and press the intelligent tester main switch ON.
   

4. Check the Data List and read the value displayed on the intelligent tester.
   
   

   Certification ECU

   Item	Measurement Item / Range	Normal Condition	Diagnostic Note
   L Code Check	L code match record / NG or OK	NG: L code not matched OK: L code matched	-

   OK:

   OK is displayed on the intelligent tester screen.
   

1. Replace the steering lock actuator assembly with a normally functioning or new one.
   

2. except M/T:
   

   1. With the shift lever on P and the brake pedal depressed, turn the engine switch on (IG).
      

3. for M/T:
   

   1. With the clutch pedal depressed, turn the engine switch on (IG).
      

4. Check whether the steering lock can be released by turning the steering wheel, and check that the engine starts.
   

   OK:

   Steering lock is released and engine starts.