STEERING COLUMN  STEERING LOCK SYSTEM  Unable to Lock Steering Wheel  


DESCRIPTION

The steering lock actuator assembly activates the steering lock motor and moves the lock bar into the steering column to lock the steering.

When the steering lock is operating, the steering may not lock when the lock bar is not aligned with the lock hole of the steering column. In this case, the steering can be locked by turning the steering wheel a little, as is done for a vehicle with a mechanical key, to change the position of the lock hole.

Related Data List and Active Test Items
Problem Symptom Data List Item Active Test Item
Unable to Lock Steering Wheel
Entry&Start
·

All items

Click here(Click here)


Main Body
·

FL Door Courtesy SW


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WIRING DIAGRAM

C285824E12
0.073,1.531 1.719,1.979 1.646,0.448 10 false ID Code Box (Immobiliser Code ECU) 0.052,3.594 1.719,4.042 1.667,0.448 10 false Main Body ECU (Multiplex Network Body ECU) 2.146,3.583 3.688,4.042 1.542,0.458 10 false Certification ECU (Smart Key ECU Assembly) 5.24,4.917 7.052,5.365 1.813,0.448 10 false Steering Lock ECU (Steering Lock Actuator Assembly) 2.156,3.417 2.469,3.615 0.313,0.198 10 false E49 3.031,2.708 3.604,2.906 0.573,0.198 10 false LIN 2.927,3.219 3.5,3.417 0.573,0.198 10 false SLR+ 0.865,0.823 1.438,1.021 0.573,0.198 10 false LIN1 1.26,0.667 1.833,0.865 0.573,0.198 10 false 2 3.375,2.542 3.948,2.74 0.573,0.198 10 false 17 3.365,3.104 3.938,3.302 0.573,0.198 10 false 29 5.156,2.542 5.729,2.74 0.573,0.198 10 false 5 5.156,3.094 5.729,3.292 0.573,0.198 10 false 3 5.156,4.021 5.729,4.219 0.573,0.198 10 false 1 5.375,2.708 5.948,2.906 0.573,0.198 10 false LIN 5.375,3.219 5.948,3.417 0.573,0.198 10 false IGE 5.365,4.156 5.938,4.354 0.573,0.198 10 false GND 5.24,4.75 5.813,4.948 0.573,0.198 10 false E51 0.073,1.375 0.646,1.573 0.573,0.198 10 false E28 0.74,5.083 2.729,5.479 1.99,0.396 10 false : LIN Communication Line 0.75,5.385 2.813,5.667 2.063,0.281 10 false : CAN Communication Line

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the engine switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

Perform either of the following operations to lock/unlock the steering:

·

To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG) with the shift lever in P (for CVT).

·

To lock the steering, turn the engine switch off with the shift lever in P (for CVT), and then open a door.


·

Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.

Click hereSteering>STEERING COLUMN>STEERING LOCK SYSTEM>DIAGNOSTIC TROUBLE CODE CHART

·

The steering lock system uses LIN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting.

Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING

·

When replacing the steering lock ECU (steering lock actuator assembly), certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU), registration must be performed (refer to Service Bulletin).

·

After performing repairs, confirm that the problem does not recur.

·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

When disconnecting the cable from the negative (-) battery terminal, some systems need to be initialized after the cable is reconnected.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>INITIALIZATION



PROCEDURE

1.CHECK DTC (ALL)
a.

Using the GTS, confirm the output of DTCs for all systems.

OK:

No DTCs are output.


NOTICE:
·

When using the GTS with the engine switch off, connect the GTS to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.

Click hereSteering>STEERING COLUMN>STEERING LOCK SYSTEM>DIAGNOSTIC TROUBLE CODE CHART




Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS (LOCK REQUEST RECEIVE)

NG

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

2.READ VALUE USING GTS (LOCK REQUEST RECEIVE)
a.

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

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Lock Request Receive Reception state of steering lock request signal by certification ECU (smart key ECU assembly) sent to ID code box (immobiliser code ECU)
HINT:
·

The reception state is maintained for 10 seconds.

·

When 10 seconds or more elapsed after receiving the signal, the item changes to "NG".



OK or NG OK: Within 10 seconds of opening any door with engine switch off and shift lever in P (for CVT)
NG: Except above 		If this item does not change to "OK" even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.
Body Electrical > Entry&Start > Data List
Tester Display
Lock Request Receive
50003 125 68
OK:

The certification ECU (smart key ECU assembly) receives a lock request signal within 10 seconds of turning the engine switch from on (IG) to off and opening a door with the shift lever in P (for CVT), and OK is displayed on the GTS screen.



Result:
Proceed to
OK
NG



OK

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

NG

5.READ VALUE USING GTS (FL DOOR COURTESY SW)
3.INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)
HINT:

Click hereSteering>STEERING COLUMN>STEERING LOCK SYSTEM>B2782


Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
HINT:

Click hereSteering>STEERING COLUMN>STEERING LOCK SYSTEM>B2782


Result:
Proceed to
OK
NG



OK

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.READ VALUE USING GTS (FL DOOR COURTESY SW)
a.

Using the GTS, check the following main body ECU (multiplex network body ECU) Data List item by opening and closing the driver door to confirm the state of the front door courtesy light switch assembly.

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
FL Door Courtesy SW Front door courtesy light switch assembly LH ON or OFF ON: Front door LH open
OFF: Front door LH closed 		If this item does not change according to the actual state of the driver door, there is a malfunction in the door courtesy light switch or a related part.
Body Electrical > Main Body > Data List
Tester Display
FL Door Courtesy SW
50003 123 199
OK:

The Data List item changes in accordance with the opening and closing of the driver door.



Result:
Proceed to
OK
NG



OK

6.READ VALUE USING GTS (S CODE CHECK)

NG

GO TO LIGHTING SYSTEM (FRONT DOOR COURTESY SWITCH CIRCUIT)

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>Front Door Courtesy Switch Circuit


6.READ VALUE USING GTS (S CODE CHECK)
a.

Use the Data List to check if S code certification is functioning properly.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When a malfunction is present:
·

The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
S Code Check
50003 125 65
OK:

OK is displayed on the GTS.


HINT:

Reasons for verification failure:

·

The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

There is a problem with the communication between ECUs.

·

An ECU is replaced, but is not registered.

·

An ECU is replaced with an ECU which has a code already stored in it.




Result:
Proceed to
OK
NG



OK

7.READ VALUE USING GTS (L CODE CHECK)

NG

10.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
7.READ VALUE USING GTS (L CODE CHECK)
a.

Use the Data List to check if L code certification is functioning properly.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator assembly) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When a malfunction is present:
·

The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
L Code Check
50003 125 66
OK:

OK is displayed on the GTS.


HINT:

Reasons for verification failure:

·

The steering lock ECU (steering lock actuator assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

There is a problem with the communication between ECUs.

·

An ECU is replaced, but is not registered.

·

An ECU is replaced with an ECU which has a code already stored in it.




Result:
Proceed to
OK
NG



OK

8.REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

NG

9.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
8.REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)
a.

Replace the steering lock ECU (steering lock actuator assembly) with a new one.

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


b.

Perform registration (refer to Service Bulletin).


c.

Turn the engine switch on (IG).


d.

Turn the steering wheel and check the steering condition.

OK:

Steering is unlocked.



Result:
Proceed to
OK
NG



OK

END

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

9.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
a.

Replace the ID code box (immobiliser code ECU) with a new one.


b.

Perform registration (refer to Service Bulletin).


c.

Use the Data List to check if L code certification is functioning properly.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator assembly) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When a malfunction is present:
·

The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator assembly) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
L Code Check
50003 125 66
OK:

OK is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

END

NG

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


10.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
a.

Replace the ID code box (immobiliser code ECU) with a new one.


b.

Perform registration (refer to Service Bulletin).


c.

Use the Data List to check if S code certification is functioning properly.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
S Code Check Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When a malfunction is present:
·

The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
S Code Check
50003 125 65
OK:

OK is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

END

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)