Unable to Lock Steering Wheel [08/2013 - ]: Procedure

1. Using the Techstream, confirm the output of DTCs for all systems.

   OK

   No DTCs are output.

   NOTE:

   • When using the Techstream with the engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
   • Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.

     Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - 08/2015] Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2015 - ]

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

Result:  1

OK 

See step  2

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

   Body Electrical > Smart Key > 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 (immobilizer 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 > Smart Key > Data List 

   Tester Display
   Lock Request Receive

   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 Techstream screen.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

See step  5

Result:  1

OK 

See step  3

HINT: 

See step  1 See step  1

Result

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  1

OK 

See step  4

HINT: 

See step  4 See step  4

Result

Result:  1

OK 

REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to  DISASSEMBLY [08/2013 - ] 

Result:  2

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Using the Techstream, 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

   OK

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

   Result

   Proceed to
   OK
   NG

Result:  3

NG 

GO TO LIGHTING SYSTEM (FRONT DOOR COURTESY SWITCH CIRCUIT):  Front Door Courtesy Switch Circuit [08/2013 - ] 

Result:  1

OK 

See step  6

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

   Body Electrical > Smart Key > 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started).

   Body Electrical > Smart Key > Data List 

   Tester Display
   S Code Check

   OK

   OK is displayed on the Techstream.

   HINT: 

   Reasons for verification failure:

   • The certification ECU (smart key ECU assembly) or ID code box (immobilizer 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

Result:  2

NG 

See step  10

Result:  1

OK 

See step  7

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

   Body Electrical > Smart Key > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   L Code Check	Verification result between ID code box (immobilizer 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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer 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 > Smart Key > Data List 

   Tester Display
   L Code Check

   OK

   OK is displayed on the Techstream.

   HINT: 

   Reasons for verification failure:

   • The steering lock ECU (steering lock actuator assembly) or ID code box (immobilizer 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

Result:  2

NG 

See step  9

Result:  1

OK 

See step  8

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

   Refer to DISASSEMBLY [08/2013 - ]

2. Perform registration.

   Refer to REGISTRATION [08/2013 - ]

3. Turn the engine switch on (IG).
4. Turn the steering wheel and check the steering condition.

   OK

   Steering is unlocked.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

END 

Result:  2

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2013 - ] 

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

   Refer to REMOVAL [08/2013 - ]

2. Perform registration.

   Refer to REGISTRATION [08/2013 - ]

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

   Body Electrical > Smart Key > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   L Code Check	Verification result between ID code box (immobilizer 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 (immobilizer code ECU) or steering lock ECU (steering lock actuator assembly) is not registered or the ID code box (immobilizer 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 > Smart Key > Data List 

   Tester Display
   L Code Check

   OK

   OK is displayed on the Techstream.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

END 

Result:  2

NG 

REPLACE STEERING LOCK ACTUATOR ASSEMBLY. Refer to  DISASSEMBLY [08/2013 - ] 

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

   Refer to REMOVAL [08/2013 - ]

2. Perform registration.

   Refer to REGISTRATION [08/2013 - ]

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

   Body Electrical > Smart Key > 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 (immobilizer 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 (immobilizer code ECU) is not registered or the certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU) is malfunctioning. The steering cannot be locked. The steering cannot be unlocked (the engine cannot be started).

   Body Electrical > Smart Key > Data List 

   Tester Display
   S Code Check

   OK

   OK is displayed on the Techstream.

   Result

   Proceed to
   OK
   NG

Result:  1

OK 

END 

Result:  2

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2013 - ]