Inspection Procedure 1: Steering Wheel Audio Remote Control Switch does not Function.




TECHNICAL DESCRIPTION (COMMENT)


The power supply circuit to the steering wheel audio remote control switch, the steering wheel audio remote control switch, the radio with CD player, or the clock spring may be defective.

TROUBLESHOOTING HINTS



DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-248 steering wheel audio remote control switch connector


Q. Is the check result normal?

Go to Step 2.

Repair the defective connector.

STEP 2. Check the steering wheel audio remote control switch.
Check the steering wheel audio remote control switch (Refer to ).

Q. Is the check result normal?
Go to Step 3.
Replace the steering wheel audio remote control.

STEP 3. Connector check: B-244 and B-242 clock spring connector


Q. Is the check result normal?

Go to Step 4.

Repair the defective connector.

STEP 4. Check the clock spring.
Check whether the clock spring is in good condition. Refer to GROUP 52B - Driver’s, front passenger’s Air Bag Module(s) and Clock Spring .

Q. Is the check result normal?
Go to Step 5.
Replace the clock spring.

STEP 5. Connector check: B-14 radio with CD player connector


Q. Is the check result normal?

Go to Step 6.

Repair the defective connector.

STEP 6. Check the wiring harness between B-14 radio with CD player connector terminal No.25, 32 and B-242 clock spring connector terminal No.2, 3.





  • Check the communication lines for open and short circuit.

Q. Is the check result normal?

Go to Step 7.

Repair the wiring harness.

STEP 7. Connector check: B-248 steering wheel audio remote control switch connector


Q. Is the check result normal?

Go to Step 8.

Repair the defective connector.

STEP 8. Check the wiring harness between B-248 steering wheel audio remote control switch connector terminal No.2, 4 and B-244 clock spring connector terminal No.5, 4.



  • Check the communication lines for open and short circuit.

Q. Is the check result normal?


    Go to Step 9.

Repair the wiring harness.

STEP 9. Retest the system
Check whether you can operate the radio with CD player by using the steering wheel audio remote control switch.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the radio with CD player.