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Inspection Procedure 4: When the speech switch is pressed, the voice guide is not output.
 
 
cautionBefore replacing the hands free module or radio and CD player, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
If the voice guide is not sent when the steering wheel remote control switch (speech switch) is pushed, the communication between the radio and CD player and the hands free module, or the communication between the radio and CD player and the steering wheel remote control switch, the hands free module or the steering wheel remote control switch may have a problem.
 
 
 
TROUBLESHOOTING HINTS
  • The radio and CD player may be defective.
  • The hands free module may be defective.
  • The steering wheel remote control switch may be defective.
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
 
 
DIAGNOSIS
STEP 1. Check the diagnosis mode
Check if the hands free module can be switched to the diagnosis mode. (Refer to <Vehicles with 1CD audio> or <Vehicles with display audio>.)
Is the check result normal?
Go to Step 2
Perform Inspection Procedure 5 "DIAGNOSIS MODE cannot be made an entry." (Refer to .)
 
STEP 2. Operation check of the steering wheel remote control switch (audio remote control switch)
Check that the radio and CD player can be operated by the steering wheel remote control switch.
Is the check result normal?
Go to Step 3
Troubleshoot the steering wheel remote control switch.
 
STEP 3. Check the steering wheel remote control switch (speech switch).
Check the continuity of the steering wheel remote control switch. (Refer to .)
Is the check result normal?
Go to Step 4
Replace the steering wheel remote control switch.
 
STEP 4. Temporarily replace the hands free module, and check the trouble symptom.
Is the check result normal?
Replace the hands free module.
Replace the radio and CD player.