1. | Test the radio remote switch. Is the radio remote switch OK? YES - Go to 2. NO - Replace the radio remote switch.n |
2. | Check the audio unit operation (volume up, volume down, CH (-), CH (+), MODE). Is the audio unit operation OK? YES - Go to 3. NO - Replace the audio unit.n |
3. | Remove the audio unit. |
4. | Measure the resistance between audio unit connector B (20P) No. 6 and No. 7 terminals as specified in the table.
Is resistance OK? YES - Go to 5. NO - Repair open or high resistance in the circuit between the audio unit and the radio remote switch. If the wires are OK, replace the cable reel.n |
5. | Check for continuity between the No. 6 and No. 7 terminals of audio unit connector B (20P) and body ground.
Is there continuity? YES - Repair short to body ground in the circuit between the audio unit and the radio remote switch. If the wires are OK, replace the cable reel.n NO - Replace the audio unit.n |