1. Audio control steering wheel switch inspection
1. Visual inspection
1) Inspect the audio control steering wheel switch for illumination when turning the lighting switch ON.
2. Resistance measurement
1) Measure the resistance between the connector terminals using a DMM when the audio control steering wheel switch is operated.
| Switch operation |
Terminal No. |
Resistance |
| Switch OFF |
1-9 1-10 |
24 kΩ |
| VOL + switch pressed and held |
1-10 |
1.1 kΩ |
| VOL - switch pressed and held |
2.9 kΩ |
|
| SEEK UP switch pressed and held |
5.3 kΩ |
|
| SEEK DOWN switch pressed and held |
9.2 kΩ |
|
| MODE switch pressed and held |
461 Ω |
|
| PHONE ON switch pressed and held |
1-9 |
9.2 kΩ |
| PHONE OFF switch pressed and held |
2.9 kΩ |
|
| VOICE switch pressed and held |
461 Ω |