Diagnostic Procedure
- Each steering wheel control switch has a unique resistance. These resistance values can be measured by disconnecting connector C202, located under instrument panel near base of steering column. Using a DVOM, measure resistance between terminals A1 (Dark Blue wire) and A4 (Orange wire) of connector C202, while operating steering wheel touch controls. See Figure .
- Check count display for each key to be within range. If readings are not as specified, replace steering wheel touch controls. See STEERING WHEEL TOUCH CONTROL RESISTANCE . Keys are labeled according to installed options.
STEERING WHEEL TOUCH CONTROL RESISTANCE
| Function | Count Range | Resistance (Ohms) |
|---|---|---|
| Volume Up | 212-240 | 1270 |
| Volume Down | 181-202 | 1564 |
| Select Up | 153-172 | 1912 |
| Select Down | 126-145 | 2387 |
| Phone/Temp Up | 90-117 | 3102 |
| Recall/Temp Down | 73-91 | 4282 |
| Send/Fan Up | 45-63 | 6652 |
| End/Fan Down | 19-37 | 13632 |
| No Key Pressed | 0-18 | 0 |