The steering wheel controls are simple momentary contact switches that connect a series of resistors so that each switch selection corresponds to a fixed resistance value. The dash integration module (DIM) determines which switch has been pressed by the voltage drop across the corresponding resistance value.
This diagnostic procedure supports the following DTC:
B2810 Steering Wheel Controls Entertainment Circuit
This test is run every 300 milliseconds.
The switch must be stuck, pressed, for at least 30 seconds.
The DIM will ignore the switch command.
The stuck switch condition must be corrected.
• | The following may cause an intermittent: |
- | A bent terminal |
- | A backed out terminal |
- | A damaged terminal |
- | Poor terminal tension |
- | A chafed wire |
- | A broken wire inside the insulation |
• | When diagnosing for an intermittent short or an open, massage the wire harness while watching the test equipment for changes. |
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
Schematic Reference: Steering Wheel Controls Schematics Connector End Views Reference: Entertainment Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Does the Steering Wheel Controls parameter indicate the specified range? | 0-7 Counts | Go to Diagnostic Aids | Go to Step 3 | |
3 | Replace the steering wheel control switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 4 | -- |
4 |
Does the DTC reset? | -- | Go to Step 2 | System OK |