Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Turn Signal Multifunction Switch
- Ignition OFF, disconnect the X1 harness connector at the turn signal multifunction switch.
- With the wiper switch in the HIGH position, test for less than 2 ohms between the low reference terminal M and the signal terminal K.
- If greater than the specified range, replace the windshield wiper washer switch.
- While cycling the wiper switch through each delay and speed position, test for the specified resistance between the low reference terminal M and the signal terminal N.
IMPORTANT:
If the switch tests open in any switch position other than Off, test the signal circuits for a short to voltage before replacing the switch.
Wiper Switch Values
| Switch Position | Resistance |
|---|---|
| Off | Infinite |
| Mist | 300-364 Ω |
| Delay 1 | 3.48k-4.25k Ω |
| Delay 2 | 2.52k-3.08k Ω |
| Delay 3 | 1.78k-2.18k Ω |
| Delay 4 | 1.17k-1.44k Ω |
| Delay 5 | 697-851 Ω |
| Low | 300-364 Ω |
| High | 300-364 Ω |
- If any switch position is not within the specified range, replace the turn signal multifunction switch.