Component Testing
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Refer to SIR Caution
.
Disable the inflatable restraint steering wheel module when performing this diagnostic. Refer to SIR Disabling and Enabling .
IMPORTANT:
The cruise control switch must be ON in order to properly measure the resistance of the - SET, the + RES, and the Cancel switches.
- Ignition OFF, remove the inflatable restraint steering wheel module. Refer to Inflatable Restraint Steering Wheel Module Replacement .
- Disconnect the harness connector at the cruise control switch.
- Cruise control switch ON, measure the resistance between terminals 2 and 1 at the cruise control switch side of the connector. Individually activate and hold each cruise control function switch and compare the resistance reading to the values on the schematic for the ON/OFF, - SET, and the + RES.
- If any of the resistance measurements for the OFF, ON, - SET, and + RES are not within the listed resistance values, replace the cruise control switch assembly.
- Cruise control switch ON, measure the resistance between terminals 2 and 3 at the cruise control switch side of the connector. Activate and deactivate the cancel switch.
- If the resistance does not show continuity when activated and open when deactivated, replace the cruise control switch assembly.
Cruise Control Inoperative/Malfunctioning
| Function Switch | Minimum Resistance Value | Maximum Resistance Value |
|---|---|---|
| OFF | O.L. | O.L. |
| ON | 7.9k Ohms | 8.6k Ohms |
| - SET | 1.3k Ohms | 1.7k Ohms |
| + RES | 4.2k Ohms | 4.6k Ohms |
| Cancel | 0.0k Ohms | 0.5k Ohms |