Diagnostic Aids
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
The following are possible causes of the malfunction:
- A short between the I/P module high and low circuits.
- An open or a high resistance in the I/P module high or low circuits.
- A short to ground or a short to voltage in the I/P module high or low circuits.
- The I/P module connector
- The SDM connector
- A malfunctioning I/P module
- A malfunctioning SDM