Circuit Description
WARNING: This page is about a different car, the 1998 Pontiac Bonneville, 1998 Oldsmobile Regency, 1998 Oldsmobile LSS, 1998 Oldsmobile Eighty-Eight, and 1998 Buick LeSabre. However, it is still accessible from the selected car via links, so may be relevant.
Output Driver Modules (ODM) are used by the PCM to turn on current-driven devices needed to control various engine and transaxle functions. Each ODM can control up to 7 output by supplying ground to the device PCM is commanding on. ODMs can diagnose each circuit individually. DTC will set when ODM detects an improper voltage level.
Conditions required to set DTC are:
- Ignition is on.
- An improper voltage level has been detected on output circuit controlling A/C compressor control relay.
- Condition is present longer than 30 seconds.