Pinpoint Test B : ACCM (Air Conditioning Control Module): Notes
Refer to Automatic Climate Control System for schematic and connector information.
Normal Operation and Fault Conditions
The ACCM requires an operating voltage between 9 and 16 volts. The ACCM receives this voltage from the BJB. The ACCM has a single ground circuit located in the engine compartment wiring harness. Excessive resistance or an open in one or more of these circuits, a discharged battery or an inoperative charging system results in the ACCM setting a DTC.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0562:00 | System Voltage Low: No Sub Type Information | If the ACCM detects low voltage system voltage drops below 8.5 volts, this DTC sets after 5 seconds and the A/C electric compressor motor is stopped. |
Possible Sources
- Fuse
- Wiring, terminals or connectors
- ACCM
Visual Inspection and Diagnostic Pre-checks
- Verify BJB fuse 29 (10A) is OK.