HVAC Module DTC Chart
NOTE:
For hybrid only, the HVAC module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. CMDTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.
HVAC MODULE DTC CHART
| DTC | Description | Action |
|---|---|---|
| B12BE | Heated Backlight/Mirror Relay Drive Circuit Shorted to Battery Voltage | GO to PINPOINT TEST F . |
| B12BF | Heated Backlight/Mirror Relay Drive Circuit Open or Shorted to Ground | If the rear window does not defrost, GO to PINPOINT TEST F . If the rear window defrost does not turn off, GO to PINPOINT TEST G . |
| B1C83:12 | Rear Defog Relay: Circuit Short to Battery | GO to PINPOINT TEST F . |
| B1C83:14 | Rear Defog Relay: Circuit Short to Ground or Open | If the rear window does not defrost, GO to PINPOINT TEST F . If the rear window defrost does not turn OFF, GO to PINPOINT TEST G . |
| All other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULE article. |