A/C Heater Systems - Manual DTCS
INSTRUMENT CLUSTER MODULE (ICM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action/Go to |
|---|---|---|---|
| B1249 | Blend Door Failure | ICM | PINPOINT TEST P |
| B1676 | Battery Voltage Out of Range | ICM | PINPOINT TEST A |
| B2175 | A/C Request Signal Circuit Short to Ground | ICM | PINPOINT TEST F |
| C1779 | Blower Switch Failure | ICM | PINPOINT TEST I |
| U1131 | SCP (J1850) Invalid or Missing Data for Fuel System | REM | PINPOINT TEST D |
FRONT ELECTRONIC MODULE (FEM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action/Go to |
|---|---|---|---|
| B2510 | Main Blower Motor Relay Circuit Short to Battery | FEM | PINPOINT TEST I |
| U1178 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | ICM | CARRY OUT the IC self-test. |
| U1262 | SCP (J1850) Communication Bus Fault | - | REFER to MODULE COMMUNICATIONS NETWORK |
REAR ELECTRONIC MODULE (REM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action/Go to |
|---|---|---|---|
| B2539 | Aux A/C Mode Position Reference Circuit Short to Ground (Invalid) | REM | PINPOINT TEST O |
| B2540 | Aux A/C Mode Position Reference Circuit Short to Battery | REM | PINPOINT TEST O |
| B2543 | Aux A/C Control Switch Reference Circuit Short to Ground (Invalid) | REM | PINPOINT TEST R |
| B2544 | Aux A/C Control Switch Reference Circuit Short to Battery | REM | PINPOINT TEST R |
| B2559 | Aux A/C Blower Motor Relay Circuit Short to Battery | REM | PINPOINT TEST M |
| B2560 | Aux A/C Blower Motor Relay Circuit Short to Ground | REM | PINPOINT TEST M |
| B2561 | Aux A/C Blower Speed 1 Circuit Failure | REM | PINPOINT TEST M |
| B2562 | Aux A/C Blower Speed 1 Circuit Short to Ground | REM | PINPOINT TEST M |
| B2563 | Aux A/C Blower Speed 2 Circuit Failure | REM | PINPOINT TEST M |
| B2564 | Aux A/C Blower Speed 2 Circuit Short to Ground | REM | PINPOINT TEST M |
| U1178 | SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) | ICM | CARRY OUT the IC selftest. |
| U1262 | SCP (J1850) Communication Bus Fault | - | REFER to MODULE COMMUNICATIONS NETWORK . |