Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX
| DTC | EATC (Hard) Self-Test Faults | EATC (Intermittent) Run-Time Faults | Description | Action to Take |
|---|---|---|---|---|
| B1249 | 024 | 025 | Blend door short or failure | GO to PINPOINT TEST A . |
| B1251 | 031 | N/A | In-car temperature sensor open circuit | GO to PINPOINT TEST B . |
| B1253 | 030 | N/A | In-car temperature sensor short to ground | GO to PINPOINT TEST B . |
| B1255 | 041 | 043 | Ambient temperature sensor open circuit | GO to PINPOINT TEST C . |
| B1257 | 040 | 042 | Ambient temperature sensor short to ground | GO to PINPOINT TEST C . |
| B1260 | 053 | 051 | A/C solar radiation sensor open circuit | GO to PINPOINT TEST D . |
| B1261 | 050 | 052 | Solar radiation sensor circuit short to ground | GO to PINPOINT TEST D . |
| U1073 | N/A | N/A | SCP invalid or missing data for engine coolant | If DTCs are present in the instrument cluster, diagnose those codes first. Clear the DTCs. If the EATC DTC returns, INSTALL a new EATC module. Refer to AIR DISTRIBUTION AND FILTERING . TEST the system for normal operation. If no DTCs are present in the instrument cluster, clear the DTCs. If the EATC DTC returns, INSTALL a new EATC module. Refer to AIR DISTRIBUTION AND FILTERING . TEST the system for normal operation. |
| U1341 | N/A | N/A | SCP invalid or missing data for function read vehicle speed | If DTCs are present in the instrument cluster, diagnose those codes first. Clear the DTCs. If the EATC DTC returns, INSTALL a new EATC module. Refer to AIR DISTRIBUTION AND FILTERING . TEST the system for normal operation. If no DTCs are present in the instrument cluster, clear the DTCs. If the EATC DTC returns, INSTALL a new EATC module. Refer to AIR DISTRIBUTION AND FILTERING . TEST the system for normal operation. |