Electronic Automatic Temperature Control (EATC) Module
A/C-HEATER SYSTEMS DIAGNOSTIC TROUBLE CODE (DTC) LIST (EATC)
| DTC | EATC (Hard) Self-Test Faults | EATC (Intermittent) Run-Time Faults | Description | Test |
|---|---|---|---|---|
| B1249 | 024 | 022 | Blend door failure or short | GO to PINPOINT TEST A . |
| B1251 | 031 | N/A | A/C in-car temperature sensor (19D888) open circuit | GO to PINPOINT TEST B . |
| B1253 | 030 | N/A | A/C in-car temperature sensor (19D888) short to ground | GO to PINPOINT TEST B . |
| B1255 | 041 | 043 | A/C ambient temperature (19E702) sensor open circuit | GO to PINPOINT TEST C . |
| B1257 | 040 | 042 | A/C ambient temperature sensor (19E702) short to ground | GO to PINPOINT TEST C . |
| B1261 | 050 | 052 | A/C solar radiation sensor (19E663) circuit short to ground | GO to PINPOINT TEST D . |
| U1073 | N/A | - | Standard Corporate Protocol (SCP) invalid or missing data for engine coolant | Refer to appropriate SELF-DIAGNOSTICS DTCS table. |
| U1341 | N/A | N/A | Standard Corporate Protocol (SCP) invalid data for vehicle speed | Refer to appropriate SELF-DIAGNOSTICS DTCS table. |