Electronic Manual Temperature Control (EMTC)
ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action To Take |
|---|---|---|
| B1200 | Stuck Button | Button held too long may set DTC. ATTEMPT to clean buttons. If code returns, INSTALL a new dual automatic temperature control (DATC) module. See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B1251 | Air Temperature Internal Sensor Circuit Open | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B1253 | Air Temperature Internal Sensor Circuit Short to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B1255 | Air Temperature External Sensor Circuit Open | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B1257 | Air Temperature External Sensor Circuit Short to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B129B | Driver Blend Door Actuator, Drive Circuit(s) Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B129C | Driver Blend Door Actuator, Feedback Circuit Open or Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B129D | Driver Blend Door Actuator, Feedback Circuit Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B129F | Passenger Blend Door Actuator, Drive Circuit(s) Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12A0 | Passenger Blend Door Actuator, Feedback Circuit Open or Shorted to Battery Voltage | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A1 | Passenger Blend Door Actuator, Feedback Circuit Shorted to Ground | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A2 | Passenger Blend Door Actuator, Slow or Door Obstructed | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A4 | Mode Door Actuator, Drive Circuit(s) Shorted to Battery Voltage | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A5 | Mode Door Actuator, Feedback Circuit Open or Shorted to Battery Voltage | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A6 | Mode Door Actuator, Feedback Circuit Shorted to Ground | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A7 | Mode Door Actuator, Slow or Door Obstructed | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12A9 | Recirc Door Actuator, Drive Circuit(s) Shorted to Battery Voltage | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B12AF | Front Blower Motor Relay Drive Circuit Shorted to Battery Voltage | For EMTC module systems, see PINPOINT TEST 7: THE BLOWER MOTOR IS INOPERATIVE - MANUAL CLIMATE CONTROL MODULE . |
| B12B0 | Front Blower Motor Relay Drive Circuit Open or Shorted to Ground | For EMTC module systems, if the blower motor is inoperative, see PINPOINT TEST 7: THE BLOWER MOTOR IS INOPERATIVE - MANUAL CLIMATE CONTROL MODULE
. For EMTC module systems, if the blower motor is always on, REPAIR circuit (V/G) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. |
| B12B1 | Front Blower Motor PWM Drive Circuit Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B2 | Front Blower Motor PWM Drive Circuit Open or Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B3 | Blend Door Actuator, Drive Circuit(s) Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B5 | Blend Door Actuator, Feedback Circuit Open or Shorted to Battery Voltage | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B6 | Blend Door Actuator, Feedback Circuit Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B7 | Blend Door Actuator, Slow or Door Obstructed | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B8 | Blend Door Actuator, Slow or Door Obstructed | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B12B9 | Vref (5V) Drive Circuit Shorted to Battery Voltage | REPAIR circuit (BR/W) for a short to voltage. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. |
| B12BA | Vref (5V) Drive Circuit Shorted to Ground | REPAIR circuit (BR/W) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. |
| B1342 | Vref (5V) Drive Circuit Shorted to Ground | REPAIR circuit (BR/W) for a short to ground, CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. |
| B1676 | Battery Voltage Out of Range | See PINPOINT TEST 9: DTC B1676 - BATTERY VOLTAGE OUT OF RANGE . |
| B2426 | Battery Voltage Out of Range | See PINPOINT TEST 9: DTC B1676 - BATTERY VOLTAGE OUT OF RANGE . |
| B2427 | Battery Voltage Out of Range | See PINPOINT TEST 9: DTC B1676 - BATTERY VOLTAGE OUT OF RANGE . |
| B2477 | Module Configuration Failure | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| B2795 | Module Configuration Failure | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| B2796 | Module Configuration Failure | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| B2826 | Module Configuration Failure | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| B2827 | Module Configuration Failure | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| B297A | Blend Door Actuator, Drive Circuit(s) Open | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B297B | Blend Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B297C | Blend Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B297D | Blend Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 8: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B297E | Blend Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B297F | Blend Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |
| B298A | Mode Door Actuator, Drive Circuit(s) Open | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B298B | Mode Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 2: INCORRECT/ERRATIC DIRECTION OF AIRFLOW FROM OUTLETS . |
| B298C | Recirc Door Actuator. | See PINPOINT TEST 1: THE AIR INLET DOOR IS INOPERATIVE . |
| B298D | Recirc Door Actuator, Drive Circuit(s) Shorted to Ground | See PINPOINT TEST 1: THE AIR INLET DOOR IS INOPERATIVE . |
| U0140 | Lost Communication With Body Control Module (GEM) | CLEAR The DTCs. REPEAT the self-test. If the DTC returns, see COMMUNICATIONS NETWORK - TROUBLESHOOTING to diagnose the lost communication with the GEM. |
| U0300 | Internal Control Module Software Incompatibility | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| U2050 | No Application Present | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| U2051 | One or More Calibration Files Missing / Corrupt | INSTALL a new EMTC module. See CLIMATE CONTROL MODULE REMOVAL/INSTALLATION . |
| All Other DTCs | - | See PINPOINT TEST 6: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY . |