HVAC Module
NOTE:
Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart.
DTC INDEX
| DTC | Description | Action to Take |
|---|---|---|
| B1034:11 | Left Front Seat Heater Element: Circuit Short to Ground | REFER to SEATING . |
| B1034:13 | Left Front Seat Heater Element: Circuit Open | REFER to SEATING . |
| B1036:11 | Right Front Seat Heater Element: Circuit Short to Ground | REFER to SEATING . |
| B1036:13 | Right Front Seat Heater Element: Circuit Open | REFER to SEATING . |
| B1038:11 | Left Front Seat Heater Sensor: Circuit Short to Ground | REFER to SEATING . |
| B1038:12 | Left Front Seat Heater Sensor: Circuit Short to Battery | REFER to SEATING . |
| B103A:11 | Right Front Seat Heater Sensor: Circuit Short to Ground | REFER to SEATING . |
| B103A:12 | Right Front Seat Heater Sensor: Circuit Short to Battery | REFER to SEATING . |
| B1081:00 | Left Temperature Damper Motor: No Sub Type Information | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display which has 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B1081:07 | Left Temperature Damper Motor: Mechanical Failure | INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new Driver Side temperature blend door actuator. REFER to CLIMATE CONTROL |
| B1081:11 | Left Temperature Damper Motor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display which has 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B1081:12 | Left Temperature Damper Motor: Circuit Short to Battery | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display which has 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B1081:13 | Left Temperature Damper Motor: Circuit Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display which has 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B1082:00 | Right Temperature Damper Motor: No Sub Type Information | GO to PINPOINT TEST V . |
| B1082:07 | Right Temperature Damper Motor: Mechanical Failure | INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new Passenger Side temperature blend door actuator. REFER to CLIMATE CONTROL |
| B1082:11 | Right Temperature Damper Motor: Circuit Short to Ground | GO to PINPOINT TEST V . |
| B1082:12 | Right Temperature Damper Motor: Circuit Short to Battery | GO to PINPOINT TEST V . |
| B1082:13 | Right Temperature Damper Motor: Circuit Open | GO to PINPOINT TEST V . |
| B1083:00 | Recirculation Damper Motor: No Sub Type Information | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B1083:07 | Recirculation Damper Motor: Mechanical Failure | INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new air inlet door actuator. REFER to CLIMATE CONTROL |
| B1083:11 | Recirculation Damper Motor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B1083:12 | Recirculation Damper Motor: Circuit Short to Battery | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B1083:13 | Recirculation Damper Motor: Circuit Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B1086:00 | Air Distribution Damper Motor: No Sub Type Information | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B1086:07 | Air Distribution Damper Motor: Mechanical Failure | INSPECT for binding/damaged linkage or door. REPAIR as necessary. If no condition is found, INSTALL a new defrost/panel/floor door actuator. REFER to CLIMATE CONTROL |
| B1086:11 | Air Distribution Damper Motor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B1086:12 | Air Distribution Damper Motor: Circuit Short to Battery | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B1086:13 | Air Distribution Damper Motor: Circuit Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B10AF:11 | Blower Fan Relay: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST X
. For other systems, GO to PINPOINT TEST Z . |
| B10AF:12 | Blower Fan Relay: Circuit Short to Battery | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST W
. For other systems, GO to PINPOINT TEST Y . |
| B10AF:13 | Blower Fan Relay: Circuit Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST W
. For other systems, GO to PINPOINT TEST Y . |
| B10B8:00 | Push Buttons: No Sub Type Information | A button held too long can set DTC. ATTEMPT to clean buttons. CLEAR the DTCs. REPEAT the self-test. If code returns, INSTALL a new HVAC module. REFER to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE |
| B10B9:12 | Blower Control: Circuit Short to Battery | GO to PINPOINT TEST Z . |
| B10B9:14 | Blower Control: Circuit Short to Ground or Open | If the blower motor is inoperative, GO to PINPOINT TEST Y
. If the blower motor is always on HIGH, GO to PINPOINT TEST Z . |
| B11E5:11 | Left HVAC Damper Position Sensor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display with 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B11E5:15 | Left HVAC Damper Position Sensor: Circuit Short to Battery or Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST R
. For EMTC with 4.2 inch display with 7 blower motor speed positions, GO to PINPOINT TEST S . For Dual Zone EATC , GO to PINPOINT TEST U . |
| B11E6:11 | Right HVAC Damper Position Sensor: Circuit Short to Ground | GO to PINPOINT TEST V . |
| B11E6:15 | Right HVAC Damper Position Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST V . |
| B11E7:11 | Air Distribution Damper Position Sensor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B11E7:15 | Air Distribution Damper Position Sensor: Circuit Short to Battery or Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST L
. For other systems, GO to PINPOINT TEST M . |
| B11F0:11 | Air Intake Damper Position Sensor: Circuit Short to Ground | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B11F0:15 | Air Intake Damper Position Sensor: Circuit Short to Battery or Open | For EMTC
base with 4 blower motor speed positions, GO to PINPOINT TEST J
. For other systems, GO to PINPOINT TEST K . |
| B1A61:11 | Cabin Temperature Sensor: Circuit Short to Ground | GO to PINPOINT TEST D . |
| B1A61:15 | Cabin Temperature Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST D . |
| B1A63:11 | Right Solar Sensor: Circuit Short to Ground | GO to PINPOINT TEST F . |
| B1A63:15 | Right Solar Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST F . |
| B1A64:11 | Left Solar Sensor: Circuit Short to Ground | GO to PINPOINT TEST F . |
| B1A64:15 | Left Solar Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST F . |
| B1A69:11 | Humidity Sensor: Circuit Short to Ground | GO to PINPOINT TEST E . |
| B1A69:15 | Humidity Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST E . |
| B1B71:11 | Evaporator Temperature Sensor: Circuit Short to Ground | GO to PINPOINT TEST G . |
| B1B71:15 | Evaporator Temperature Sensor: Circuit Short to Battery or Open | GO to PINPOINT TEST G . |
| B1C83:11 | Rear Defog Relay: Circuit Short to Ground | REFER to REAR VIEW MIRRORS . |
| B1C83:13 | Rear Defog Relay: Circuit Open | REFER to REAR VIEW MIRRORS . |
| C1B14:11 | Sensor Supply Voltage A: Circuit Short to Ground | GO to PINPOINT TEST C . |
| C1B14:12 | Sensor Supply Voltage A: Circuit Short to Battery | GO to PINPOINT TEST C . |
| U0140:00 | Lost Communication With Body Control Module: No Sub Type Information | GO to PINPOINT TEST AA . |
| U0256:00 | Lost Communication With FCIM "A": No Sub Type Information | GO to PINPOINT TEST AC . |
| U0401:09 | Invalid Data Received From ECM/PCM A: Component Failure | This DTC can set due to a fault in the PCM. CARRY OUT a self-test of the PCM and DIAGNOSE any PCM DTCs present, REFER to ELECTRONIC ENGINE CONTROLS . |
| U0401:68 | Invalid Data Received From ECM/PCM A: Event Information | This DTC can set due to a fault in the PCM. CARRY OUT a self-test of the PCM and DIAGNOSE any PCM DTCs present, REFER to ELECTRONIC ENGINE CONTROLS . |
| U0401:81 | Invalid Data Received From ECM/PCM A: Invalid Serial Data Received | This DTC can set due to a fault in the PCM. CARRY OUT a self-test of the PCM and DIAGNOSE any PCM DTCs present, REFER to ELECTRONIC ENGINE CONTROLS . |
| U0401:82 | Invalid Data Received From ECM/PCM A: Alive/Sequence Counter Incorrect/Not Updated | This DTC can set due to a fault in the PCM. CARRY OUT a self-test of the PCM and DIAGNOSE any PCM DTCs present, REFER to ELECTRONIC ENGINE CONTROLS . |
| U0422:68 | Invalid Data Received From Body Control Module: Event Information | This DTC can set due to a fault in the BCM . CARRY OUT a self-test of the BCM and DIAGNOSE any BCM DTCs present, REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U0422:81 | Invalid Data Received From Body Control Module: Invalid Serial Data Received | This DTC can set due to a fault in the BCM . CARRY OUT a self-test of the BCM and DIAGNOSE any BCM DTCs present, REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U0423:82 | Invalid Data Received from Instrument Panel Cluster Control Module: Alive/Sequence Counter Incorrect/Not Updated | This DTC can set due to a fault in the IPC . CARRY OUT a self-test of the IPC and DIAGNOSE any IPC DTCs present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . |
| U0554:82 | Invalid Data Received From Accessory Protocol Interface Module: Alive/Sequence Counter Incorrect/Not Updated | This DTC can set due to a fault in the APIM . CARRY OUT a self-test of the APIM and DIAGNOSE any APIM DTCs present, Refer to the appropriate article for the procedure. |
| U1000:00 | Solid State Driver Protection Activated - Driver Disabled: | The HVAC module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The HVAC module cannot enable the output until the cause of the short is corrected. ADDRESS all other Diagnostic Trouble Codes (DTCs) first. After the cause of the concern is corrected, CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | CARRY OUT PMI on the HVAC module. REFER to MODULE CONFIGURATION . REPEAT the self-test. If PMI is successful, the DTC will not be present. If the DTC returns, INSTALL a new HVAC module. REFER to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE . |
| U3000:49 | Control Module: Internal Electronic Failure | ADDRESS all other DTCs first. CLEAR the DTCs. REPEAT the self-test. If DTC U3000:49 is retrieved again, INSTALL a new HVAC module. REFER to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE . |
| U3002:62 | Vehicle Identification Number: Signal Compare Failure | CARRY OUT PMI on the HVAC module. REFER to MODULE CONFIGURATION . REPEAT the self-test. If PMI is successful, the DTC will not be present. If the DTC returns, INSTALL a new HVAC module. REFER to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE . |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | GO to PINPOINT TEST H . |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | GO to PINPOINT TEST H . |
| All other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES . |