Trouble Codes From The MTC Head
WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, and 2002 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
The trouble codes can be checked with the MTC head and the odometer display of the mechanical instrument cluster if a DRBIIII(R) scan tool is not available. The MTC head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC to the following settings, see Fig 1 .
- The engine must be running with vehicle not moving.
- The fan speed set to any speed except OFF.
- The temperature knob in full cold (full counterclockwise position).
- The mode knob must be placed in defrost position (full clockwise position).
- The A/C button can be on or off.
- Press and hold the EBL button until the mechanical instrument cluster odometer display indicates an "AC00". The body control module (BCM) will chime once and the MTC A/C button LED will begin blinking.
- Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control unit door calibration is complete.
IDENTIFYING DIAGNOSTIC TROUBLE CODES
| DTC | Fault | ||||
|---|---|---|---|---|---|
| 23 (1) |
Blend Air Door Actuator Feedback Failure | ||||
| 24 (1) |
Mode Door Actuator Feedback Failure | ||||
| 25 (1) |
Ambient Sensor | ||||
| 31 (1) |
Recirculation Door Actuator Stall Failure | ||||
| 32 (1) |
Blend Air Door Actuator Stall Failure | ||||
| 33 (1) |
Mode Door Actuator Stall Failure | ||||
| 35 (1) |
Evaporator Sensor Failure | ||||
| 37 (1) |
Blend Air Door Actuator Output Shorted To Battery | ||||
| 38 (1) |
Blend Air Door Actuator Output Shorted To Ground | ||||
| 39 (1) |
Mode Door Actuator Output Shorted To Battery | ||||
| 40 (1) |
Mode Door Actuator Output Shorted To Ground | ||||
| 41 (1) |
Recirculation Door Actuator Output Shorted To Battery | ||||
| 42 (1) |
Recirculation Door Actuator Output Shorted To Ground | ||||
| 43 (1) |
Common Door Actuator Output Shorted To Battery | ||||
| 44 (1) |
Common Door Actuator Output Shorted To Ground | ||||
| 45 (1) |
A/C Control Blend Door Input Open Or Shorted To Ground | ||||
| 46 (1) |
A/C Control Blend Door Shorted To Battery | ||||
| 47 (1) |
A/C Control A/C Switch Failure | ||||
| 48 (1) |
A/C Control Mode Door Input Shorted To Ground | ||||
| 49 (1) |
A/C Control Mode Door Input Shorted To Battery | ||||
| 50 (1) |
A/C Control Electric Backlight (EBL) Switch Failure | ||||
| 51 (1) |
System Voltage Too Low For Door Calibration | ||||
| (2) | A/C Control A/C Switch Failure | ||||
| (2) | A/C Control Blend Door Input Open Or Shorted to Ground | ||||
| (2) | A/C Control Blend Door Input Shorted To Battery | ||||
| (2) | A/C Control EBL Switch Failure | ||||
| (2) | A/C Control Mode Door Input Open Or Shorted To Battery | ||||
| (2) | A/C Mode Control Door Input Shorted To Ground | ||||
| (2) | Blend Door Feedback Failure | ||||
| (2) | Blend Door Output Shorts To Battery | ||||
| (2) | Blend Door Output Shorted To Ground | ||||
| (2) | Blend Door Stall Test Failure | ||||
| (2) | Common output Shorted to Battery | ||||
| (2) | Common Output Shorted To Ground | ||||
| (2) | Evaporator Temperature Sensor Failure | ||||
| (2) | Head Status RX Failure | ||||
| (2) | Mode Door Feedback Failure | ||||
| (2) | Mode Door Output Shorted To Battery | ||||
| (2) | Mode Door Output Shorted To ground | ||||
| (2) | Mode Door Stall Test Failure | ||||
| (2) | RECIRC Door Output Shorted To Battery | ||||
| (2) | RECIRC Door Output Shorted To Ground | ||||
| (2) | Recirculation Door Test Failure (Inoperative Or Stall) | ||||
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