B10A2 - Left Blend Door Control Circuit/Performance: Notes
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS information.
Theory of Operation
The A/C heater control monitors the door driver circuits during actuator operation for shorts to ground, shorts to battery, and shorts to other door driver circuits. If detected, the A/C heater control reports these types of faults as control circuit/performance DTCs.
- >>When Monitored:<< When actuator movement is requested.
- >>Set Condition:<< If the A/C heater control detects a short to ground or to voltage on the recirculation door driver, the passenger blend door driver, the driver blend door driver, the mode door driver, or the common door driver 2 circuits while attempting to drive the recirculation door driver.
| Possible Causes |
|---|
| RECIRCULATION DOOR DRIVER CIRCUIT C32 SHORTED TO VOLTAGE |
| PASSENGER BLEND DOOR DRIVER CIRCUIT C33 SHORTED TO VOLTAGE |
| DRIVER BLEND DOOR DRIVER CIRCUIT C61 SHORTED TO VOLTAGE |
| MODE DOOR DRIVER CIRCUIT C35 SHORTED TO VOLTAGE |
| COMMON DOOR DRIVER 2 CIRCUIT C807 SHORTED TO VOLTAGE |
| RECIRCULATION DOOR DRIVER CIRCUIT C32 SHORTED TO GROUND |
| PASSENGER BLEND DOOR DRIVER CIRCUIT C33 SHORTED TO GROUND |
| MODE DOOR DRIVER CIRCUIT C35 SHORTED TO GROUND |
| COMMON DOOR DRIVER 2 CIRCUIT C807 SHORTED TO GROUND |
| RECIRCULATION DOOR DRIVER CIRCUIT C32 SHORTED TO OTHER DOOR DRIVER CIRCUITS |
| PASSENGER BLEND DOOR DRIVER CIRCUIT C33 SHORTED TO OTHER DOOR DRIVER CIRCUITS |
| DRIVER BLEND DOOR DRIVER CIRCUIT C61 SHORTED TO OTHER DOOR DRIVER CIRCUITS |
| MODE DOOR DRIVER CIRCUIT C35 SHORTED TO OTHER DOOR DRIVER CIRCUITS |
| COMMON DOOR DRIVER 2 CIRCUIT C807 SHORTED TO OTHER DOOR DRIVER CIRCUITS |
| RECIRCULATION DOOR ACTUATOR |
| MODE DOOR ACTUATOR |
| PASSENGER BLEND DOOR ACTUATOR |
| A/C HEATER CONTROL |
NOTE:
The DTC must be active for the results of this test to be valid. Do not perform this test if the DTC is stored. for stored DTC test procedures.