Grand Caravan FWD V6-3.8L VIN L (2001)
the Rear Blower Front Control Switch in the Rear position results in the A/C - Heater Control Module sending a request to the FCM to provide
blower motor activation. Toggling the A/C - Heater Control Module's Power Switch off or rotating the Rear Blower Front Control Switch OFF of
the Rear position results in the A/C - Heater Control Module sending a request to the FCM to provide blower motor deactivation.
Blend Switch
The rotary Blend Switch controls the full range of temperature that the rear system can produce in any mode. Rotating the switch results in the A/C
- Heater Control Module signaling the actuator to move the blend door. A low temperature setting directs airflow to the overhead outlets, while a
high temperature setting directs airflow to the floor outlets. All door positions are determined relative to the number of commutator pulses required
to provide full travel of the door. On command, the A/C - Heater Control Module runs the actuator for the number of pulses corresponding to the
desired door position.
Active And Stored Trouble Codes
The A/C-Heater Control Module is capable of storing Active and Stored trouble codes. An active code indicates that a fault exists in the system. A
stored code indicates that a problem had occurred in the system, but is not currently present. Active codes cannot be erased until the problem
causing the code has been repaired. At this time the Active code is converted to a Stored code, which can be erased using the DRBIII(R).
