Chrysler Town and Country 2003 Owner's Manual page 536

HEATING & A/C
A/C SWITCH FAULT (STORED) - MTC —
PCM COMMUNICATION FAILURE (STORED) - MTC
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module does not receive the
Fuel message from the PCM for more than 5 seconds.
POWER SWITCH FAULT (STORED) - MTC
When Monitored: With the ignition on.
Set Condition: This DTC will set if the Power switch stays closed for 10 minutes.
REAR BLEND OVERCURRENT (STORED) - MTC
When Monitored: When actuator movement is requested.
Set Condition: This DTC will set if the A/C - Heater Control Module detects an excessive
current draw on any of the door driver circuits while attempting to drive this actuator.
Only one overcurrent DTC can set per ignition cycle.
REAR BLEND POT CIRCUIT OPEN (STORED) - MTC
When Monitored: With the ignition on.
Set Condition: This DTC will set if the A/C - Heater Control Module sees voltage above
4.88 volts on the Rear Temperature Feedback Signal circuit.
REAR BLEND POT CIRCUIT SHORT (STORED) - MTC
When Monitored: When the ignition is on.
Set Condition: This DTC will set if the A/C - Heater Control Module sees voltage below
0.25 volts on the Rear Temperature Feedback Signal circuit.
REAR MODE OVERCURRENT (STORED) - MTC
When Monitored: When actuator movement is requested.
Set Condition: This DTC will set if the A/C - Heater Control Module detects an excessive
current draw on any of the door driver circuits while attempting to drive this actuator.
Only one overcurrent DTC can set per ignition cycle.
RECIRC OVERCURRENT (STORED) - MTC
When Monitored: When actuator movement is requested.
Set Condition: This DTC will set if the A/C - Heater Control Module detects an excessive
current draw on any of the door driver circuits while attempting to drive this actuator.
Only one overcurrent DTC can set per ignition cycle.
RECIRC SWITCH FAULT (STORED) - MTC
When Monitored: With the ignition on.
Set Condition: This DTC will set if the Recirc switch stays closed for 10 minutes.
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