Mtc - Chrysler Town and Country 2003 Owner's Manual

Symptom:
*REAR BLOWER REAR CONTROL SWITCH INOP IN ONE OR
MORE SPEEDS - MTC
REAR BLOWER MOTOR DRIVER CIRCUIT(S) OPEN
REAR BLOWER REAR CONTROL SWITCH
REAR BLOWER MOTOR FRONT CONTROL FEED CIRCUIT OPEN
A/C - HEATER CONTROL MODULE
TEST
1 Turn the ignition off.
Disconnect the Rear Blower Rear Control Switch C1 harness connector.
Turn the ignition on.
Turn the Power switch on the A/C - Heater Control Module on.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Using a 12-volt test light connected to ground, back probe each of the Rear Blower
Motor Driver circuits (Low, Medium, and High).
Does the test light illuminate brightly on each circuit?
Yes → Go To 2
→ Repair all Rear Blower Motor Driver circuits that failed to
No
2 Turn the Power switch on the A/C - Heater Control Module off.
Turn the ignition off.
Make sure that the Rear Blower Rear Control C1 harness connector is connected to
the Rear Blower Rear Control Switch.
Using a jumper wire connected to ground, back probe the Rear Blower Motor Front
Control Feed circuit in the Rear Blower Rear Control Switch C1 harness connector.
Turn the ignition on.
Turn the Power switch on the A/C - Heater Control Module on.
Turn the Blower switch on the Rear Blower Rear Control Switch to each speed
position.
Does the rear blower run in all speeds?
Yes → Go To 3
→ Replace the Rear Blower Rear Control Switch in accordance with
No
POSSIBLE CAUSES
ACTION
illuminate the test light brightly for an open.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
587
HEATING & A/C
APPLICABILITY
All
All