Chrysler Town and Country 2003 Owner's Manual page 605

*REAR BLOWER MOTOR INOPERATIVE - MTC —
TEST
7 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 the Fused Rear Blower
Motor Relay Output circuit in the Rear Blower Motor 2-pin harness connector.
Does the test light illuminate brightly?
Yes → Go To 8
→ Go To 11
No
8 Turn the Power switch on the A/C - Heater Control Module off.
Turn the ignition off.
Using a jumper wire connected to ground, back probe the DB/OR wire in the Rear
Blower Motor 2-pin harness connector.
Turn the ignition on.
Turn the Power switch on the A/C - Heater Control Module on.
Does the blower motor run at high speed?
Yes → Go To 9
→ Replace the Rear Blower Motor in accordance with the Service
No
9 Turn the ignition off.
Disconnect the Rear Blower Motor 2-pin harness connector.
Disconnect the Rear Blower Motor Resistor Block harness connector.
Measure the resistance of the DB/OR wire between the Rear Blower Motor 2-pin
harness connector and the Rear Blower Motor Resistor Block harness connector.
Is the resistance below 5 ohms?
Yes → Go To 10
→ Repair the DB/OR wire between the Rear Blower Motor 2-pin
No
10 Turn the ignition off.
Disconnect the Rear Blower Motor Resistor Block harness connector.
Disconnect the Rear Blower Front Control Switch harness connector.
Measure the resistance of the Rear Blower Motor High circuit between the Rear
Blower Motor Resistor Block harness connector and the Rear Blower Front Control
Switch harness connector.
Is the resistance below 5 ohms?
Yes → Replace the Rear Blower Motor Resistor Block in accordance with
→ Repair the Rear Blower Motor High circuit for an open.
No
ACTION
Information.
Perform BODY VERIFICATION TEST - VER 1.
harness connector and the Rear Blower Motor Resistor Block
harness connector for an open.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Continued
581
HEATING & A/C
APPLICABILITY
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