Chrysler Town and Country 2003 Owner's Manual page 300

AUTOMATIC TEMPERATURE CONTROL
*REAR BLOWER MOTOR INOPERATIVE —
TEST
7 Turn the ignition off.
Disconnect the Rear Blower Motor Power Module C1 harness connector.
Measure the resistance between ground and the Ground circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 8
→ Repair the Ground circuit for an open.
No
8 Turn the ignition off.
Disconnect the Rear Blower Motor Power Module C1 harness connector.
Disconnect the Automatic Temperature Control Module C2 harness connector.
Turn the ignition on.
Measure the voltage of the Rear Blower Motor Control circuit.
Is there any voltage present?
Yes → Repair the Rear Blower Motor Control circuit for a short to
→ Go To 9
No
9 Turn the ignition off.
Disconnect the Rear Blower Motor Power Module C1 harness connector.
Disconnect the Automatic Temperature Control Module C2 harness connector.
Measure the resistance of the Rear Blower Motor Control circuit between the Rear
Blower Motor Power Module C1 harness connector and the Automatic Temperature
Control Module C2 harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 10
→ Repair the Rear Blower Motor Control circuit for an open.
No
10 Turn the ignition off.
Make sure that the Rear Blower Motor Power Module C1 harness connector is
connected to the Rear Blower Motor Power Module.
Make sure that the Automatic Temperature Control Module C2 harness connector is
connected to the Automatic Temperature Control Module.
Start the engine.
Press the ATC Power switch on.
Set the Rear System switch on the ATC module to the Rear Control position.
Set the blower switch on the Rear ATC Control panel to LO speed.
While back probing, measure the voltage of the Rear Blower Motor Control circuit in
the Automatic Temperature Control Module C2 harness connector.
Is the voltage above 10.0 volts?
Yes → Go To 11
→ Replace the Rear Blower Motor Power Module in accordance with
No
ACTION
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
voltage.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
With the DRBIII , reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
Continued
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APPLICABILITY
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All
All
All