Chrysler Town and Country 2003 Owner's Manual page 598

HEATING & A/C
*FRONT BLOWER MOTOR SPEEDS INCORRECT - MTC —
TEST
4 Turn the ignition off.
Disconnect the A/C - Heater Control Module C2 harness connector.
Disconnect the Front Blower Motor Resistor Block C1 harness connector.
Measure the resistance between the Blower Motor Low Driver circuit and the M1,
M2, M3 and Blower Motor High Driver circuits.
Measure the resistance between the Blower Motor M1 Driver circuit and the M2, M3,
and Blower Motor High Driver circuits.
Measure the resistance between the Blower Motor M2 Driver circuit and the M3 and
Blower Motor High Driver circuit.
Measure the resistance between the Blower Motor M3 Driver circuit and the Blower
Motor High Driver circuit.
Is the resistance below 10K ohms between any of the circuits?
Yes → Repair the shorted Blower Motor Driver circuits.
→ Replace the A/C - Heater Control Module in accordance with the
No
5 Turn the ignition off.
Disconnect the A/C - Heater Control Module C2 harness connector.
Disconnect the Front Blower Motor Resistor Block C1 harness connector.
Measure the resistance of each Blower Motor Driver circuit between the Front
Blower Motor Resistor Block C1 harness connector and the A/C - Heater Control
Module C2 harness connector.
Is the resistance below 5.0 ohms on each of the circuits?
Yes → Replace the Front Blower Motor Resistor Block in accordance
→ Repair all Blower Motor Driver circuits with a resistance above 5
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
ohms for an open.
Perform BODY VERIFICATION TEST - VER 1.
574
Continued
APPLICABILITY
All
All