Chrysler Sebring 2004 Service Manual page 2893

HEATING & A/C
*BLOWER MOTOR SPEEDS INCORRECT - MTC —
TEST
4 Turn the ignition off.
Disconnect the A/C - Heater Control C2 harness connector.
Turn the ignition 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 Blower Motor
Driver circuits (cavities 2, 3, 7, and 10) in the A/C - Heater Control C2 harness
connector.
Does the test light illuminate brightly on each circuit?
Yes → Go To 5
→ Go To 7
No
5 Turn the ignition off.
Disconnect the A/C - Heater Control C2 harness connector.
Disconnect the Blower Motor Resistor Block harness connector.
Measure the voltage of each of the Blower Motor Driver circuits (cavities 2, 3, 7, and
10).
Is there any voltage present?
Yes → Repair the Blower Motor Driver circuit(s) for a short to voltage.
→ Go To 6
No
6 Turn the ignition off.
Disconnect the A/C - Heater Control C2 harness connector.
Disconnect the Blower Motor Resistor Block harness connector.
Measure the resistance between the Low Blower Motor Driver circuit and the M1,
M2, and High Blower Motor Driver circuits.
Measure the resistance between the M1 Blower Motor Driver circuit and the M2 and
High Blower Motor Driver circuits.
Measure the resistance between the M2 Blower Motor Driver circuit and the High
Blower Motor 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 in accordance with the Service
No
7 Turn the ignition off.
Turn the Blower switch to the off position.
Disconnect the A/C - Heater Control C2 harness connector.
Disconnect the Blower Motor Resistor Block harness connector.
Measure the resistance of each Blower Motor Driver circuit between the Blower
Motor Resistor Block harness connector and the A/C - Heater Control C2 harness
connector.
Is the resistance below 5.0 ohms on each of the circuits?
Yes → Replace the Blower Motor Resistor Block in accordance with the
→ Repair the Blower Motor Driver circuit(s) for an open.
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
344
Continued
APPLICABILITY
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