Dodge ZB 2005 Service Manual page 1612

*BLOWER MOTOR INOPERATIVE —
TEST
4 Turn the ignition off.
Disconnect the Blower Motor harness connector.
Measure the resistance between ground and the Blower Motor Relay Output circuit.
Is the resistance below 10K ohms?
Yes → Repair the Blower Motor Relay Output circuit for a short to
→ Replace the Blower Motor and fuse in accordance with the Service
No
5 Turn the ignition off.
Ensure Power Distribution Center Fuse #1 is installed.
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 connect to ground, back probe the Blower Motor High
Driver circuit in the Blower Motor harness connector.
Does the test light illuminate brightly?
Yes → Go To 6
→ Go To 8
No
6 Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 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 the Blower Motor High
Driver circuit in the A/C - Heater Control Module C1 harness connector.
Does the test light illuminate brightly?
Yes → Go To 7
→ Repair the Blower Motor High Driver circuit for an open.
No
7 Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Measure the resistance between ground and the Ground circuit.
Is the resistance below 5.0 ohms?
Yes → Replace the A/C - Heater Control Module in accordance with the
→ Repair the Ground circuit for an open.
No
8 Perform the Blower Motor Relay, Relay Test and Relay Circuit Test. Refer to
Diagnosis and Testing Under Heating and Air Conditioning in the Service Manual.
Do the relay and circuits test Ok?
Yes → Go To 9
→ Repair as necessary.
No
ACTION
ground and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Continued
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HEATING & A/C
APPLICABILITY
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