Dodge ZB 2005 - Page 1612

TEST ACTION APPLICABILITY
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?
All
Yes → Repair the Blower Motor Relay Output circuit for a short to
ground and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
No → Replace the Blower Motor and fuse in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
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?
All
Yes → Go To 6
No → Go To 8
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?
All
Yes → Go To 7
No → Repair the Blower Motor High Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
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?
All
Yes → Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No → Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
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?
All
Yes → Go To 9
No → Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
231
HEATING & A/C
*BLOWER MOTOR INOPERATIVE — Continued