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*A/C INOPERATIVE —
TEST
4
NOTE: If the A/C Clutch fuse is open, refer to the system schematics for all
circuits that are powered by the A/C Clutch fuse to determine the cause of
the blown fuse.
Turn the ignition off.
Remove the A/C Clutch Relay from the PDC.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the PDC.
Does the test light illuminate brightly?
Yes → Go To 5
→ Repair the Fused B+ circuit. Inspect fuse and replace as neces-
No
5
Turn the ignition off.
Install a substitute relay in place of the A/C Clutch Relay.
Turn the ignition on.
With the DRBIII , actuate the A/C Clutch Relay.
Does the A/C Clutch Relay cycle on and off?
Yes → Replace the A/C Clutch Relay.
→ Go To 6
No
6
Turn the ignition off.
Remove the A/C Clutch Relay from the PDC.
Disconnect the A/C Clutch harness connector.
Measure the resistance between ground and the A/C Clutch Relay Output circuit.
Is the resistance above 100 kohms?
Yes → Go To 7
→ Repair the A/C Clutch Relay Output circuit for a short to ground.
No
7
Turn the ignition off.
Remove the A/C Clutch Relay from the PDC.
Disconnect the A/C Clutch harness connector.
Measure the resistance of the A/C Clutch Relay Output circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 8
→ Repair the A/C Clutch Relay Output circuit for an open.
No
8
Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Using a 12-volt test light connected to 12-volts, check the A/C Clutch Ground circuit.
Does the test light illuminate brightly?
Yes → Go To 9
→ Repair the A/C Clutch Ground circuit for an open.
No
Continued
ACTION
sary.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
Inspect fuse and replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
213
APPLICABILITY
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All
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