TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Install a substitute relay in place of the A/C Compressor Clutch Relay.
Turn the ignition on.
With the DRB, actuate the A/C Compressor Clutch Relay.
Is the A/C Compressor Clutch clicking?
All
Yes
→
Replace the A/C Compressor Clutch Relay.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
4
4
Turn the ignition off.
Disconnect the ECM harness connector(s).
Remove the A/C Compressor Clutch Relay from the PDC.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between ASD/Diesel Power Relay cavities 30 and 87 (in PDC).
Turn the ignition on.
Measure the voltage of the A/C Compressor Clutch Relay Control circuit.
Is the voltage above 1.0 volt?
All
Yes
→
Repair the A/C Compressor Clutch Relay Control circuit for a
short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
5
5
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
211
HEATING & A/C
P1655-AC CONTROL SHORT CIRCUIT - DIESEL —
Continued