Symptom:
*CHECKING THE A/C RELAY OUTPUT
POSSIBLE CAUSES
A/C CLUTCH RELAY OPERATION
(Z1) GROUND CIRCUIT OPEN
A/C CLUTCH
(A17) FUSED B+ CIRCUIT
(C3) A/C CLUTCH OUTPUT CIRCUIT
A/C CLUTCH RELAY
TEST ACTION APPLICABILITY
1 NOTE: Ensure that the refrigerant system is properly charged. Refer to the
appropriate Service Information.
Turn the ignition on.
With the DRBIIIt, actuate the A/C Clutch Relay.
Is the A/C Clutch actuating?
All
Yes → The A/C Clutch System operating properly at this time.
Perform POWERTRAIN VERIFICATION TEST VER-2-NGC.
No → Go To 2
2 Turn the ignition off.
Disconnect the A/C Clutch harness connector.
Measure the (Z1) Ground circuit in the A/C Clutch harness connector to ground.
Is the resistance below 5.0 ohms?
All
Yes → Go To 3
No → Repair the (Z1) Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER-2-NGC.
3 Disconnect the A/C Clutch harness connector.
Turn the ignition on.
With the DRBIIIt, actuate the A/C Clutch Relay.
Measure the voltage of the A/C Clutch Relay Output circuit in the (C3) A/C Clutch
harness connector.
Is the voltage above 11.0 volts?
All
Yes → Replace the A/C Clutch.
Perform POWERTRAIN VERIFICATION TEST VER-2-NGC.
No → Go To 4
4 Turn the ignition off.
Remove the A/C Clutch Relay from the PDC.
Using a 12-volt test light connected to ground, probe the (A17) Fused B+circuit in the
PDC.
Does the test light illuminate brightly?
All
Yes → Go To 5
No → Repair the (A17) Fused B+ circuit. Inspect fuses and replace as
necessary.
Perform POWERTRAIN VERIFICATION TEST VER-2-NGC.
300
DRIVEABILITY - NGC
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