TEST ACTION APPLICABILITY
3 Turn the ignition off.
Remove the Low Speed Rad Fan Relay #1 from the PDC.
Disconnect the Rad Fan #2 harness connector.
Measure the resistance between ground and the Low Speed Rad Fan Relay Output
circuit at the Low Speed Rad Fan Relay #1 connector in the PDC.
Is the resistance below 5.0 ohms?
All
Yes → Repair the short to ground in the Low Speed Rad Fan Output
circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 4
4 Turn the ignition off.
Remove the Rad Fan Control Relay #3 from the PDC.
Disconnect the Rad Fan #2 harness connector.
Measure the resistance between ground and the Low Speed Rad Fan Relay Output
circuit at the Rad Fan Control Relay #3 connector in the PDC terminal
Is the resistance below 5.0 ohms?
All
Yes → Repair the short to ground in the Low Speed Rad Fan Output
circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 5
5 NOTE: All relays and connectors reconnected.
Turn the ignition on.
With the DRBIIIt, actuate the Low Speed Rad Relay.
WARNING: Keep hands away from the Rad Fan when it is operating.
Disconnect the Rad Fan #1 harness connector.
Is the Fan #2 still operating?
All
Yes → Repair the Low Speed Rad Fan Output circuit for a short to
ground.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Replace the Rad Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
6 Remove the Low Speed Relay #1 from the PDC.
Using a 12-volt test light connected toground, probe theFused B+ circuitin the PDC.
Does the test light illuminate brightly?
All
Yes → Go To 7
No → Repair the open in the Fused B+ circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
7 Turn the ignition off.
Install a substitute relay in place of Radiator Fan Relay No. 1.
Turn the ignition on.
With the DRB, actuate the Low Speed Rad Fan Relay.
NOTE: Repeat the test above if the Rad Fans did not operate.
Did the Rad Fan operate normally when the relay(s) were substituted?
All
Yes → Replace the Radiator Fan Relay that allowed the Fans to operate
normally.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 8
296
DRIVEABILITY - NGC
*CHECKING RAD FAN LOW SPEED OPERATION (TURBO) — Continued
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