TEST ACTION APPLICABILITY
8 Turn the ignition off.
Disconnect the Rad Fan #1 harness connector.
Measure the resistance of the ground circuit in the Rad Fan #1 harness connector to
ground.
Is the resistance below 5.0 ohms?
All
Yes → Go To 9
No → Repair the open in the Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
9 Remove the Rad Fan Relay #3 from the PDC.
Turn the ignition on.
With the DRBIIIt, actuate the Low Speed Rad Fan Relay#1.
Using a fused jumper wire connected to ground, probe the Low Speed Rad Relay
Output in the Rad Fan Control Relay #3.
Does the Rad Fan #2 operate?
All
Yes → Check for an open between the Relay #3 and the Rad Fan #1 in
the Relay Output circuit. If OK, replace the Rad Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Check for an openbetween the Relay#2 and Relay#3 in the Relay
Output circuit. If OK, replace the Rad Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
297
DRIVEABILITY - NGC
*CHECKING RAD FAN LOW SPEED OPERATION (TURBO) — Continued