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DRIVEABILITY - NGC
Symptom:
P0481-COOLING FAN 2 CONTROL CIRCUIT
When Monitored and Set Condition:
P0481-COOLING FAN 2 CONTROL CIRCUIT
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: An open or shorted circuit is detected in the radiator fan relay control
circuit. One trip Fault.
HIGH SPEED RADIATOR FAN RELAY OPERATION
(A16) FUSED IGNITION SWITCH OUTPUT CIRCUIT
HIGH SPEED RADIATOR FAN RELAY RESISTANCE
(C27) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT OPEN
(C27) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM
TEST
1
Turn the ignition on.
With the DRBIII , actuate the High Speed Radiator Fan Relay.
Is the High Speed Radiator Fan Relay operating?
Yes → Refer to the INTERMITTENT CONDITION symptom in the
→ Go To 2
No
2
Turn the ignition off.
Remove the High Speed Radiator Fan Relay from the PDC.
Turn the ignition on.
Measure the voltage of the (A16) Fused Ignition Switch Output circuit in the PDC.
Is the voltage above 11.0 volts?
Yes → Go To 3
→ Repair the (A16) Fused Ignition Switch Output circuit. Check and
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
replace any open fuses.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
190
APPLICABILITY
All
All
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