P0694-COOLING FAN 2 CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
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When Monitored:
With the ignition on. Battery voltage greater than 10 volts.
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Set Condition:
The PCM is requesting the TIPM to turn on the Cooling Fan On and it is not operating. The TIPM detects a short to voltage in the Relay Coil Control circuit. One Trip Fault. Three good trips to turn
off the MIL.
Possible Causes
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(K175) HIGH SPEED COOLING FAN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
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HIGH SPEED COOLING FAN RELAY
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TOTALLY INTEGRATED POWER MODULE
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Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
Diagnostic Test
1.
COOLING FAN RELAY OPERATION
Ignition on, engine not running.
With a scan tool, actuate the High Speed Cooling Fan Relay RAD FAN 2.
Is the Cooling Fan operating?
Yes
No
2.
HIGH SPEED COOLING FAN RELAY
Turn the ignition off.
Verify the High Speed Cooling Fan Relay is installed properly and that the terminals are making a tight fit.
Remove the High Speed Cooling Fan Relay and substitute it with a known good Relay.
Ignition on, engine not running.
With a scan tool, actuate the High Speed Cooling Fan Relay.
Is the Cooling Fan operating?
Yes
No
3.
(K175) HIGH SPEED COOLING FAN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition off.
Disconnect the C3 TIPM harness connector.
Remove the High Speed Cooling Fan Relay.
Ignition on, engine not running.
Measure the voltage on the (K175) High Speed Cooling Fan Relay Control circuit at the relay connection.
Is there any voltage present?
Yes
No
4.
TOTALLY INTEGRATED POWER MODULE
NOTE:
Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors.
Pay particular attention to all Power and Ground circuits.
Were any problems found?
Yes
No