P0694
SYMPTOM
P0694-COOLING FAN 2 RELAY CONTROL CIRCUIT HIGH
WHEN MONITORED
Ignition on with the Cooling Fan No.2 Relay powered on.
SET CONDITION
The FCM detects the Cooling Fan No.2 Relay voltage above the acceptable voltage at the FCM. The circuit is continuously monitored.
POSSIBLE CAUSES
- (N112) COOLING FAN NO.2 RELAY CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
- HIGH SPEED RADIATOR FAN RELAY
- FRONT CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Scan Tool Testing and Procedures
DIAGNOSTIC TEST
1. LOW SPEED RADIATOR FAN RELAY OPERATION
Ignition on, engine not running.
With a scan tool, actuate the High Speed Radiator Fan Relay.
Is the Cooling Fan Relay operating?
Yes>> Perform (NGC) POWERTRAIN VERIFICATION TEST VER-5. Powertrain Verification Test - Ver 5
No>> Go To 2
2. (N112) COOLING FAN NO.2 RELAY CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
Turn the ignition off. Remove the High Speed Radiator Fan Relay.
Disconnect the C3 FCM harness connector.
Ignition on, engine not running.
Measure the voltage on the (N112) Cooling Fan No.2 Relay Control Circuit at the Relay terminal.
Is the voltage above 0 volts?
Yes>> Repair the short to battery voltage in the (N112) Cooling Fan No.2 Relay Control circuit. Perform BODY VERIFICATION TEST-VER 1.
No>> Go To 3
3. HIGH SPEED RADIATOR FAN RELAY RESISTANCE
Measure the resistance of the High Speed Radiator Fan Relay Coil.
Is the resistance between 60 to 80 ohms?
Yes>> Go To 4
No>> Replace the High Speed Radiator Fan Relay. Perform BODY VERIFICATION TEST-VER 1.
4. FRONT CONTROL MODULE
Note: Before continuing, check the FCM 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 there any problems found?
Yes>> Repair as necessary. Perform BODY VERIFICATION TEST-VER 1.
No>> Replace Front Control Module per Service Information. Perform BODY VERIFICATION TEST-VER 1.