Troubleshooting

(Table 116, contd)
Troubleshooting Test Steps
Values Results
3. Disconnect the WIF Sensor
A. Turn the keyswitch to the OFF position.
B. Disconnect the WIF sensor from the harness.
C. Turn the keyswitch to the ON position. Wait for at least 1
minute.
D. Use the electronic service tool to check for an active 97-15
diagnostic code.
Diagnostic
codes
Result: The code disappears with the sensor disconnected.
Repair: Replace the WIF sensor. Use the electronic service
tool to clear all logged diagnostic codes and verify that the re-
pair eliminates the fault.
Result: A 97-15 diagnostic code is still active with the sensor
disconnected.
Reconnect the sensor and proceed to Test Step 4.
4. Check the Sensor Signal Wire for a Short Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the WIF sensor connector. Disconnect the P1
connector from the ECM.
C. Use a suitable multimeter to check the resistance between
P1:30 and all other terminals on the P1 connector.
Greater than 1
k Ohm
Result: At least one of the resistance measurements is less
than 1 k Ohm.
The fault is in the wiring between the WIF sensor and the P1
ECM connector.
Repair: Check all wiring between the WIF sensor and the
ECM. Refer to the Electrical Schematic for the application.
Replace the faulty wiring.
Use the electronic service tool to clear all logged diagnostic co-
des and verify that the repair eliminates the fault.
Result: Each resistance measurement is greater than 1 k
Ohm.
Contact the Dealer Solution Network (DSN).
5. Check that the Sensor is Receiving the Correct Voltage
A. Turn the keyswitch to the OFF position.
B. Disconnect the WIF sensor from the harness.
C. Turn the keyswitch to the ON position.
D. Measure the voltage between terminal 3 on the harness
connector for the WIF sensor and a suitable ground.
E. Turn the keyswitch to the OFF position.
Greater than 11
V
Result: The measured voltage is less than 11 V.
The fault is in the switched battery supply wiring to pin 3 on the
WIF sensor connector.
Repair: Check all battery supply wiring to the WIF sensor. Re-
fer to the Electrical Schematic for the application.
Replace the faulty wiring.
Use the electronic service tool to clear all logged diagnostic co-
des and verify that the repair eliminates the fault.
Result: The measured voltage is at least 11 V.
Proceed to Test Step 6.
(continued)
UENR0612-07 253
Circuit Tests
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