(Table 114, contd)
Troubleshooting Test Steps Values Results
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.
Check all battery supply wiring to the WIF sensor. 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: The measured voltage is at least 11 V.
Proceed to Test Step 6.
6. Check the WIF sensor Ground Wire
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 2 and terminal 3 on
the harness connector for the WIF sensor.
Greater than 11
V
Result: The measured voltage is less than 11 V.
The fault is the wiring between terminal 2 on the WIF sensor
connector and battery negative.
Check all wiring between the WIF sensor and battery negative.
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 7.
7. Create a Short Circuit at the WIF Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the WIF sensor from the harness.
C. Fabricate a jumper and install the jumper wire between ter-
minal 1 and terminal 2 on the harness connector for the WIF
sensor.
D. Turn the keyswitch to the ON position. Wait for at least 1
minute.
E. Use the electronic service tool to check for an active 97-15
diagnostic code.
F. Turn the keyswitch to the OFF position.
G. Remove the jumper.
Diagnostic
codes
Result: A 97-15 diagnostic code is active with the jumper
installed.
Replace the WIF sensor.
Use the electronic service tool to clear all logged diagnostic co-
des and verify that the repair eliminates the fault.
Result: A 97-15 diagnostic code is not active with the jumper
installed.
Proceed to Test Step 8.
8. Check the Sensor Signal Wire for an Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the WIF sensor. Disconnect the P1 connector
from the ECM.
C. Use a suitable multimeter to measure the resistance be-
tween terminal 1 on the harness connector for the WIF sensor
and P1:30.
Less than 5
Ohms
Result: The measured resistance is greater than 5 Ohms.
The fault is in the wiring between the WIF sensor and the P1
connector.
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: The measured resistance is less than 5 Ohms.
Contact the DSN.
UENR0612 237
Circuit Tests
This document has been printed from SPI2. NOT FOR RESALE
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