TEST
ACTION
APPLICABILITY
3
Turn the ignition on.
Disconnect the Fuel Tank Module harness connector.
Measure the resistance of the Ground circuits in the Fuel Tank Module harness
connector.
Is the resistance below 5.0 ohms for both measurements?
All
Yes
→ Go To 4
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Fuel Tank Module harness connector.
Turn the ignition on.
With the DRBIII
t in Body Computer then Sensors, monitor the Fuel Sensor.
Using a jumper wire, jumper the Fuel Level Sensor Signal circuit to the ground
circuit in the Fuel Tank Module harness connector.
Does the DRB display below 0.5 volt?
All
Yes
→ Replace the Fuel Level Sending Unit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Fuel Tank Module harness connector.
Disconnect the BCM C3 harness connector.
Measure the resistance of the Fuel Level Sensor Signal circuit between the Fuel Tank
Module harness connector and the BCM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Fuel Level Sensor Signal for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
7
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→ Repair as necessary
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
628
INSTRUMENT CLUSTER
FUEL LEVEL SENDING UNIT INPUT OPEN —
Continued