Gauge Does Not Indicate Full

In case of a customer complaint of the above condition where the fuel tank is believed to be full, but the gauge indicates less than full with the vehicle on level ground, check that the resistance at the fuel level sender unit is approximately 80 ohms.

If the resistance is approximately 80 ohms, but the gauge reading is incorrect, the instrument pack may be incorrectly calibrated. Refer to "Using the PDU".

If the resistance is greater than 80 ohms, the fuel tank is not full or the sender unit is sticking.

If necessary, pump fuel from the tank as in the calibration check until the tank is empty. Ensure that a minimum of 21.1 gallons (80 liters) can then be added from that point. Check the fuel gauge indication and/or the sender unit resistance.