Fuel Anti-Slosh/Low Fuel Warning Module
The instrument cluster contains a combination fuel anti-slosh/low fuel warning module.
The fuel anti-slosh/low fuel warning module provides a delay to the fuel gauge to prevent the fuel gauge pointer from fluctuating as a result of excessive movement in the fuel tank. The combination fuel anti-slosh/low fuel warning module has additional circuitry to turn on the low fuel warning lamp when the fuel gauge shows approximately one-eighth tank of fuel remaining. The module is not designed to prove-out the low fuel warning indicator; however, the indicator may flash on momentarily just after ignition is turned to the ON position.
The fuel anti-slosh/low fuel warning module is a small printed circuit board which latches into a pocket on the back of the instrument cluster. The electrical connections for the ignition, ground, input from the fuel tank sending unit, output to fuel gauge and low fuel warning output (where equipped) are made through a spring-type connector on the module to the flex circuit on the cluster. There are no provisions for calibration or adjustment of the module. See Fig 1 .
Before troubleshooting low fuel warning symptoms, first observe the fuel gauge indication. If the fuel indication is erroneous, proceed to the fuel gauge diagnosis then to low fuel warning diagnosis. If the fuel indication is correct, proceed directly to the low fuel warning diagnosis.