- If the fuel gauge quickly moves from the minimum position to the maximum position, and then returns to the minimum position again, the gauge is OK. Go to step 2.
- If the fuel gauge pointer does not move correctly, replace the fuel gauge control module (tachometer), and check again.
2. Drain the water from the fuel filter.
3. Start the engine and check its condition.
- If the engine condition is OK, go to step 4.
- If the condition of the engine is not in order, start troubleshooting on their symptoms.
4. Turn the ignition key to position «OFF».
5. Disconnect the 2P electrical connector A of the water level indicator in the fuel filter.
6. Connect terminal No. 2 2P of the connector of the water level indicator in the fuel filter with «weight» body with an adapter wire.
7. Turn the ignition key to the ON position (II) and then check the fuel filter water indicator.
- If the fuel filter water light is on, repair open in the BLK wire between the fuel filter water level sensor and G401. If the wire is good, go to step 8.
- If the fuel filter water light does not illuminate, repair open in the GRN wire between the fuel filter water level sensor and the ECM connector #2 terminal #86. If the wire is OK, substitute a known-good ECM, then recheck. If no problem occurs with a known-good ECM, replace the removed ECM.
8. Turn the ignition key to position «OFF».
9. Remove the water level indicator from the fuel filter.
10. Check the float in the fuel filter water level gauge.
- If the float stroke is OK, go to step 11.
- If the float does not move correctly, replace the water level indicator in the fuel filter.
11. Connect the 2P connector to the water level indicator in the fuel filter.
12. Turn on the ignition by turning the key to position «ON» (II).
13. Move the float of the fuel filter water level sensor and then check the water in the fuel filter indicator.
- If the indicator turns on when the float is in the up position, the water level sensor in the fuel filter is OK.
- If the indicator stays on or off when the float is in any position, replace the water level sensor in the fuel filter.