Circuit/System Testing
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector of the left side fuel level sensor.
- Ignition ON, verify the scan tool Fuel Level Sensor - Left Tank voltage parameter is at 5.0 volts.
- If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the ECM.
- Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool Fuel Level Sensor - Left Tank voltage parameter is at 0.0 volts.
- If greater than the specified range, test the signal circuit for a high resistance. If the circuit tests normal, replace the ECM.
- Install a 3A fused jumper wire between the signal circuit terminal A and the low reference circuit terminal D. Verify the scan tool Fuel Level Sensor-Left Tank voltage parameter is at 0.0 volts.
- If greater than the specified range, test the low reference circuit for a high resistance. If the circuit tests normal, replace the ECM.
- Remove the fuel tank.
- Remove the fuel tank primary and secondary modules and inspect for the following conditions:
- A clogged secondary fuel strainer and pick up
- A clogged or restricted siphon jet pump
- Broken, clogged or restricted flex tubes, primary fuel tank module
- Broken, clogged, disconnected, or restricted fuel transfer tube inside tank
- If you find any of the above conditions, repair as necessary.
- If all circuits/connections test normal, test or replace the left/secondary fuel level sensor.