LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 471 (Instrument Panel System Displays And Gauges) >> Diagnostic Information and Procedures >> Fuel Gauge Inaccurate or Inoperative >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Circuit/System Verification must be performed before proceeding with Circuit/System Testing.
  • If equipped, the following tests can be performed at an in-line connector. See schematics for the corresponding terminals to test at.
  1. Ignition OFF and scan tool disconnected, disconnect the harness connector at the fuel level sensor. It may take up to 2 minutes for all vehicle systems to power down.
  2. Ignition OFF, test for less than 2 Ω between the low reference circuit terminal C and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuits tests normal, replace the ECM.
  3. Install a Signal Generator and Instrument Panel Tester between the signal circuit terminal D and the low reference circuit terminal C.
  4. Ignition ON, vary the signal generator resistance between 40 and 250 Ω. Verify that the scan tool Fuel Tank Level Remaining parameter displays a range that varies between 95 and 5 percent as the signal generator resistance changes.
    • If not within the specified range, test the signal circuit for an open/high resistance. If the circuit test normal, replace the ECM.
  5. Vary the signal generator resistance between 40 and 215 Ω. Verify that the fuel gauge displays a range that varies between full and approximately 1/8 tank as the signal generator resistance changes.
    • If the gauge is incorrect, replace the IPC.
  6. If all circuits test normal, perform the fuel level sensor component test before replacing the fuel level sensor.
scientia non olet · About LEMON Manuals