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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Suspension Control System - Suspension Damping) >> Diagnostic Information and Procedures >> DTC C0696 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the harness connector at the suspension position sensor.
  2. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal C and ground.
    • If greater than 1 ohm, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ESC module.
  3. Ignition ON, test for 3.7-5.5 volts between the 5-volt reference circuit terminal A and ground.
    • If less than 3.7 volts, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ESC module.
    • If greater than 5.5 volts, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC module.
  4. Install a 3-amp fused jumper wire at the signal circuit terminal B. Toggle the jumper wire between the low reference circuit terminal C and the 5-volt reference circuit terminal A. Verify the scan tool position sensor voltage parameter toggles between 0.35-4.75 volts.
    • If the position sensor voltage does not toggle between the min and max values test the signal circuit for a short to voltage, short to ground or an open/high resistance. If the circuit tests normal, replace the ESC module.
  5. If all circuits test normal, test or replace the suspension position sensor.
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