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Home >> Pontiac >> 2010 >> Solstice Base, 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls And Fuel - 2.0L - DTC P000A To DTC P0238) >> DTC P0191, P0192, or P0193 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition OFF, disconnect the harness connector at the fuel rail pressure sensor.
  2. Ignition OFF, test for less than 2 Ω between the low reference circuit terminal 1 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
    • If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
    • If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  4. Install a 3 A fused jumper wire at the signal circuit terminal 2. Toggle the jumper wire between the low reference circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool Fuel Rail Pressure Sensor toggles between 0.1 MPa and 20.1 MPa.
    • If the specified parameter does not toggle between the minimum and maximum 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 ECM.
  5. If all circuits test normal, replace the fuel rail pressure sensor.
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