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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Engine Controls And Fuel - 3.6L - DTC P0335 To P2105) >> DTC P0335, P0336, or P0338 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, remove the fuse that supplies B+ to terminal 56-X2 of the ECM.
  2. Disconnect the harness connector at the crankshaft position (CKP) sensor.
  3. Test for 5 Ω or less between the low reference circuit terminal 1 and ground.
    • If greater than the specified range, test for an open/high resistance in the low reference circuit. If the circuits/connections test normal, replace the ECM.
  4. Install the fuse that supplies B+ to terminal 56-X2 of the ECM.
  5. Ignition ON, test for greater than 4.8 V between the 5-volt reference circuit terminal 3 and the low reference circuit terminal 1.
    • If less than the specified value, test for an open/high resistance in the 5-volt reference circuit. If the circuits/connections test normal, replace the ECM.
  6. Test for 4.8-5.2 volts between the signal circuit terminal 2 and ground.
    • If the voltage is greater than specified range, test for a short to voltage in the signal circuit. If circuit/connections test normal, replace the ECM.
    • If the voltage is less than the specified range, test for a short to ground or an open/high resistance in the signal circuit. If circuit/connections test normal, replace the ECM.
  7. If all circuits/connections test normal, test or replace the CKP sensor.
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