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Home >> Saturn >> 2007 >> Outlook XR, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Control System & Fuel System - 4.6L - DTC P0010 To DTC P0336) >> DTC P0102 or P0103 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the MAF/IAT sensor.
  2. Ignition OFF, allow sufficient time for the ECM to power down. Test for less than 5 ohms of resistance between the MAF low reference circuit terminal D 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 volts between the MAF signal circuit terminal A and ground.
    • If less than the specified range, test the signal 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 signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  4. Ignition ON, verify a test lamp illuminates between the ignition circuit 1 terminal C and ground.
    • If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
  5. Connect the J 38522  to the vehicle. Refer to Component Testing.
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