LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System & Fuel System - 1.8L (Lay) - DTC P0010 To DTC P0420) >> DTC P0351-P0354 >> 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 ignition coil.
  2. Ignition OFF, test for less than 10 ohms of resistance between the coil ground circuit terminal 4 and ground G104.
    • If greater than the specified range, test the coil ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the ignition 1 voltage circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the ignition 1 voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition 1 voltage circuit fuse is open, test all components connected to the ignition 1 voltage circuit and replace as necessary.
    4. IMPORTANT: Ensure that DTCs are cleared before performing this test.
  4. Engine cranking, test for 0.2-1.0 volts between the ignition coil control circuit terminal 3 and ground.
    • If less than the specified range, test the control circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the PCM.
    • If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  5. Test for 4.8-5.2 volts between the ignition fail-safe circuit terminal 2 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 PCM.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the PCM.
  6. If all circuits test normal, test or replace the ignition coil.
scientia non olet · About LEMON Manuals