Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hummer >> 2008 >> H3 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 178 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0562 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC P0562 is set as current.
  2. Engine running, measure the voltage at the battery terminals and compare it with the Ignition 1 Signal parameter. The battery and Ignition 1 signal readings do not differ more than 2 volts.
    • If greater than the specified value, test the Ignition 1 circuits and ground circuits for an open/high resistance.
      • Ignition 1 signal 3.6L X2 terminal 5 and X2 terminal 54
      • Ignition 1 signal 4.4L / 4.6L X1 terminal 19 and X2 terminals 13 and 28
      • Ground circuits 3.6L X2 terminals 1, 2 and 4
      • Ground circuits 4.4L / 4.6L X2 terminal 73 and X3 terminal 73
  3. If the circuits test nor mal, replace the ECM.
scientia non olet · About Mike's Workshop Manuals