Manual:HUMMER Hummer H3 Base 2010Page:24060 / 37523



Circuit/System Testing — 2010 Hummer H3 Base, Automatic Service Manual

Circuit/System Testing

IMPORTANT: Refer to SIR Service Precautions .
When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
  • Inflatable restraint module
  • SDM module
  • Inflatable restraint module wiring harness connector
  • SDM wiring harness connector

The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.
  1. Verify that the appropriate inflator restraint module connector and CPA are engaged.
    • If the above condition is not found, make the appropriate repair.
  2. Ignition OFF, disconnect the harness connector at the appropriate inflatable restraint module.
  3. With the appropriate load tool adaptor, connect special tool J 38715-A  in place of the inflator restraint module.
  4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
    • If the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A  , reconnect the harness connector at the inflator restraint module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the inflator restraint module.
  5. Ignition OFF, disconnect special tool J 38715-A  and the adaptor.
  6. Disconnect the harness connector at the SDM.
  7. Ignition ON, test for less than 1 volt between the appropriate high control circuit listed below and ground:
    • I/P module Stage 1 terminal 6
    • I/P module Stage 2 terminal 10
    • If greater than the specified range, test the high control circuit for a short to voltage.
  8. Test for less than 1 volt between the appropriate low control circuit terminal listed below and ground:
    • I/P module Stage 1 terminal 7
    • I/P module Stage 2 terminal 11
    • If greater than the specified range, test the low control circuit for a short to voltage.
  9. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal listed below and ground:
    • I/P module Stage 1 terminal 6
    • I/P module Stage 2 terminal 10
    • If less than the specified value, test the high control circuit for a short to ground.
  10. Test for infinite resistance between the appropriate low control circuit terminal listed below and ground:
    • I/P module Stage 1 terminal 7
    • I/P module Stage 2 terminal 11
    • If less than the specified value, test the low control circuit for a short to ground.
  11. Test for less then 1 ohm between the following high control circuit terminals listed below:
    • I/P module Stage 1 terminal 4 and SDM terminal 6
    • I/P module Stage 2 terminal 2 and SDM terminal 10
    • If greater than the specified range, test the high control circuit for an open/high resistance.
  12. Test for less then 1 ohm between the following low control circuit terminals listed below:
    • I/P module Stage 1 terminal 3 and SDM terminal 7
    • I/P module Stage 2 terminal 1 and SDM terminal 11
    • If greater than the specified range, test the low control circuit for an open/high resistance.
  13. If all circuits test normal, replace the SDM.