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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiring Systems And Power Management - DTC B1370 To DTC B1475 >> DTC B1475 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector X5 at the BCM.
  2. Test for greater than 70 ohms between the RAP/ACCY relay coil control circuit terminal 11 and ground.
    • If less than the specified range, test the control circuit for a short to ground. If the circuit tests normal, replace the underhood fuse block.
  3. If all circuits test normal, replace the underhood fuse block.
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