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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1984 (Wiring Systems And Power Management - DTC B1448 To DTC B1475) >> DTC B1448 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the rear wiper motor.
  2. Verify that DTC B1448 remains current.
    • If DTC B1448 changed to history, test or replace the rear wiper motor.
  3. Ignition OFF, disconnect the X5 harness connector at the BCM.
  4. Test for greater than 70 ohms between the BCM accessory voltage circuit terminal 14 and ground.
    • If less than the specified range, test the circuit for a short to ground. If the circuit tests normal, test or replace the underhood fuse block.
  5. If the circuit tests normal, test or replace the BCM.
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