Diagnostic Aids

2006 Isuzu Ascender S, 4.2 S, 4WDSECTION Diagnostic Aids
  • DTC B3808 could also set if the door lock relay winding is open.
  • If both DTC B3808 and B3809 are set as current, the battery positive voltage circuit or the LOCKS fuse could be open. If the LOCKS fuse is open, the cause is most likely one of the following:
    • A short to ground in the relay battery positive voltage circuit.
    • A short to ground in the door lock actuator lock or unlock control circuits.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.