Circuit/System Testing

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2007 Pontiac Torrent and 2007 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Refer to SIR Caution .

Disable the inflatable restraint steering wheel module when performing this diagnostic. Refer to SIR Disabling and Enabling .

  1. Ignition OFF, cruise control switch OFF, disconnect the harness connector C3 at the BCM.
  2. Ignition ON, verify that a test lamp does not illuminate between the cruise control indicator dimming signal circuit and ground.
    • If the test lamp illuminates, test the cruise control indicator dimming signal circuit for a short to voltage. If the circuit tests normal, replace the steering wheel controls switch assembly-left.
  3. If the circuits test normal, replace the BCM.
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.