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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 325 (Suspension Control System - Automatic Level Control) >> Diagnostic Information & Procedures >> DTC 003 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the right rear air suspension sensor.
  2. Test for less than 2.0 ohms between the low reference circuit terminal B and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the air suspension compressor assembly.
  3. Perform the component test on the right rear air suspension sensor.
    • If the sensor fails the component test, replace the sensor
  4. Test the right rear air suspension signal circuit for an open/high resistance, short to ground, or short to voltage.
    • If the circuit tests normal, replace the air suspension compressor assembly.
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