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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0040 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the wheel speed sensor.
  2. Connect a 12 volt test lamp between B+ and the wheel speed sensor supply voltage circuit terminal 1.
  3. Test for 4-8 mA on the low reading between the sensor signal circuit terminal 2 and ground when spinning the wheel very slow.
    • If not within the specified range, replace the wheel speed sensor.
  4. Test for 12-16 mA on the high reading between the sensor signal circuit terminal 2 and ground when spinning the wheel very slow.
    • If not within the specified range, replace the wheel speed sensor.