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Home >> Isuzu >> 2002 >> Trooper S, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0502: Vehicle Speed Sensor Circuit - Low Input >> Test Description

Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 10

    To avoid backprobing VSS and possibly damaging a seal or terminal, VSS can be tested at point where transmission harness connects to engine wiring harness. Power and ground can be applied by jumper wires to VSS through in-line harness connectors located at rear of air cleaner assembly. VSS signal is monitored with a DVOM while turning driveshaft or rear wheels.

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