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Home >> Isuzu >> 2001 >> Rodeo S, 2.2 D, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.2L >> Diagnostic Tests >> DTC P0502: Vehicle Speed Sensor Circuit Low Input >> Diagnostic Aids
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Diagnostic Aids

Check for poor connections at PCM. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals and poor terminal connection. Inspect wiring harness to EVAP vent solenoid, EVAP purge solenoid and fuel tank pressure sensor for an intermittent open or short circuit.

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