W/Harness Inspection

Engine Control
P2159 Vehicle Speed Sensor - Inspection/Repair:_:W/Harness Inspection

Signal Circuit Inspection

With ABS System
1. Check for short to ground in signal circuit
(1) Ignition "OFF"
(2) Disconnect ECM and ABS Control Module connectors
(3) Measure resistance between Vehicle speed input terminal of ECM harness connector and chassis ground.

Specification :Infinite




(4) Is resistance within the specification?





2. Check for short to battery in signal circuit
(1) Ignition "ON" & Engine"OFF"
(2) Measure voltage between Vehicle speed input terminal of ECM harness connector and chassis ground

Specification :Approx. 0V




(3) Is voltage within the specification?





3. Check for open in signal circuit
(1) Ignition "OFF"
(2) Measure resistance between Vehicle speed input terminal of ECM harness connector and Vehicle speed output terminal of ABS/ESP Control Module harness connector.

Specification :Approx. 0Ohms




(3) Is resistance within the specification?