W/Harness Inspection

Engine Control
P0237 Turbocharger/Supercharger Boost Sensor \'A\' Circuit Low - Inspection/Repair:_:W/Harness Inspection

Power Circuit Inspection

1. Ignition "ON" & Engine "OFF".
2. Measure voltage between power terminal of the PUT harness connector and chassis ground.

Specification :5 V








3. Is voltage within the specification?






Signal Circuit Inspection

1. Ignition "OFF".
2. Disconnect PUT Control connector and ECM connector.
3. Measure resistance between signal terminal of the PUT signal harness connector and chassis ground.

Specification :0 Ohms




4. Is resistance within the specification?






Check for Open in signal harness

1. Ignition "OFF".
2. Disconnect PUT and ECM connector.
3. Measure the resistance between signal terminal of PUT and ECM.

Specification :Approx. 0Ohms




4. Is resistance within the specification?






Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?