Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found ?
YES
▶ Repair or replace if necessary and go to "Verification of Vehicle Repair" procedure
NO
▶ Go to "Power Circuit Inspection" procedure.
Key "OFF".
Disconnect the P/S pressure sensor connector.
Key "ON".
Measure the voltage between terminal 3 of P/S pressure sensor harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
YES
▶ Go to "Signal circuit inspection" procedure.
NO
▶ Repair Short to ground in power circuit and go to "Verification of Vehicle Repair" procedure.
Check short to ground inspection
Key "OFF".
Disconnect P/S pressure sensor connector and PCM connector.
Measure the resistance between terminal 2 of P/S pressure sensor harness connector and chassis ground.
Specification : Infinite
Is the measured resistance within specification ?
YES
▶ Go to "Check open in harness" procedure.
NO
▶ Repair short to ground in signal circuit and go to "Verification of Vehicle Repair" procedure.
Check open in harness
Key "OFF".
Disconnect P/S pressure sensor connector and PCM connector.
Measure the resistance between terminal 2 of P/S pressure sensor harness connector and terminal 46 of PCM connector.
Specification : Approx. below 1Ω
Is the measured resistance within specification ?
YES
▶ Go to "Component inspection" procedure.
NO
▶ Repair Open in signal circuit and go to "Verification of Vehicle Repair" procedure.
