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 "Ground circuit inspection" procedure.
NO
▶ Repair Short in power circuit and go to "Verification of Vehicle Repair" procedure.
Key "OFF".
Disconnect the P/S pressure sensor connector.
Key "ON".
IG "ON"
Measure the voltage between terminal 3 of P/S pressure sensor harness connector and chassis ground. (Fig A)
Measure the voltage between terminal 3 and terminal 1 of P/S pressure sensor harness connector. (Fig B)
Specification :The Difference between "A" and "B" is below 200mV.
Is the measured voltage within specification ?
YES
▶ Go to "Signal circuit inspection" procedure.
NO
▶ Repair as necessary 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 and terminal 3 of P/S pressure sensor harness connector.
Specification : Infinite
Is the measured resistance within specification ?
YES
▶ Go to "Component inspection" procedure.
NO
▶ Repair Short in signal circuit and go to "Verification of Vehicle Repair" procedure.
