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 "signal Circuit Inspection" procedure.
Check Voltage
IG "OFF" & ENG "OFF"
Disconnect OTS connector
IG "ON" & ENG "OFF"
Measure voltage between harness terminal 1 of OTS and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
YES
▶ Go to "Ground Circuit Inspection" procedure.
NO
▶ Go to "Check open in harness" as follow.
Check open in harness
IG "OFF" & ENG "OFF"
Disconnect OTS and PCM connector.
Measure resistance between terminal 1 of OTS harness connector and terminal 4 of PCM harness connector.
Specification : Approx. below 1Ω
Is the measured resistance within specification ?
YES
▶ Go to "Ground Circuit Inspection" procedure.
NO
▶ Repair or replace open in harness, and then go to "Verification of Vehicle Repair" procedure.
IG "OFF" & ENG "OFF"
Disconnect OTS connector
Measure voltage between terminal 1 of OTS harness connector and chassis ground.
Measure voltage between terminals 1 and 2 of OTS harness connector.
Specification : Measurement "A" - Measurement ’B’ = Approx. below 200mV
Is the measured voltage within specification ?
YES
▶ Go to "Component Inspection" procedure
NO
▶ Repair or replace contact resistance or open in harness and then, go to "Verification of Vehicle Repair" procedure.
