W/Harness Inspection

Terminal and Connector Inspection

1. 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.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found ?






Signal Circuit Inspection

1. Check Voltage
(1) IG "OFF" & ENG "OFF"
(2) Disconnect OTS connector
(3) IG "ON" & ENG "OFF"
(4) Measure voltage between harness terminal 1 of OTS and chassis ground.

Specification : Approx. 5V





(5) Is the measured voltage within specification ?





2. Check open in harness
(1) IG "OFF" & ENG "OFF"
(2) Disconnect OTS and PCM connector.
(3) Measure resistance between terminal 1 of OTS harness connector and terminal 4 of PCM harness connector.

Specification : Approx. below 1 ohms





(4) Is the measured resistance within specification ?






Ground Circuit inspection

1. IG "OFF" & ENG "OFF"
2. Disconnect OTS connector
3. Measure voltage between terminal 1 of OTS harness connector and chassis ground.
4. Measure voltage between terminals 1 and 2 of OTS harness connector.

Specification : Measurement "A" - Measurement 'B' = Approx. below 200 mV





5. Is the measured voltage within specification ?