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 ?






Power Circuit Inspection

1. IG "OFF"
2. Disconnect MAPS connector.
3. IG "ON"
4. Measure the voltage between terminal 2 of MAPS harness connector and ground.

Specification : Approx. 5V





5. Is the measured voltage within specification ?






Signal Circuit Inspection

1. Check short to ground in harness.
(1) IG "OFF"
(2) Disconnect MAPS and PCM connector.
(3) Measure the resistance between terminal 1 of MAPS harness connector and ground.

Specification : Infinite





(4) Is the measured resistance within the specification ?





2. Check open in the harness
(1) IG "OFF"
(2) Disconnect MAPS and PCM connector.
(3) Measure the resistance between terminal 1 of MAPS harness connector and terminal 8 of PCM harness connector

Specification : Approx. below 1 ohms





(4) Is the measured resistance within the specification ?