W/Harness Inspection

P0343 Camshaft Position Sensor A Circuit High Input (Bank 1)

Inspection/Repair - W/Harness Inspection

Terminal & 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

Check Short in signal circuit
1. IG KEY "OFF".
2. Disconnect CMPS connector.
3. IG KEY "ON" & ENG "OFF"
4. Measure the voltage between signal terminal of CMPS harness connector and chassis ground.

Specification :Approx 12 V




5. Is the measured voltage within specification?





Check Short to power in signal circuit
1. IG KEY "OFF".
2. Disconnect CMPS connector and ECM connector.
3. Measure the resistance between power and signal terminal of CMPS harness connector.

Specification :Infinite




4. Is the measured resistance within specification?






Ground Circuit Inspection

Check Open or Short in ground circuit
1. IG KEY "OFF".
2. Disconnect CMPS connector.
3. IG KEY "ON" & ENG "OFF"
4. Measure the voltage between signal terminal of CMPS harness connector and chassis ground. (A)
5. Measure the voltage between signal and ground terminal of CMPS harness connector and chassis ground. (B)

Specification :"A" - "B" = Below 200mV




6. Is the measured voltage within specification?