W/Harness Inspection

Engine

Engine Control - P0346 Camshaft Position Sensor A Circuit Range/Performance (Bank 2) - 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 Supply Circuit Inspection

1. IG "OFF" and disconnect CMPS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between terminal 1 of CMPS (B2) harness connector and chassis ground.

Specification : Approx. 5 V




4. Is the measured voltage within specification?






Signal Circuit Inspection

1. Check voltage
(1) IG "OFF" and disconnect CMPS connector.
(2) IG "ON" and ENG "OFF"
(3) Measure voltage between terminal 3 of CMPS (B2) harness connector and chassis ground.

Specification : Approx. 5 V




(4) Is the measured voltage within specification?





2. Check short in harness
(1) IG "OFF" and disconnect CMPS connector.
(2) Measure resistance between terminals 1 and 3 of CMPS (B2) harness connector.

Specification : Infinite




(3) Is the measured resistance within specification?





3. Check short to ground in harness
(1) IG "OFF" and disconnect CMPS connector and PCM connector.
(2) Measure resistance between terminal 3 of CMPS (B2) harness connector and chassis ground.

Specification : Infinite




(3) Is the measured resistance within specification?





4. Check open in harness
(1) IG "OFF" and disconnect CMPS connector and PCM connector.
(2) Measure resistance between terminal 3 of CMPS harness connector and terminal 24 of PCM harness connector.

Specification : Below 1 Ohms




(3) Is the measured resistance within specification?






Ground Circuit inspection

1. IG "OFF" and disconnect CMPS connector and then IG "ON".
2. Measure voltage between terminal 3 of CMPS harness connector and chassis ground.
3. Measure voltage between terminals 2 and 3 of CMPS harness connector.

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




A. 4. Is the measured voltage within specification?