W/Harness Inspection

P0340 Camshaft Position Sensor A Circuit Malfunction (Single Sensor)

Inspection/Repair - 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?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
1) Go to "CMPS Power circuit inspection" procedure.

Power Supply Circuit Inspection

1. Key "OFF".
2. Disconnect CMPS connector.
3. key "ON".
4. Measure the voltage between terminal 1 of CMPS harness connector and chassis ground.
A. Specification : B+




5. Is the measured voltage within specification?
YES
1) Go to "Signal circuit inspection" procedure.
NO
1) Repair Open or Short circuit and then, go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection

1. Check Open in signal circuit
(1) Key "OFF".
(2) Disconnect CMPS connector.
(3) key "ON".
(4) Measure the voltage between terminal 2 of CMPS harness connector and chassis ground.
A. Specification : Approx 12 V




(5) Is the measured voltage within specification?
YES
1) Go to "Short to power circuit inspection" procedure.
NO
1) Repair Open in signal circuit and then, go to "Verification of Vehicle Repair" procedure.
2. Check Short to power in signal circuit
(1) Key "OFF".
(2) Disconnect CMPS connector and PCM connector.
(3) Measure the resistance between terminal 1 and 2 of CMPS harness connector.
A. Specification : Infinite




(4) Is the measured resistance within specifications?
YES
1) Go to "Ground circuit inspection" procedure.
NO
1) Repair Short to power in signal circuit and then, go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

1. Key "OFF".
2. Disconnect CMPS connector.
3. Key "ON".
4. Measure the voltage between terminal 2 of CMPS harness connector and chassis ground. (A)
5. Measure the voltage between terminal 2 and 3 of CMPS harness connector. (B)
A. Specification : "A" - "B" = Below 200mV




6. Is the measured voltage within specification?
YES
1) Go to "Component Inspection" procedure.
NO
1) Repair Open in signal circuit and then, go to "Verification of Vehicle Repair" procedure.