Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Camshaft Position (CMP) Sensor On-Vehicle Inspection

Camshaft Position (CMP) Sensor On-Vehicle Inspection

1. Turn off ignition switch.
2. Disconnect CMP sensor connector.
3. Turn ignition switch to ON position and check that voltage of CMP sensor connector (vehicle side) between terminals "1" and "2" is 4 - 6 V.
If faulty condition is found, check ECM power supply circuit, ECM ground circuit, wire harness between ECM and CMP sensor and connections.






4. Check that CMP sensor signal is outputted properly. Pinout Values and Diagnostic Parameters
If faulty condition is found, check the following.
- Wire harness and connections
- CMP sensor: Camshaft Position (CMP) Sensor Inspection