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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Component Tests and General Diagnostics

CAMSHAFT POSITION SENSOR
The CMP is a Hall-effect sensor that detects the camshaft position on the compression stroke of the No.1 and No.4 cylinders, converts it into a pulse signal, and inputs it to the PCM. The PCM then computes the fuel injection sequence, etc. based on the input signal.

Circuit Diagram:






TROUBLESHOOTING HINTS
If the CMP Sensor does not operate correctly sequential injection is may not occur and the engine may stall or run irregularly at idle or fail to accelerate normally.

Harness Inspection Procedure: