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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Crankshaft Position Sensor: Testing and Inspection

Crank Angle Sensor:




Crank Angle Sensor Testing:






1. Remove sensor and measure resistance across terminals:

0.95 - 1.23K ohms @ 68°F (20°C)

2. If not as specified, replace sensor.
3. On installation, check sensor to sensor plate clearance with feeler gauge:

0.039 - 0.078 in (1.0 - 2.0 mm)