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)

Or, hide this message: temporarily or permanently

Input Devices

[Input Device]




Mass Air Flow Sensor




Crankshaft Position Sensor (NE Signal), Camshaft Position Sensor (SGC Signal)




Engine Coolant Temperature Sensor




Intake Air Temperature Sensor (AC)




Throttle Position Sensor (Closed Throttle Position Switch Included)




Heated Oxygen Sensor




P/S Pressure Switch




A/C Signal (A/C Amplifier)




Blower Signal (A/C Amplifier)




Brake Signal (Brake Switch)




Knock Sensor




EGR Valve Position Sensor




High Air Charging Pressure Zone Signal




Vehicle Speed Sensor




Manifold Absolute Pressure Sensor




Intake Air Temperature Sensor (D/C)




Intake Air Temperature Sensor (L/C)




IGF Signal (Ignition Coil)

Torque Reduction Request Signal (ABS/TCS Control Unit):




Torque Reduction Request Signal (ABS/TCS Control Unit)




Rear Window Defroster Switch




Headlight Switch