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
If it fails: lemon-manuals.org.ua

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Wide Open Throttle (WOT)

PCM MONITORS:

- Engine Temperature (ECT)
- Manifold Vacuum (MAP sensor)
- Charge Temperature Sensor
- Cam and Crankshaft Position (CMP and CKP Sensors)
- Throttle Opening (TPS)
- Battery Voltage
- Engine Knock Sensor

PCM CONTROLS:

- De-energizes EGR system, by grounding Electronic EGR Transducer (EET) solenoid.
- Adjusts injector pulse width, to supply additional fuel.
- Monitor oxygen sensor and fine tune air/fuel ratio by varying injector pulse width
- Adjust ignition timing.
- De-energize A/C Compressor Clutch relay (if selected)