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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Tests AT: Fuel Injector Control Module (FICM) Circuit Fuel Delivery Error



PINPOINT TEST AT: FUEL INJECTOR CONTROL MODULE (FICM) CIRCUIT FUEL DELIVERY ERROR

This pinpoint test is intended to diagnose the following:

^ FICMM circuitry open

^ FICMM circuitry short to ground

^ crankshaft position (CKP) or camshaft position (CM P) signal noise

^ powertrain control module ( PCM)





AT1 - AT2:





AT3 - AT4:





AT5 - AT6: