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

Tests AS: Loss of Communication With The Fuel Injection Control Module (FICM)



PINPOINT TEST AS: LOSS OF COMMUNICATION WITH THE FUEL INJECTOR CONTROL MODULE (FICM)

This pinpoint test is intended to diagnose the following:

^ FICM relay

^ harness circuits: B+ CAN2+ CAN2- IGN START/RUN FICM Vehicle Power FICM Control and GND

^ FICM

^ powertrain control module ( PCM)

















AS1 - AS2:





AS3 - AS4:





AS5 - AS6:





AS7 - AS8:





AS9 - AS10:





AS11 - AS12:





AS13 - AS14: