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

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Test 8 FBCA Motor


Fig.8 - MCU System Wiring Circuit:






1. With ignition key off, connect an ohmmeter lead to pin 687, Fig. 8 of Feedback Carburetor Actuator (FBCA) motor, and other lead to FBCA motor case.

2. If resistance is greater than 190,000 ohms, proceed to Test 6 Feedback Carburetor Actuator. If FBCA is okay, reconnect vehicle harness to the FBCA motor. If not OK, replace FBCA and retest.