Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com

TCM Power Source Circuit

TCM Power Source Circuit

DESCRIPTION
When the engine switch is turned on (IG), voltage from the ECM's MREL terminal is applied to the EFI MAIN 2 relay. This causes the contacts of the EFI MAIN 2 relay to close, which supplies power to terminal +B of the TCM.

WIRING DIAGRAM:





INSPECTION PROCEDURE

Step 1(Part 1):




Step 1(Part 2):