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Home >> Lexus >> 2007 >> LS 460 V8-4.6L (1UR-FSE) >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Component Tests and General Diagnostics >> TCM Power Source Circuit

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):





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