Transmission Control Module (TCM) Inspection: Notes
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition switch to the ON position, and inspect the TCM terminal voltage, referring to the Terminal Voltage Chart.
- If any TCM terminal voltage is incorrect, inspect the related input of output devices and wiring.
- If no problem is found, replace the TCM.
NOTE:- Use the ground of terminal AP of the TCM when measuring terminal voltage as an error may occur when the negative (-) lead of the circuit tester is connected to ground.