TCM Inspection: Notes
CAUTION:
- Water or foreign objects entering the connector can cause a poor connection or corrosion. Be sure not to drop water or foreign objects on the connector when disconnecting it.
NOTE:
- The TCM terminal voltage can vary with conditions when measuring and changes due to age deterioration on the vehicle, causing false diagnosis. Therefore a comprehensive inspection of the input and output systems, and the TCM is necessary to determine where the malfunction occurs.
- Disconnect the negative battery cable.
- Remove the TCM. (See TCM REMOVAL/INSTALLATION .)
- Connect the TCM connector.
- Connect the negative battery cable.
- Connect the voltmeter (-) lead to body GND.
- Measure the voltage at each terminal.
- If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s) referring to the "Inspection Item" column in the "TCM Terminal Voltage".