Shift Solenoids
- Obtain access to TCM. See Figure and Figure
. Ensure ignition is off. Disconnect electrical connector from TCM. To check solenoid operation, connect jumper wire between +B terminal and S1, S2 and S3. See Figure. Ensure operating sound can be heard when battery voltage is connected. Replace solenoid if operating sound cannot be heard.
- To check solenoid seals, connect battery voltage to solenoid. Apply fluid to solenoid with battery voltage connected. See Fig 1.
- With battery voltage applied, fluid should pass through solenoid. Disconnect battery and ensure fluid does not pass through solenoid. Replace solenoid if defective.
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.