STEP 1. Check the TCM terminal voltage.
STEP 2. Check for continuity in PLLS line between the TCM connector and A/T control solenoid valve assembly connector.
STEP 3. Check the line pressure linear solenoid.
STEP 4. Check for continuity in signal line between the A/T control solenoid valve assembly connector and the line pressure linear solenoid valve connector.
Is the check result satisfactory?
Replace the valve body assembly. Repair the connector(s) or wiring harness.
STEP 5. Check the TCMU and A/T control solenoid valve assembly connector pin terminals and the connection status.
STEP 6. Check the TCM and A/T control solenoid valve assembly connector pin terminals and the connection status.
Is the check result normal?
Replace the TCM. Repair or replace the failure section.
STEP 7. Erase the DTC, and drive the vehicle for a while.