CAN

TCM BRANCH LINE CIRCUIT

Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the ignition switch OFF.
2.Disconnect the battery cable from the negative terminal.
3.Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
-A/T assembly
-Harness connector F103
-Harness connector M116
-Harness connector M28 and PCB harness side connector
Is the inspection result normal?
YES- GO TO 2.
NO- Repair the terminal and connector.

2. CHECK HARNESS FOR OPEN CIRCUIT

1.Disconnect the connector of A/T assembly.
2.Check the resistance between the A/T assembly harness connector terminals.





Is the measurement value within the specification?
YES- GO TO 3.
NO- GO TO 5.

3. CHECK HARNESS FOR OPEN CIRCUIT

1.Remove the joint connector. Exploded View.
2.Check the continuity between the A/T assembly harness connector side and the TCM harness connector side of the joint connector.





Is the inspection result normal?
YES- GO TO 4.
NO- Replace the joint connector.

4. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM. Main Power Supply And Ground Circuit.
Is the inspection result normal?
YES (Present error)-Replace the control valve & TCM. Exploded View.
YES (Past error)-Error was detected in the TCM branch line.
NO- Repair the power supply and the ground circuit.

5. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.Disconnect the harness connector M28.
2.Check the continuity between the A/T assembly harness connector and the harness connector.





Is the inspection result normal?
YES- Replace the PCB harness.
NO- Repair the harness between the A/T assembly harness connector F61 and the harness connector
M28.