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Diagnosis Procedure
1.CHECK CONNECTOR
  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Check the terminals and connectors of the TCM for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
.
Repair the terminal and connector.
 
2.CHECK HARNESS FOR OPEN CIRCUIT
  1. Disconnect the connector of TCM.
  2. Check the resistance between the TCM harness connector terminals.
    TCM harness connectorResistance (Ω)
    Connector No.Terminal No.
    F7589Approx. 54 – 66
Is the measurement value within the specification?
.
Repair the TCM branch line.
 
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to Diagnosis ProcedureDTC Diagnosis Procedure.
Is the inspection result normal?
(Present error)Replace the TCM. Refer to Removal and Installation.
(Past error)Error was detected in the TCM branch line.
Repair the power supply and the ground circuit.