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DTC Diagnosis Procedure
1.CHECK NETWORK-DTC
Check the CAN diagnosis results from M.U.T.-III SE to see that the drivetrain CAN communication 2 circuit has no malfunction.
Is the drivetrain CAN communication circuit 2 normal?
.
Check and repair drivetrain CAN communication 2 circuit.
 
2.CONNECTOR INSPECTION
  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Disconnect all the unit connectors on drivetrain CAN communication 1 circuit.
  4. Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?
.
Repair the terminal and connector.
 
3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the ECM harness connector and the chassis control module harness connector.
ECM harness connectorChassis control module harness connectorContinuity
Connector No.Terminal No.Connector No.Terminal No.
F5130B3617Existed
314Existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
4.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the ECM harness connector terminals.
ECM harness connectorContinuity
Connector No.Terminal No.
F513031Not existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
5.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the ECM harness connector and the ground.
ECM harness connectorGroundContinuity
Connector No.Terminal No.
F5130Not existed
31Not existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
6.CHECK TERMINATION CIRCUIT
  1. Remove the ECM and the chassis control module.
  2. Check the resistance between the ECM terminals.
    ECMResistance (Ω)
    Terminal No.
    3031Approx. 108 – 132
  3. Check the resistance between the chassis control module terminals.
    Chassis control moduleResistance (Ω)
    Terminal No.
    174Approx. 108 – 132
Is the measurement value within the specification?
.
Replace the ECM and/or the chassis control module.
 
7.CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.
Inspection result
: .
: Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
 
8.CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Disconnect one of the unit connectors of drivetrain CAN 1 communication circuit.
    noteECM and chassis control module have a termination circuits. Check other units first.
  4. Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom (Results from interview with customer)” are reproduced.
    noteAlthough unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
: Connect the connector. Check other units as per the above procedure.
: Replace the unit whose connector was disconnected.