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DTC Diagnosis Procedure
1.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 2 communication circuit.
  4. Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?
.
Repair the terminal and connector.
 
2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the 8CH CAN gateway harness connector and the ECM harness connector.
8CH CAN gateway harness connectorECM harness connectorContinuity
Connector No.Terminal No.Connector No.Terminal No.
M167E16132Existed
6131Existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the 8CH CAN gateway harness connector terminals.
8CH CAN gateway harness connectorContinuity
Connector No.Terminal No.
M1676Not existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
4.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the 8CH CAN gateway harness connector and the ground.
8CH CAN gateway harness connectorGroundContinuity
Connector No.Terminal No.
M167Not existed
6Not existed
Is the inspection result normal?
.
Check the harness and repair the root cause.
 
5.CHECK TERMINATION CIRCUIT
  1. Remove the 8CH CAN gateway and the ECM.
  2. Check the resistance between the 8CH CAN gateway terminals.
    8CH CAN gatewayResistance (Ω)
    Terminal No.
    76Approx. 108 – 132
  3. Check the resistance between the ECM.
    ECMResistance (Ω)
    Terminal No.
    132131Approx. 108 – 132
Is the measurement value within the specification?
.
(ECM)Replace the ECM.
(8CH CAN gateway).
 
6.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.
 
7.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 communication 2 circuit.
    note8CH CAN gateway and ECM 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.
 
8.CHECK WARNING LIGHT
  1. Turn the ignition switch ON.
  2. Check the engine oil pressure warning light.
Is the inspection result normal?
INSPECTION END
Replace the 8CH CAN gateway.