Diagnosis Procedure

Check the CAN diagnosis results from CONSULT to see that the CAN communication circuit 1 and/or CAN communication circuit 2 have no malfunction.

Are the CAN communication 1 and/or CAN communication 2 circuits normal?

YES 

GO TO STEP 2  .

NO 

Check and repair CAN communication circuit 1 and/or CAN communication circuit 2.

1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on chassis communication circuit.
4. Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Repair the terminal and connector.

Check the continuity between the chassis control module harness connector.

Is the inspection result normal?

YES 

GO TO STEP 4  .

NO 

Check the harness and repair or replace [if shield line or fuse block (J/B) is short] the root cause.

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

Check the harness and repair or replace [if shield line or fuse block (J/B) is short] the root cause.

1. Remove the chassis control module.
2. Check the resistance between the chassis control module terminals.

   Chassis control module		Resistance (Ω)
   Terminal No.
   19	7	Approx. 108 - 132
   11	8	Approx. 108 - 132

Is the measurement value within the specification?

YES 

GO TO STEP 6  .

NO 

Replace the chassis control module.

Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced.

Inspection result

Reproduced 

GO TO STEP 7  .

Non - reproduced 

Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.

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 chassis communication circuit.
   NOTE:

   Chassis control module has two 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.
   NOTE:

   Although unit-related error symptoms occur, do not confuse them with other symptoms.

Inspection result

Reproduced 

Connect the connector. Check other units as per the above procedure.

Non - reproduced 

Replace the unit whose connector was disconnected.