Diagnosis Procedure

1. Turn the ignition switch OFF.
2. Disconnect the 12V battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
   • Harness connector T27
   • Harness connector B35
   • Harness connector B18
   • Harness connector M19

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair the terminal and connector.

1. Disconnect the following harness connectors.
   • ADAS control unit
   • Harness connectors T27 and B35
2. Check the continuity between the ADAS control unit harness connector and the harness connector.

   ADAS control unit harness connector		Harness connector		Continuity
   Connector No.	Terminal No.	Connector No.	Terminal No.
   T18	8	T27	2	Existed
   	9		3	Existed

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Replace the tail harness.

1. Disconnect the harness connectors B18 and M19.
2. Check the continuity between the harness connector terminals.

   Harness connector		Harness connector		Continuity
   Connector No.	Terminal No.	Connector No.	Terminal No.
   B35	2	B18	84	Existed
   	3		85	Existed

Is the inspection result normal?

YES 

GO TO STEP 4  .

NO 

Repair the main line between the harness connectors B35 and B18.

1. Disconnect the harness connectors M135 and R22.
2. Check the continuity between the harness connectors terminals.

   Harness connector		Harness connector		Continuity
   Connector No.	Terminal No.	Connector No.	Terminal No.
   M19	84	M135	12	Existed
   	85		32	Existed

Is the inspection result normal?

YES (Present error) 

Check CAN system type decision again.

YES (Past error) 

Error was detected in the main line between the ADAS control unit and the lane camera unit.

NO 

Repair the main line between the harness connectors M19 and lane camera unit.