Diagnosis Procedure

1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
   • ADAS control unit
   • Chassis control module

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair the terminal and connector.

1. Disconnect the connector of chassis control module.
2. Check the continuity between the chassis control module harness connector terminals.

   Chassis control module harness connector			Continuity
   Connector No.	Terminal No.
   E22	19	11	Existed
   	7	8	Existed

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Check the harness and repair or replace (if shield line is open) the root cause (chassis communication circuit side).

1. Disconnect the connector of ADAS control unit.
2. Check the resistance between the ADAS control unit harness connector terminals.

   ADAS control unit harness connector			Resistance (Ω)
   Connector No.	Terminal No.
   B1	8	9	Approx. 54 - 66

Is the measurement value within the specification?

YES 

GO TO STEP 4  .

NO 

Replace the body harness.

Check the power supply and the ground circuit of the ADAS control unit. Refer to DIAGNOSIS PROCEDURE .

Is the inspection result normal?

YES (Present error) 

Replace the ADAS control unit. Refer to REMOVAL AND INSTALLATION .

YES (Past error) 

Error was detected in the ADAS control unit branch line circuit (chassis communication circuit side).

NO 

Repair the power supply and the ground circuit.