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).
   • Display control unit
   • CAN gateway

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair the terminal and connector.

1. Disconnect the connector of CAN gateway.
2. Check the continuity between the CAN gateway harness connector terminals.

   CAN gateway harness connector				Continuity
   Connector No.	Terminal No.	Connector No.	Terminal No.
   M218	20	M217	9	Existed
   	19		3	Existed

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Check the harness and repair the root cause (Multifunction media CAN communication circuit).

1. Connect the connector of CAN gateway.
2. Disconnect the connector of display control unit.
3. Check the resistance between the display control unit harness connector terminals.

   Display control unit harness connector			Resistance (Ω)
   Connector No.	Terminal No.
   M52	59	47	Approx. 54 - 66

Is the measurement value within the specification?

YES 

GO TO STEP 4  .

NO 

Repair the display control unit branch line.

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

Is the inspection result normal?

YES (Present error) 

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

YES (Past error) 

Error was detected in the display control unit branch line.

NO 

Repair the power supply and the ground circuit.