Diagnosis Procedure

Check the root cause circuit that detected with CAN diagnosis function of CONSULT.

Branch Line

GO TO 2.

Short Circuit

GO TO 3.

Check a branch line circuit for applicable ECU. Refer to following.

INSPECTION END

1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of CAN gateway for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?

YES

GO TO 4.

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 5.

NO

Check the harness and repair or replace the root cause.

1. Disconnect all the unit connectors on multifunction media CAN communication circuit.
2. Check the continuity between the CAN gateway harness connector terminals.

   CAN gateway harness connector			Continuity
   Connector No.	Terminal No.
   M218	20	19	Not existed

Is the inspection result normal?

YES

GO TO 6.

NO

Check the harness and repair or replace the root cause.

Check the continuity between the CAN gateway harness connector and the ground.

Is the inspection result normal?

YES

GO TO 7.

NO

Check the harness and repair or replace the root cause.

1. Remove the CAN gateway.
2. Check the resistance between the CAN gateway terminals.

   CAN gateway		Resistance (Ohm)
   Terminal No.
   20	19	Approx. 108 - 132
   9	3	Approx. 108 - 132

Is the measurement value within the specification?

YES

GO TO 8.

NO

Replace the CAN gateway. Refer to Removal and Installation .

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

Inspection result

Reproduced

GO TO 9.

NO

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 multifunction media CAN communication circuit.
   NOTE: CAN gateway 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.

NO

Replace the unit whose connector was disconnected.