Diagnosis Procedure
- CHECK HARNESS CONNECTOR CONNECTION
Check the following harness connector for disconnection or looseness.
- CAN gateway
Is the inspection result normal?
YES
GO TO 2.
NO
Securely connect the harness connectors.
- CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit for CAN gateway. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace the malfunctioning part.
- CHECK CIRCUIT (SHORT TO BATTERY)
- Turn ignition switch OFF.
- Disconnect the following unit connectors.
- CAN gateway
- Check voltage between data link connector and ground.
Terminals
Voltage
(Approx.)
+
-
Data link connector
Ground
Connector
Terminal
M43
13
--
0 V
12
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace harness.
- CHECK CIRCUIT (SHORT TO GROUND)
Check continuity between data link connector and ground.
Data link connector
Ground
Continuity
Connector
Terminal
M43
13
--
Not existed
12
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace harness.
- CHECK CIRCUIT (SHORT WITH CAN-H AND CAN-L)
Check continuity between data link connector terminals.
Data link connector
Continuity
Connector
Terminal
Connector
Terminal
M43
13
M43
12
Not existed
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace harness.
- CHECK CIRCUIT (OPEN)
Check continuity between the following unit harness connectors.
- Data link connector
- CAN gatewayData link connector - CAN gateway
Data link connector
CAN gateway
Continuity
Connector
Terminal
Connector
Terminal
M43
13
M218
24
Existed
12
23
Is the inspection result normal?
YES
INSPECTION END
NO
Repair or replace harness.