CONSULT/GST Data Link Connector (DLC) Circuit
INSPECTION PROCEDURE
If the CONSULT/GST cannot diagnose the system properly, check the following items.
|
Symptom
|
Check item
|
|
CONSULT cannot access any system.
|
- CONSULT DLC power supply circuit (Terminal 8 and 16) and ground circuit (Terminal 4 and 5)
- Check the power supply and ground circuit of 3CH CAN gateway or 6CH CAN gateway.
Refer to Diagnosis Procedure
.
Refer to Diagnosis Procedure.
- Check the data link connector branch line circuit.
Refer to Diagnosis Procedure
.
- Check the diagnostic CAN communication circuit.
Refer to Diagnosis Procedure
.
- If above inspection results are normal, replace 3CH CAN gateway or 6CH CAN gateway.
Refer to 3CH CAN GATEWAY : Removal & Installation
.
Refer to 6CH CAN GATEWAY : Removal & Installation.
|
|
CONSULT cannot access individual system. (Other systems can be accessed.)
|
- Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring diagram for each system.)
- Open or short circuit between the system and CONSULT DLC (For detailed circuit, refer to wiring diagram for each system.)
- Open or short circuit CAN communication line. Refer to Trouble Diagnosis Flow Chart
.
|
NOTE:
The DDL1 and DDL2 circuits from DLC pins 12, 13, 14 and 15 may be connected to more than one system. A short in a DDL circuit connected to a control unit in one system may affect CONSULT access to other systems.If the GST cannot operate properly, check the circuit based on the information of SAE J1962 and ISO 15031-3.