Consult-II Data Link Connector (DLC) Circuit

Fig 1: Consult-II Display

Courtesy of NISSAN MOTOR CO., U.S.A.

CONSULT-II SYMPTOM CHART

Symptom	Check item
CONSULT-II cannot access any system.	CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). For detailed circuit, Refer to , "WIRING DIAGRAM " (4-cylinder) or , "WIRING DIAGRAM " (6-cylinder). CONSULT-II DLC cable and CONSULT-II CONVERTER.
CONSULT-II cannot access individual system. (Other systems can be accessed.)	CONSULT-II program card (Check the appropriate CONSULT-II program card for the system. Refer to "CHECKING EQUIPMENT ".) 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-II DLC (For detailed circuit, refer to wiring diagram for each system.) Open or short circuit in communication lines. Refer to , "PRECAUTIONS WHEN USING CONSULT-II ".

Symptom

Check item

CONSULT-II cannot access any system.

CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). For detailed circuit, Refer to , "WIRING DIAGRAM " (4-cylinder) or , "WIRING DIAGRAM " (6-cylinder).
CONSULT-II DLC cable and CONSULT-II CONVERTER.

CONSULT-II cannot access individual system. (Other systems can be accessed.)

CONSULT-II program card (Check the appropriate CONSULT-II program card for the system. Refer to "CHECKING EQUIPMENT ".)
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-II DLC (For detailed circuit, refer to wiring diagram for each system.)
Open or short circuit in communication lines. Refer to , "PRECAUTIONS WHEN USING CONSULT-II ".

NOTE: The preceding schematic is an example and may not be a true representation of the vehicle. The actual DDL1 circuits (CAN lines) from DLC pins 6 and 14 as well as the DDL2 circuits 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-II access to other systems.