DLC Data Link Connector

The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

Symbols

Terminal No.

Names

Reference terminals

Results

Conditions

SIL

7

Bus "+" line

5 - Signal ground

Pulse generation

During transmission

CG

4

Chassis ground

Body ground

1 Q or less

Always

SG

5

Signal ground

Body ground

1 Q or less

Always

BAT

16

Battery positive

Body ground

9 to 14 V

Always

CANH

6

CAN "High" line

CANL

54 to 69 Q

Ignition switch OFF

CANH

6

CAN "High" line

Battery positive

1 MQ or higher

Ignition switch OFF

CANH

6

CAN "High" line

CG

1 kQ or higher

Ignition switch OFF

CANL

14

CAN "Low" line

Battery positive

1 MQ or higher

Ignition switch OFF

CANL

14

CAN "Low" line

CG

1 kQ or higher

Ignition switch OFF

HINT:

The DLC3 is the interface prepared for reading various data from the vehicle's ECM. After connecting the cable of an intelligent tester, turn the ignition switch ON and turn the tester ON. If a communication failure message is displayed on the tester screen (on the tester: UNABLE TO CONNECT TO VEHICLE), a problem exists in either the vehicle or tester. In order to identify the location of the problem, connect the tester to another vehicle. If communication is normal: Inspect the DLC3 on the original vehicle.

If communication is impossible: The problem is probably with the tester itself. Consult the Service Department listed in the instruction manual.

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