Data Link Connector: Description and Operation

DLC1



The DLC1 inside the engine compartment is used for engine adjustment.

DLC2



The DLC2 is provided inside the cabin (located under the left side instrument panel) as a connector exclusively for diagnosis of data from the engine, automatic transmission, ABS, A/C. Airbag and Cruise Control System to improve serviceability.
Connecting the following terminals of the DLC2 to terminal E1 selects the diagnosis mode shown below.

DLC2 Terminal ID:

Refer to the respective system for the inspection method.

HINT: By connecting the DLC2 up to a monitor specifically designed for use with the DLC2, the diagnosis result for each system can be read easily.

NOTICE: Never make a mistake with the terminal connection position as this will cause a malfunction.

DLC3

Data Link Connector 3 (DLC3):

The vehicle's ECM uses V.P.W. (Variable Pulse Width) for communication to comply with SAE J1850. The terminal arrangement of DLC 3 complies with SAE J1962 and matches the V.P.W. format.

Data Link Connector 3 (DLC3) Is Located Inside The Fuse Panel:

HINT: If your display shows "UNABLE TO CONNECT TO VEHICLE" when you have connected the cable of the OBDII scan tool or Toyota hand-held tester to DLC 3, turned the ignition switch ON and operated the scan tool, there is a problem on the vehicle side or tool side.
1. If communication is normal when the tool is connected to another vehicle, inspect DLC 3 on the original vehicle.
2. If communication is still not possible when the tool is connected to another vehicle, the problem is probably in the tool itself, so consult the Service Department listed in the tool's instruction manual.