Data Link Connector: Description and Operation

PURPOSE / OPERATION

DLC1

DLC1 Terminals:

The DLC1 inside the engine compartment is used for engine adjustment (ie. ignition timing check, idle speed check, etc).


DLC2



The DLC2 is provided inside the cabin (located dn~der the left side instrument panel) as a connector exclusively for diagnosis of data from the Engine, Automatic Transaxle, ABS, A/C, Airbag and Cruise Control System to improve serviceability.







Connecting the indicated terminals of the DLC2 to terminal E1 selects the diagnosis mode shown.

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

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.


DLC3

DLC3 Terminals:

The vehicle's ECM uses V.P.W. (Variable Pulse Width) for communication to comply with SAE J1850. The terminal arrangement of DLC3 complies with SAE J1962 and matches the V.P.W. format.




HINT: If your display shows "UNABLE TO CONNECT TO VEHICLE" when you have connected the cable of the OBD-II scan tool or Toyota hand-held tester to DLC3, 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 DLC3 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.