For vehicles with data link connector 2 (DLC2)
- The DLC2 is provided inside the cabin (located under the left side of instrument panel) as a connector exclusively for diagnosis of data from the engine, automatic transmission, ABS, A/C, Airbag, Traction Control and Cruise Control System to improve serviceability.
- The DLC1 inside the engine compartment is used for engine adjustment.
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Connecting the following terminals of the DLC2 to terminal E 1 selects the diagnosis mode shown.
Never make a mistake with the terminal connection position as this will cause a malfunction.
Terminal Diagnosis Mode (System) TE1 Engine and automatic transmission (Normal mode) TE2 and TE1 Engine and automatic transmission (Test mode) TC ABS, A/C, Airbag, Traction Control and Cruise Control System TT Automatic transmission 
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Refer to the respective system for the inspection method.
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.
This guide is based on the book edition Toyota (RM502U, 1997)
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