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Home >> Lexus >> 2003 >> ES 300 V6-3.0L (1MZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Check Data Link Connector 3 (DLC3)
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Check Data Link Connector 3 (DLC3)

CHECK THE DLC3




The vehicle's ECM uses the ISO 9141-2 for communication protocol. The terminal arrangement of DLC3 complies with SAE J1962 and matches the ISO 9141-2 format.

HINT:
If the display shows UNABLE TO CONNECT TO VEHICLE when the cable of the OBD II scan tool or the hand-held tester is connected to the DLC3, the ignition switch is turned ON and the scan tool is operated, there is a problem either on the vehicle side or tool side.
- If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
- If communication does not function 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.
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