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ON-BOARD DIAGNOSTIC OUTLINE [ELECTRONIC 4WD CONTROL SYSTEM]

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• The on-board diagnostic function allows for detecting malfunctions in the input/output signals when the ignition key is at the ON position.
• The DLC-2, which combines the failure detection and detection maintenance connectors, has been adopted to improve serviceability. By connecting a WDS or equivalent to the DLC-2, malfunction diagnosis can be carried out.
• Using a WDS or equivalent DTCs can be retrieved or erased, depending on the screen display, thus improving serviceability.

## Block Diagram

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1 | Input part
2 | Regular control area
3 | Output part
4 | Fail-safe function
5 | Failure detection function
6 | Memory function
7 | Failure display function
8 | External tester communication function
9 | Failure diagnosis function
10 | 4WD warning light
11 | DLC-2
12 | CAN
13 | WDS or equivalent