ON-BOARD DIAGNOSTIC SYSTEM OUTLINE (DYNAMIC STABILITY CONTROL)


BHE040243000T01

• The on-board diagnostic system consists of a malfunction detection system that detects abnormalities in input/output signals when the ignition switch is at the ON position, a data monitor function that reads out specified input/output signals and a simulation function that allows for override operation of output parts (such as solenoid valves).

• The data link connector 2 (DLC-2), which groups together all the connectors used for malfunction diagnosis and detecting/repair into a single location, has been adopted, thereby improving serviceability. Diagnosis is performed by connecting the WDS or equivalent to the DLC-2.

• In addition to DTC read-out, the WDS or equivalent is used to clear DTCs using the display screen of the diagnostic tester, and to access the PID/data monitor and simulation functions, providing enhanced malfunction diagnosis and improved serviceability.

Block Diagram

1
DSC indicator light
2
DSC OFF light
3
ABS warning light
4
Brake system warning light
5
Malfunction indication function
6
On-board diagnosis function
7
Serial communication
8
Memory function
9
Malfunction detection function
10
PID/data monitor function
11
Active command modes function
12
Fail-safe function
13
Hydraulic unit inspection function
14
Input devices
15
Normal control area
16
Output devices
17
WDS or equivalent