Scheme 39
On-Board Diagnostic (OBD) Test Description
- The OBD test inspects the integrity and function of the DSC and outputs the results when requested by the specific tests.
- On-board diagnostic test also: Provides a quick inspection of the DSC usually performed at the start of each diagnostic procedure. Provides verification after repairs to ensure that no other faults occurred during service.
- The OBD test is divided into 3 tests
- Read/clear diagnostic results, PID monitor and record and active command modes.
Read/clear diagnostic results
- This function allows you to read or clear DTCs in the DSC HU/CM memory.
PID/Data monitor and record
- This function allows you to access certain data values, input signals, calculated values, and system status information.
Active command modes
- This function allows you to control devices through the M-MDS.
Reading DTCs Procedure
Scheme 40
- Connect the M-MDS to the DLC-2.
- After the vehicle is identified, select the following items from the initialization screen of the M-MDS. When using the IDS (laptop PC) Select "Self Test". Select "Modules". Select "ABS". When using the PDS (Pocket PC) Select "Module Tests". Select "ABS". Select "Self Test".
- Verify the DTC according to the directions on the screen. If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.
- After completion of repairs, clear all DTCs stored in the DSC. (See «CLEARING DTCS PROCEDURES»(ref-367645-S11976887742010072700000) .)