On-Board Diagnostics Test Description

ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS) ON-BOARD DIAGNOSIS

On-Board Diagnostic (OBD) Test Description

- The OBD test inspects the integrity and function of the EHPAS and outputs the results when requested by the specific tests.
- On-board diagnostic test also:

- Provides a quick inspection of the EHPAS 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 2 tests:

- Read/clear diagnostic results, PID monitor and record.

Read/clear diagnostic results

- This function allows reading or clearing of DTCs in the EHPAS CM memory.

PID/Data monitor and record

- This function allows access of certain data values, input signals, calculated values, and system status information.