Diagnostic Functions

Diagnostic functions

Overview
See Overview. System Overview

Misfire diagnostic
See Misfire diagnostics Misfire Diagnostics.

Camshaft diagnostics (CVVT)
See Camshaft diagnostics (CVVT) Camshaft Diagnostics (CVVT).

Leak diagnostics (certain markets only)
To minimize false detection of leakage, new software has been released for the Engine control module (ECM). The software has been released afterwards, in order of priority, started at the end of 2006.
To check the current software version, see Vehicle communication in VIDA.
The improved software version makes diagnostics more robust and durable against aging and wear of the leak diagnostic unit. It affects strategies, behavior and to a degree also read off parameters.
- Leak diagnostics, original version (-2004) Leak Diagnostics, Original Version
- Leak diagnostics, original version (2005-) Leak Diagnostics, Original Version
- Leak diagnostics, improved version (2002-) Leak Diagnostics, Improved version

Heated oxygen sensor (HO2S) diagnostic
See Heated oxygen sensor (HO2S) diagnostic Heated Oxygen Sensor (HO2S) Diagnostic.

Three-way catalytic converter (TWC) diagnostics
See Catalytic converter diagnostic Catalytic Converter (TWC) Diagnostic.

Fuel pressure regulation, diagnostics (only vehicles with demand controlled fuel pumps)
See Fuel pressure regulation, diagnostics Fuel Pressure Regulation, Diagnostics.

Oil level sensor, diagnostics (2004-, certain markets and models only)
See Oil level sensor, diagnostics Testing and Inspection.