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Home >> Volvo >> 2004 >> S40 L5-2.4L VIN 38 B5244S4 >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Diagnostic Functions
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Diagnostic Functions






Diagnostic functions

Overview
See Overview Overview.

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

Misfire diagnostic
See Misfire diagnostic Misfire Diagnostics.

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 Leak Diagnostics (Certain Markets Only)
- Leak diagnostics, improved version Leak Diagnostics, Improved Version (2004-)

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

Three-way catalytic converter (TWC) diagnostics
See Three-way catalytic converter (TWC) diagnostics Three-Way Catalytic Converter (TWC) Diagnostics.

Fuel pressure regulation, diagnostics
See Fuel pressure regulation, diagnostics Fuel Pressure Regulation, Diagnostics.

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