Checking the Electronic Throttle Module (ETM) and Software

Checking The Electronic Throttle Module (ETM) And Software







Check battery and charging system. This diagnostic trouble code (DTC) may be stored before the battery voltage becomes too low.

Check the electronic throttle module (ETM) connector. Check for contact resistance and oxidation.

Thoroughly check the throttle for dirt and sticking.
Check that no objects are blocking the throttle.
Check for dirt and sticking visually by pressing the throttle disc to change the angle.

HINT: Small objects can cause the throttle disc to jam momentarily, this can cause the diagnostic trouble code (DTC).

NOTE: A film of oil covering the throttle may be an indication that the nipple between the intake manifold and the flame trap needs to be cleaned. Always clean the nipple if the throttle is covered in a film of oil.

Read off the software number in the electronic throttle module (ETM) by clicking the VCT2000 symbol. Always check that the software number corresponds to the latest VOLVO software. See the service information for information about the latest software.

HINT: The diagnostic trouble code (DTC) may be the result of a faulty electronic throttle module (ETM). If the diagnostic trouble code (DTC) persists, despite the above checks and remedies, try a new electronic throttle module (ETM).

CAUTION: A new electronic throttle module (ETM) is delivered without software. For the electronic throttle module (ETM) to function after replacement, it must be programmed.

Other information:
- Checking wiring and terminals (See Related Tests and Information)
- To clean the electronic throttle module (ETM), see Throttle body (TB), cleaning
- To clean the nipple between the intake manifold and flame trap, see Crankcase ventilation, cleaning
- Select the software manager to download the software
- See other service information for the relevant action code
- To access or replace the electronic throttle module (ETM), see Throttle body (electronic throttle module (ETM), replacing
- To check the battery, see Fault-tracing and testing the battery.

Continue: Refer to Trouble Code Descriptions. Diagnostic Trouble Code Descriptions