Checking Components And Wiring

HINT: This diagnostic trouble code (DTC) can be stored if a battery charger with too high charge voltage has been connected. 

Check the generator (GEN) brushes (carbon). Check that the brushes can move in the regulator housing. The brushes are lightly sprung. Also check the slip rings.

If the brushes and slip rings appear to be OK, try a new alternator control module (ACM) (charge regulator).

HINT: Another test to check the alternator's function is to perform Quicktest of alternator function. Found in VIDA vehicle communication under Central electronic module (CEM). VIDA is Volvo scan tool. 

Remedy as necessary.

Other information 

• see CHARGE REGULATOR
• see GENERATOR
• see CHECKING WIRING AND TERMINALS

Refer to VERIFICATION