Diagnostic Trouble Code (DTC) Information CEM-8F21

Condition 

Fig 1: Identifying Wiper Motor Module (WMM)

Courtesy of VOLVO CARS CORPORATION

The wiper motor module (WMM) checks the windshield wipers.

The diagnostic trouble code (DTC) is stored if the wiper motor module (WMM) registers an internal fault.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• None.

Possible Source 

• Internal fault
• Damaged wiper motor module (WMM).

Fault symptom[s] 

• The windshield wipers are not working.