Diagnostic Trouble Code (DTC) Information CEM-9C02

Condition 

Fig 1: Identifying Ignition Switch

Courtesy of VOLVO CARS OF NORTH AMERICA.

When the vehicle is unlocked, the interior lighting and the lighting around the ignition switch light up.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) detects a short-circuit to ground in the supply cable for the lighting ring.

The diagnostic trouble code (DTC) can be diagnosed when the interior lighting is active.

Substitute Value 

• If the fault has been detected in 100 ignition cycles, the output is closed permanently until the diagnostic trouble code is erased (applies from structure week 200539).

Possible Source 

• Short-circuit to ground in the light ring around the ignition switch.

Fault symptom[s] 

• None.