Diagnostic Trouble Code (DTC) Information CEM-B108B23: Notes

Condition 

At the start button there are two switches to indicate the button's position. Switch 1 is directly connected to Central electronic module (CEM) and to Engine control module (ECM). Switch 2 gives a control signal to central electronic module (CEM) via serial communication (LIN). Both switches shall close when the start button is pressed in.

The diagnostic trouble code (DTC) is stored if the control module detects that:

• The input for the Central electronic module (CEM) indicates that switch 1 has not been activated for a long time at the same time as a start button push closes switch 2.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Pressing of start button.

Substitute Value 

• None.

Possible Source 

• Short-circuit to supply voltage in the signal cable.
• Open circuit on signal cable.
• Damaged switch.
• Internal error in the Start control module (SCU).

Fault symptom[s] 

• Steering column lock does not lock\unlock