LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Alfa Romeo >> 2017 >> 4C Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> (Body Control Module (BCM) - Electrical Diagnostics) >> DTC Troubleshooting >> B12CB-23 CSM (Column Switch Module) Resume/Up/Down Commands-Signal Stuck Low >> Diagnostic Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • Test complete.
  2. CHECK THE CRUISE CONTROL SWITCH OPERATION 
    1. With the scan tool, check that the Cruise Control Switch is working properly.

      Does the Cruise Control Switch work properly?

      Yes 

      • End of diagnosis.

      No 

scientia non olet · About LEMON Manuals