C107D Jeep Grand Cherokee - Brake Pedal Switch 1/2 Correlation | Step-by-Step Diagnosis

C107D (Brake Pedal Switch 1/2 Correlation) on a Jeep Grand Cherokee? This video walks through the complete 7-step factory diagnostic procedure with the wiring diagram and connector views - no guesswork, no parts cannon. When monitored: When the vehicle is driven. Set condition: If the Anti-Lock Brakes Module detects an implausible signal from the Stop Lamp Switch. In this video: 1. Verify The Diagnostic Trouble Code (DTC) Is Active 2. Inspect Related Wiring Harness, Terminals, & Connectors 3. Check (b15) Secondary Brake Switch Signal Circuit (diesel) Or (b15) Brake Switch No. 1 Signal Circuit (gas) Function While Depressing And Releasing The Brake Pedal 4. Check (b15) Secondary Brake Switch Signal Circuit (diesel) Or (b15) Brake Switch No. 1 Signal Circuit (gas) For A Short To Ground 5. Check (b15) Secondary Brake Switch Signal Circuit (diesel) Or (b15) Brake Switch No. 1 Signal Circuit (gas) For An Open 6. Check (b15) Secondary Brake Switch Signal Circuit (diesel) Or (b15) Brake Switch No. 1 Signal Circuit (gas) For A Open Ground 7. Check Brake Pedal Adjustment Applies to the Jeep Grand Cherokee third generation (WK, 2005-2010) with the 3.7L V6, 4.7L V8 and 5.7L HEMI V8 (and SRT-8 6.1L). Much of the diagnostic logic is shared with the related Jeep Commander (XK) of the same era. This is general information for educational purposes - always confirm against the service information for your exact vehicle.