LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0571-Brake Switch 1 Performance >> Code Description >> Theory of Operation

Theory of Operation

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic is designed to detect a faulty brake switch. The algorithm starts to run when the operator is driving above 30 mph (48 kmh) for more than five minutes. If after that time vehicle speed drops to below 2 mph (3 kmh) and the Powertrain Control Module (PCM) does not detect brake activity the diagnostic will fail. The PCM will turn on the ETC lamp immediately after the diagnostic runs and fails.

scientia non olet · About LEMON Manuals