What causes intermittent ABS issues in a Peugeot 307?
1 Answers
Possible causes include problems with the ABS wheel speed sensor, ABS wiring connection faults, ABS control unit (ECU) programming issues, or ABS master cylinder problems. Here are the detailed explanations: 1. ABS wheel speed sensor issues: The wheel speed sensors are located on the wheels and are easily contaminated by dirt or mud. Heavy contamination on the sensors can affect the transmission of speed signals, causing the ABS computer to fail in reading the signals and trigger a warning. In such cases, cleaning the dirt from the sensors and adjusting the gap between the sensor and the signal ring can resolve the issue. If the wheel speed sensor is damaged, replacement is necessary. 2. ABS wiring connection faults: This is also a relatively common issue. While all vehicles are equipped with ABS systems, the assembly quality and materials can vary due to different manufacturing processes. Loose connections of the wheel speed sensor wiring are frequent problems and should be prioritized during inspection. 3. ABS control unit (ECU) programming issues: It is likely that the data within the control unit is mismatched or incorrect, requiring data recalibration. This task requires a specialized diagnostic computer. If the ABS control unit (ECU) circuit board is faulty, the computer needs to be replaced.
