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P174C – Valve 1 In Sub-gearbox 2 (Electrical Fault)
Brake fluid leaking from the ABS pump unit
Fault code would be along the lines of Crash Data
Communication issues or fault codes relating to speed signal processing
Bench test for consistent function before return
Indicator Bypass - on Instrument cluster C300 P174C – Valve 1 InIn some clusters, weve observed backlighting failures caused not by the LEDs themselves, but by a failed processor output inside the instrument cluster. Interestingly, the manufacturers have designed these systems so the illumination signal enters the cluster as a digital high low input, which is then processed before driving the LEDs. When the processor output fails, it cant complete the circuit, even though the input signal is perfectly fine. To
