Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Mercedes Benz ML430FACTORY OEM SERVICE PROCEDURE
Pedal Value Sensor (B37)
- Pedal Value Sensor (Signal 1) - Connect DVOM between ME-SFI control module connector "C" terminals No. 23 and 24 (socket box terminals No. 15 and 16). Turn ignition on. With throttle closed, voltage should be .2-.5 volts. With throttle at Wide Open Throttle (WOT), voltage should be 4.3-4.8 volts. If voltage is within specification, go to next step. If voltage is not within specification, possible causes are voltage supply problem to pedal value sensor (B37), wiring harness failure or pedal value sensor (B37) defective. Repair as necessary. To check voltage supply to pedal value sensor, go to next step.
- Pedal Value Sensor, Voltage Supply - Connect DVOM between ME-SFI control module connector "C" terminals No. 23 and 22 (socket box terminals No. 15 and 14). Turn ignition on. Voltage should be 4.75-5.25 volts. If voltage is okay, go to next step. If voltage is not okay, possible causes are wiring harness failure or ME-SFI control module (N3/10) defective. Repair as necessary.
- Pedal Value Sensor (Signal 2) - Connect DVOM between ME-SFI control module connector "C" terminals No. 26 and 25 (socket box terminals No. 18 and 17). Turn ignition on. With throttle closed, voltage should be .1-.4 volts. With throttle at Wide Open Throttle (WOT), voltage should be 2.1-2.5 volts. If voltage is within specification, go to next step. If voltage is not within specification, possible causes are voltage supply problem to pedal value sensor (B37), wiring harness failure or pedal value sensor (B37) defective. Repair as necessary. To check voltage supply to pedal value sensor, go to next step.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.