Brake Pedal Position Sensor, Faulty Signal. Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking components and wiring
Check the resistance of the brake pedal position sensor between terminals #2 and #4. For resistance values see Component specifications Specifications.
Check the signal cable between engine control module (ECM) terminal #B16 and brake pedal sensor terminal #2. Check for a short-circuit to ground. Check for an open-circuit.
Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box, B5234T9, B5244T7 Connecting The Breakout Box
- For information about signals, see Signal specification Signal Specifications
- Checking wiring and terminals Checking Wiring and Terminals
- With the ignition on and the brake pedal sensor connector disconnected, the voltage between brake pedal sensor terminal #1 (engine control module (ECM) side) and ground must be approximately 5 V.














Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.




- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Read off brake pedal movement by pressing down and releasing brake pedal.
The value is between 2.9-3.2 V when the brake pedal is unaffected and decreases when the brake pedal is depressed.









Do the movements correspond?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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