Pulse Width Modulation (PMW) Signal Too High

Pulse width modulation (PWM) signal too high

Checking the status




- Ignition on.
Check whether the fault is permanent or intermittent by reading off the signals from the accelerator pedal (AP) position sensor.
Check that the value for both signals is approximately 8% when the accelerator pedal (AP) is unaffected and approximately 82% when the pedal is fully depressed.
The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.










Continue - Checking the component and wiring

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Checking the component and wiring
Check the signal cable between Engine control module (ECM) #B25 (#B35) and accelerator pedal position sensor #2. Check the cable for short-circuit to ground.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box
- Signal specification Signal Description / Specification
- Accelerator pedal (AP), replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals






Continue - Verification

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Verification




Verification

Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the read off of the signals from the accelerator pedal (AP) position sensor.
Check that the value for both signals is approximately 8% when the accelerator pedal (AP) is unaffected and approximately 82% when the pedal is fully depressed.





Do the values 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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the status

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