Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 1069
DME 7.8 DME 7.8 0 · 0-192P1577
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DME 7.8 DME 7.8 0
0-192P1577
427 Accelerator pedal position sensor 1 - signal
implausible
Diagnosis conditions
• Ignition on (approx. 30 sec.)
• Battery voltage greater than 7 V
Possible fault cause
♦Pedal sensor
Affected terminals
-
Note!
♦The system operates in pedal sensor standby mode, i.e. the
angle of the accelerator pedal is calculated from the residual
position sensor signal.
♦The maximum pedal value is limited to 30 %.
♦The dynamic is limited.
Diagnosis/troubleshooting
Work instruction Display OK If not OK
1 Replace pedal sensor → End → End
427 Accelerator pedal position sensor 1 - below limit
Diagnosis conditions
• Ignition on (approx. 30 sec.)
• Battery voltage greater than 7 V
Possible fault cause
♦Short circuit to ground
♦Pedal sensor
2078 P1577 0-192 page 1
Printed in Germany, 2000 p1577
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