P1253
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE lights up straight away.
Throttle control in limp-home mode.
Incorrect idle speed.
Cruise control inoperative.
Throttle Motor. Full PWM in Open Direction During Cranking.
Fault symptoms
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CHECK ENGINE lights up straight away.
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Throttle control in limp-home mode.
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Cruise control inoperative.
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Conditions
The following conditions apply for this DTC:
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Crankshaft is rotating but motor has not yet started.
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Main relay voltage exceeds 5 V.
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Throttle motor is receiving 100 % PWM in opening direction.
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Diagnostic help
A mechanical or electrical fault is preventing the throttle from opening during starter motor cranking. The main relay voltage supplied to the control module is OK.
Diagnostic tool functions related to this fault are:
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Activation of output for throttle motor.
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See also the description of activating functions under ”Fault diagnosis, general” for more information.
Check the wiring
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Note
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Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.
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