312000560 - D011 ENGINE IDLING HIGH

The customer complains that: The engine idle speed has increased
Test results
1CAN CHECKSAll OKProblems encounteredOperation
Connect an EXAMINER and check the following on CAN INFORMATION:No faulty control unitsNo faulty CANMove on to Step 2Presence of errorsContinue as instructed by the diagnostic equipment
2MODE PARAMETERS CHECKAll OKProblems encounteredOperation
Connect using the Examiner in the engine control unit.

Check the value of the following parameters:

  • Battery voltage
  • Accelerator pedal
  • Accelerator position 1 AD/C
  • Accelerator position 2 AD/C
  • Engine coolant temperature by carrying out the
    See Test 1056BC ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK
Move on to Step 31. Battery voltage not correct2. Alternator defective3. Accelerator pedal potentiometer defective4. Coolant temperature sensor defective1. Charge, and if necessary replace, the battery2. Replace the alternator, if defective    Op. 5530A14 ALTERNATOR - R+R FOR VERSIONS WITH AIR CONDITIONOMG 3. Replace the accelerator pedalOp. 1068A14 4. Replace the coolant temperature sensorOp. 1056B50
3MOTORIZED THROTTLE CHECKAll OKProblems encounteredOperation
Check that the motorized throttle is working properly, carrying out    See Test 1056BW THROTTLE BODY ACTUATOR OPERATION CHECKCheck the continuity of the wiring between the engine control unit and the motorized throttle    See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT End of diagnosis1. Motorized throttle defective2. Wiring defective1. Replace the motorized throttleOp. 1056B14 2. Restore correct wiring