22 · Diagnostics

Engine idling high

Fault diagnosisEngine idling high

ENGINE IDLING HIGH

1.9 JTD 8v, 1.9 JTD 16v, 2.4 JTD 20v

The customer complains of: The engine idle speed has increased

		Test results
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit. Check the value of the following parameters: . Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK . Accelerator pedal . Accelerator position 1 AD/C . Accelerator position 2 AD/C See Test 1068AC ACCELERATOR PEDAL CHECKS . Air temperature in the intake manifold See Test 1064BD SUPERCHARGING TEMPERATURE CHECK . Engine coolant temperature See Test 1060OE CHECK ON OPERATION OF COOLANT TEMPERATURE SENSOR . Engine rpm See Test 1060GI ENGINE SPEED CHECK . Target Diesel pressure . Measured Diesel pressure See Test 1060GH DIESEL FUEL PRESSURE CHECK	End of diagnosis

Test results

AMBIENT PARAMETERS CHECK

All OK

Problems encountered

Operation

Select the following control unit at the diagnostic equipment: EDC16C39 Diesel electronic injection control unit.

Check the value of the following parameters:

. Battery voltage

. Accelerator pedal

. Accelerator position 1 AD/C

. Accelerator position 2 AD/C