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Fiat Grande Punto Factory Service Manual (2005-2012)22 · Fault diagnosis
22 · Diagnostics

Electric fan comes on too often

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Engine › Electric fan comes on too often
Fault diagnosisElectric fan comes on too often

ELECTRIC FAN COMES ON TOO OFTEN

1.2 8v, 1.4 8v, 1.3 Multijet, 1.9 Multijet

The cooling fan comes on at a higher frequency than usual taking the ambient and driving conditions into account.

Results of the tests
0PRELIMINARY CHECKSAll OKProblems encounteredOperation

First, check:

- The level of the engine coolant fluid;

- The cleanliness and condition of the radiator

Move on to Step 1

1. Engine coolant fluid level insufficient

2. Radiator dirty, damaged or distorted

1. Top up the engine coolant fluid level. If the problem persists, continue as instructed below,

See table X10 ENGINE COOLANT LEAKS

2. Clean the radiator. If necessary, replace it

Op. 1088B20 ENGINE COOLING RADIATOR - R + R

1ENGINE OIL LEVEL CHECKAll OKProblems encounteredOperation
Check the engine oil levelMove on to Step 2Insufficient engine oil levelTop up to the correct engine oil level
2TANK CAP CHECKAll OKProblems encounteredOperation
Check the condition of the expansion tank and, in particular, the seal of the capMove on to Step 3Cap faultyRepair or replace the cap
3TEMPERATURE GAUGE OPERATION CHECKAll OKProblems encounteredOperation
Connect the diagnostic equipment (Examiner or other instrument) to the diagnostic socket (in the engine management control unit ambient): read the value of the engine temperature between the parameters and compare it with the instrument readingMove on to Step 4Values not consistent: gauge faulty

Continue as instructed,

See table K026 ENGINE COOLANT OVERHEATING WARNING LIGHT NOT WORKING

4COOLANT TEMPERATURE SENSOR CHECKAll OKProblems encounteredOperation

For the 1.2 8v, 1.4 8v;

Check the operation of the engine coolant temperature sensor,

See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK

End of diagnosis

1. Sensor faulty

2. Connections not correct

3. Engine management control unit faulty

1. Replace the temperature sensor

2. Restore the connections

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

3. Check the control unit thoroughly (using the diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine management control unit

4COOLANT TEMPERATURE SENSOR CHECKAll OKProblems encounteredOperation

For the 1.3 JTD 16v 75 Cv, 1.3 JTD 16v 90 Cv, 1.9 JTD 8v;

Check the operation of the engine coolant temperature sensor,

See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK

End of diagnosis

1. Sensor faulty

2. Connections not correct

3. Engine management control unit faulty

1. Replace the temperature sensor

Op. 1060G14 ENGINE COOLANT TEMPERATURE SENSOR - R.R.

2. Restore the connections

See E5030 PETROL ENGINES ELECTRONIC MANAGEMENT

3. Check the control unit thoroughly (using the diagnostic equipment - Examiner or other instruments) and, if necessary, replace the engine management control unit

Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - .R

Parts & tools for this job For 2005 Fiat Grande Punto

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