145 - MiTo   1.4 16v TJet   Modulo Controllo Motore (ECM) - Segnale non valido   U1701-86   
 

 

 

 

Test results
 

1

  

COMPONENT CONCERNED

  

CHECK WIRING BETWEEN TYRE PRESSURE CONTROL UNIT AND ENGINE MANAGEMENT CONTROL UNIT

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Wiring between tyre pressure control unit and engine management control unit

  

Check that the CAN connections between the tyre pressure control unit and the engine management control unit are not faulty. In particular, check that there are no open circuit or short circuit problems.

  

Go to Step 2

  

There are faulty connections

  

Restore or, if necessary, replace the wiring
 

2

  

COMPONENT CONCERNED

  

ENGINE MANAGEMENT CONTROL UNIT CONNECTION CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Engine management control unit connections

  

Disconnect/reconnect the engine management control unit connectors and check for a loose pin

  

Go to Step 3

  

Presence of a loose pin

  

Restore the correct operation of the connector
 

3

  

COMPONENT CONCERNED

  

TYRE PRESSURE CONTROL UNIT CONNECTION CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Tyre pressure control unit connections

  

Disconnect/reconnect the tyre pressure control unit connectors and check for the presence of loose pins

  

Go to Step 4

  

Presence of a loose pin

  

Restore the correct operation of the connector
 

4

  

COMPONENT CONCERNED

  

ENGINE MANAGEMENT CONTROL UNIT SUPPLY CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Engine management control unit power supply

  

Check that the power supply for the engine management control unit is correct

  

Go to Step 5

  

Power supply not correct

  

Restore the correct power supply
 

5

  

COMPONENT CONCERNED

  

TYRE PRESSURE CONTROL UNIT SUPPLY CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Tyre pressure control unit supply

  

Check that the power supply for the tyre pressure control unit is correct

  

Go to Step 6

  

Power supply not correct

  

Restore the correct power supply
 

6

  

COMPONENT CONCERNED

  

ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Engine management control unit

  

Check that the engine management control unit is working correctly

  

Go to Step 7

  

Engine management control unit not working properly

  

Replace the engine management control unit
 

7

  

COMPONENT CONCERNED

  

TYRE PRESSURE CONTROL UNIT OPERATION CHECK

  

OK (NO FAULTS DETECTED)

  

FAULT DETECTED

  

OPERATION
 

 

Tyre pressure control unit

  

Check that the tyre pressure control unit is operating correctly

  

End of diagnosis

  

Tyre pressure control unit not operating correctly

  

Replace the tyre pressure control unit

 Op. 4450B91 TPMS SYSTEM CONTROL UNIT R R