145 - MiTo   1.4 16v TJet   Main relay   P0685   


NO SIGNAL

 

 

 

Test results

 

1

 

ELECTRICAL CONNECTIONS CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check for loose electrical connections at the relay and at the engine management control unit.

 

Go to Step 2

 

Presence of loose electrical connections.

 

Restore the correct connections.

 

2

 

WIRING CONTINUITY CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check for breaks in the wiring continuity

 

Go to Step 3

 

Breaks in the wiring continuity.

 

Restore the correct continuity for the wiring.

 

3

 

WIRING INSULATION CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check the condition of the wiring insulation

 

Go to Step 4

 

Wiring insulation faulty.

 

Restore correct wiring insulation.

 

4

 

RELAY OPERATION CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check that the relay is working properly.

 

Go to Step 5

 

Relay not working properly.

 

Replace the relay.

 

5

 

ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check that the engine management control unit is working properly.

 

End of diagnosis

 

Engine management control unit faulty.

 

Replace the engine management control unit

 Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

SIGNAL NOT VALID

 

 

 

Test results

 

1

 

ELECTRICAL CONNECTIONS CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check for loose electrical connections at the relay and at the engine management control unit.

 

Go to Step 2

 

Presence of loose electrical connections.

 

Restore the correct connections.

 

2

 

WIRING CONTINUITY CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check for breaks in the wiring continuity

 

Go to Step 3

 

Breaks in the wiring continuity.

 

Restore the correct continuity for the wiring.

 

3

 

RELAY OPERATION CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check that the relay is working properly.

 

Go to Step 4

 

Relay not working properly.

 

Replace the relay.

 

4

 

ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK

 

All OK

 

Problems encountered

 

Operation

 

 

Check that the engine management control unit is working properly.

 

End of diagnosis

 

Engine management control unit faulty.

 

Replace the engine management control unit

 Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R