Test results
1
COMPONENT CONCERNED
ELECTRICAL CONNECTIONS CHECK
OK (NO FAULTS DETECTED)
FAULT DETECTED
OPERATION
Connections on throttle body and engine management control unit
Check for loose electrical connections at the throttle body connector and at the engine management control unit.
Go to Step 2
Presence of loose electrical connections.
Restore the correct connections.
2
CHECK THROTTLE BODY WIRING
Throttle body wiring
Check for the presence of a short circuit to earth in the wiring from throttle body to engine management control unit
Go to Step 3
Presence of short circuit to earth
Restore correct insulation to earth
3
Check for the presence of a short circuit to Vbatt in the wiring from throttle body to engine management control unit
Go to Step 4
Presence of short circuit to Vbatt.
Restore correct insulation to +battery
4
Check for the presence of an open circuit in the wiring from throttle body to engine management control unit
End of diagnosis
Presence of open circuit
Restore the correct continuity