Test results
1
COMPONENT CONCERNED
CHECK ON CONNECTIONS AT TURBOCHARGING SENSOR AND AT ENGINE MANAGEMENT CONTROL UNIT
OK (NO FAULTS DETECTED)
FAULT DETECTED
OPERATION
Connections on supercharging sensor and engine management control unit
Check for loose connections on the supercharging sensor and the engine management control unit
Go to Step 2
Presence of loose connections
Restore the correct connections
2
WIRING INSULATION CHECK
Supercharging sensor wiring
Check that the wiring is correctly insulated
Go to Step 3
Wiring insulation not correct
Restore the correct insulation for the wiring
3
WIRING CONTINUITY CHECK
Check the wiring correct continuity
Go to Step 4
Incorrect wiring continuity
Restore the correct continuity for the wiring
4
TURBOCHARGING AIR BY-PASS SOLENOID OPERATION CHECK
By-pass solenoid valve
Check that the turbocharging air by-pass solenoid is working properly
Go to Step 5
Solenoid valve not working properly
Replace the by-pass solenoid
Op. 1048B58 TURBOCHARGER AIR BY-PASS VALVE - R.R.
5
AIR SEEPAGE CHECK
Turbocharger – throttle body connection pipe
Check for the presence of air seepage in the pipe connecting the turbocharger to the throttle body.
End of diagnosis
Presence of air seepage
Restore the correct seal for the pipes