BELOW THRESHOLD
Test results
1
CHECK ON CONNECTIONS AT TURBOCHARGING SENSOR AND AT ENGINE MANAGEMENT CONTROL UNIT
All OK
Problems encountered
Operation
Check for the presence of loose connections at the turbocharging sensor and at the engine management control unit
Go to Step 2
Presence of loose connections
Restore the correct connections.
2
CHECK ON WIRING INSULATION AND INTERRUPTION
Check that the wiring is correctly insulated and check for breaks.
Go to Step 3
1. Wiring insulation not correct
2. Breaks in the wiring.
1. Restore correct insulation
2. Restore the correct wiring.
3
TURBOCHARGING SENSOR OPERATION CHECK
Check that the turbocharging sensor is working properly
See Test 1064BI FUEL SYSTEM RETURN PRESSURE CHECK
Go to Step 4
Turbocharging sensor not working properly
Replace the turbocharging sensor
Op. 1056B44 AIR PRESSURE SENSOR - R + R
4
ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK
Check that the engine management control unit is working properly
End of diagnosis
Engine management control unit not working properly
Replace the engine management control unit
Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R
ABOVE THRESHOLD
WIRING INSULATION CHECK
Check that the wiring is correctly insulated.
Wiring insulation not correct
Restore correct insulation