ABOVE THRESHOLD
Test results
1
ELECTRICAL CONNECTIONS CHECK
All OK
Problems encountered
Operation
Check for loose electrical connections at the sensor and at the engine management control unit.
Go to Step 2
Presence of loose electrical connections.
Restore the correct connections.
2
WIRING CONTINUITY CHECK
Check for breaks in the wiring continuity
See E6021 COMPRESSOR ENGAGEMENT
Go to Step 3
Breaks in the wiring continuity.
Restore the correct continuity for the wiring.
3
WIRING INSULATION CHECK
Check the condition of the wiring insulation (short circuit to Vbatt).
Go to Step 4
Wiring insulation faulty.
Restore correct wiring insulation.
4
SENSOR OPERATION CHECK
Check that the air conditioning pressure sensor is working properly by carrying out the
See Test 5040BA CHECK ON OPERATION OF MULTI-STAGE PRESSURE SWITCH/LINEAR SENSOR
Go to Step 5
Air conditioning pressure sensor not working properly.
Replace the air conditioning pressure sensor
Op. 5040B20 AIR CONDITIONING LINEAR PRESSURE TRANSDUCER - R.R.
5
ENGINE MANAGEMENT CONTROL UNIT OPERATION CHECK
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
BELOW THRESHOLD
Check the condition of the wiring insulation (short circuit to GND).