Volvo TSI, Manual

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Group 28 Troubleshooting
MID 128 PID 102 Boost Pressure
In addition to the boost pressure, the sensor also measures the boost air temperature.
Fault Codes
FMI 3
Short circuit to voltage.
Conditions for fault code:
•
The voltage on EA3 exceeds 4.95 V.
Possible cause:
•
Short circuit to battery voltage, 5 V supply wire.
•
Short circuit to battery voltage or 5 V, signal wire.
•
Fault in sensor.
Reaction from the EECU:
•
Fault code is set.
•
Yellow lamp is requested.
•
The EECU stops sending PID 102.
•
Power reduction.
Noticeable external symptom:
•
Yellow lamp lights up.
•
The boost pressure gauge shows 0.
•
Low power output.
FMI 4
Short circuit to ground or open circuit.
Conditions for fault code:
•
The voltage on EA3 is under 0.08 V.
Possible cause:
•
Break, 5 V supply wire.
•
Break, signal wire.
•
Short circuit to ground, 5 V supply wire.
•
Short circuit to ground, signal wire.
•
Fault in sensor.
Reaction from the EECU:
•
Fault code is set.
•
Yellow lamp is requested.
•
The EECU stops sending PID 102.
•
Power reduction.
Noticeable external symptom:
•
Yellow lamp lights up.
•
The boost pressure gauge shows 0.
•
Low power output.
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