Volvo TAD650VE Workshop Manual page 62

Diagnostic Trouble Codes
60
FMI 3 Abnormally high voltage or short
circuit to higher voltage
Conditions for fault code:
The voltage on pin A22 on the EMS 2 is more than
4.75 Volt.
Possible reason:
•
Short circuited sensor signal cable to 5V voltage
or battery voltage.
•
Faulty sensor.
Suitable action:
1. Check cable harness and connectors between
boost pressure sensor and EMS 2.
2. Check function of boost pressure sensor.
FMI 5 Abnormally low current or open
circuit
Conditions for fault code:
The voltage on pin A22 on the EMS 2 is less than 0.07
Volt.
Possible reason:
•
An open circuit in boost pressure signal cable.
•
An open circuit in sensor negative cable.
•
Short circuited boost pressure signal cable to sen-
sor negative cable.
•
Faulty sensor.
Suitable action:
1. Check contact pressure in socket 22 and 11 in
engine connector A. Also check contact pressure
in connector at boost pressure sensor.
2. Check cable harness and connectors between
boost pressure sensor and EMS 2.
3. Check function of boost pressure sensor.
Group 30: Electrical system