Group 30: Electrical system Diagnostic Trouble Codes
125
Fault tracing
FMI 3 Abnormally high voltage or short
circuit to higher voltage
Conditions for fault code:
The voltage exceeds the normal value or is short cir-
cuited to higher voltage.
Possible reason:
• Short circuit between 5V supply voltage and bat-
tery voltage in EMS 2 connector B.
Suitable action:
1. Check all 5V supply cables distributed by EMS 2
connector B. (see EMS 2 wiring diagram)
FMI 4 Abnormally low voltage or short
circuit to lower voltage
Possible reason:
• Short circuit between the supply cables to the oil
pressure sensor.
• Short circuit between the supply cables to the fuel
pressure sensor.
Suitable action:
1. Check the sensor supply cables to oil pressure
sensor.
2. Check the sensor supply cables to fuel pressure
sensor.
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