Volvo TAD734GE Repair Manual

Group 30: Electrical system Diagnostic Trouble Codes
137
MID 128, PSID 97
Rail pressure release valve
MID 128: Engine control unit
FMI 0: The sensor value is valid but above the nor-
mal working range.
FMI 7: Mechanical fault. The system responds in-
correctly.
FMI 11: Unidentified fault.
FMI 14: Special instruction.
FMI Fault code explanation
0 Leakage detected in pressure
release valve
7 Pressure release valve stuck close
11, 14 Pressure release valve open
Fault indication
DCU: Engine warning in DCU display.
CIU: None
Lamp status
FMI 0, 11, 14: Yellow lamp
FMI 7: Red lamp
Flash code
Electrical fault: 8.3
Value fault: None
Symptom
FMI 0, 11: Engine derated: engine speed limitation
(1100 rpm). Fuel pressure limitation (800
bar). Engine torque reduction.
FMI 7: Engine shut off after delay or engine derat-
ed. Engine derated: engine speed limita-
tion (1100 rpm). Fuel pressure limitation
(800 bar). Engine torque reduction.
FMI 14: Engine derated: engine speed limitation
(1100 rpm). Engine torque reduction. Full
fuel flow delivery. Limp home with pres-
sure release valve opened.

Volvo TAD734GE Specifications

General

Engine Model	TAD734GE
Cooling System	Liquid-cooled
Displacement	7.15 liters
Bore x Stroke	108 x 130 mm
Aspiration	Turbocharged
Fuel System	Electronic Unit Injectors (EUI)
Engine Speed	1500 rpm
Emission Level	EU Stage II
Engine Type	4-stroke, 6-cylinder in-line diesel engine