Cid 1797 Fmi 03 Fuel Rail Pressure Sensor Open/Short To +Batt; Cid 1797 Fmi 04 Fuel Rail Pressure Sensor Short To Ground - Perkins 1106D Troubleshooting Manual

104
Troubleshooting Section
System Response:
If equipped, the warning light will be on. The ECM
will log the diagnostic code. The ECM will trigger
a snapshot. The ECM will flag the intake manifold
pressure as being invalid. A default value is used for
the intake manifold pressure.
For engines with an electronically controlled
wastegate, the current for the wastegate solenoid
will be set to a default value while this code is active.
This will derate the engine. The derate will prevent
any overpressure in the intake manifold which could
be caused by an overspeed of the turbocharger.
Note: Any open circuits or short circuits in the signal
wire for the oil pressure may reset this diagnostic.
Possible Performance Effect:
•
The performance of the engine will be adversely
affected.
Troubleshooting:
This diagnostic code is designed to detect the loss of
the 5 V supply to the sensor.
Perform the following diagnostic procedure: "Engine
Pressure Sensor Open or Short Circuit - Test"
Results:
•
OK – STOP.
CID 1797 FMI 03 Fuel Rail
Pressure Sensor open/short to
+batt
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects the
following conditions:
•
No 0262 codes for the 5 volt supply are active.
•
Diagnostic code 0168-01 is not active.
•
The signal voltage for the pressure in the fuel rail is
more than 4.8 V for 0.6 seconds.
System Response:
If equipped, the warning lamp will be on. The ECM
will log the diagnostic code. The ECM will trigger
a snapshot. The electronic service tool will display
"Voltage Above Normal" next to "Desired Fuel Rail
Pressure" and "Actual Fuel Rail Pressure" on the
status screens. A default value is used for the
pressure in the fuel rail.
Possible Performance Effect:
The engine will be derated.
Troubleshooting:
This code can be caused by a loss of reference
ground, an open signal wire or a short to a voltage
source.
Perform the following diagnostic procedure: "Engine
Pressure Sensor Open or Short Circuit - Test"
Results:
•
OK – STOP.
CID 1797 FMI 04 Fuel Rail
Pressure Sensor short to
ground
i02413191
Conditions Which Generate This Code:
The Electronic Control Module (ECM) detects the
following conditions:
•
No 0262 codes for the 5 volt supply are active.
•
Diagnostic code 0168-01 is not active.
•
The signal voltage for the pressure in the fuel rail is
less than 0.2 V for 0.6 seconds.
System Response:
If equipped, the warning lamp will be on. The ECM
will log the diagnostic code. The ECM will trigger
a snapshot. The electronic service tool will display
"Voltage Below Normal" next to "Desired Fuel Rail
Pressure" and "Actual Fuel Rail Pressure" on the
status screens. A default value is used for the
pressure in the fuel rail.
SENR9982
i02413265