This test will maintain dosing pressure for 10 minutes
after priming. During this time, the DEF pump will
pressurize the entire DEF dosing system. The DEF
injector will remain closed to maintain a constant
pressure within the dosing system. The DEF pump
will purge the system at the end of the test.
Diesel Exhaust Fluid (DEF) temperatures can reach
65° to 70°C (149° to 158°F) during normal engine
operation. Stop the engine. Wait for 15 minutes to
allow the DEF system to be purged and the DEF to
cool before service or repair is performed.
Calibrations
Electronic service tool calibration procedures are
listed below.
In the electronic service tool, select the engine ECM.
Select the “Service” tab.
Select the “Calibrations” tab.
Calibrations Listed in the Engine ECM
Menu
Injector Codes Calibration
Whenever a fuel injector is replaced, the injector fuel
delivery must be trimmed. Trimming the injector
calibrates all the injectors to deliver the same amount
of fuel. The Injector Codes Calibration allows the
injector trim code information to be programmed into
the ECM. After the injector is calibrated, the
calibration data is checked for validity.
When new injectors are installed, the trim code for
each injector must be entered using the electronic
service tool. Refer to Troubleshooting, Injector Code
- Calibrate for the correct procedure.
High-Pressure Fuel Pump Calibration
High-pressure fuel pump calibration is used to
perform a pump calibration manually. In normal
operation, this calibration procedure will occur
automatically. The calibration must be performed
only as instructed during troubleshooting procedures.
The pump calibration is used to optimize the dynamic
characteristics of the rail pressure control. If there are
issues with overshooting or undershooting the
desired rail pressure, a pump calibration will improve
the rail pressure control.
Dyno Mode
In the electronic service tool, select the engine ECM.
Select the “Service” tab.
Select the “Dyno Mode” tab.
Dyno Mode
When the engine is installed in a machine, the engine
ECM receives inputs from various machine
components, such as the transmission ECM or
machine ECM. If the ECM does not see the inputs,
the ECM assumes that something is wrong and sets
a diagnostic trouble code.
Dyno Mode is used to run an engine on a
dynamometer without derates or diagnostic trouble
codes tripping from missing inputs. Dyno Mode does
not require the CEM to be installed.
Service Procedures
Electronic service tool service procedures are listed
below.
In the electronic service tool, select the engine ECM.
Select the “Service” tab.
Select the “Service Procedures” tab.
Service Procedures Listed in the Engine
ECM Menu
Aftertreatment Recovery Procedure (DPF
Engines Only)
Note: This procedure is only applicable to engines
that have a DPF in the aftertreatment system.
Avoid contact with hot surfaces. Exhaust piping
and engine components become hot during en-
gine operation and cool slowly after engine shut-
down. Any contact with hot surfaces can cause
severe burns.
This procedure is used specifically for engines which
require periodic HC dosing to clean the SCR system.
The test is performed at elevated temperatures so
that acceptable NOx conversion is maintained. The
purpose of the procedure is to recover performance
of the complete aftertreatment system.
The ECM software will perform the necessary checks
to ensure that the procedure runs under the required
conditions. The checks will generate any relevant
error identifiers if the procedure aborts before
completion.
The following engine conditions must be met before
the procedure will start:
• No related active diagnostic codes
• Coolant temperature condition met
• Engine speed and load in the required range
460 UENR4469-36
Service
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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