Troubleshooting

82 RENR2696-01
Troubleshooting Section
System Response:
The ECM will derate the engine power by 20% while
the diagnostic code is active.
Possible Performance Effect:
While the diag
nostic code is active the engine will
experience the following conditions:
•
Low power
•
Reduced engine speed
Troubleshooting:
Contact the Pe
rkins Technical Support Centre in
order to check if the software version is correct. Also
check that there have been no software updates.
If the problem still e xists contact the Perkins Technical
Support Centre in order to change the fuel injection
pump. The war
ranty of the fuel injection pump will
be affected if the pump is replaced without prior
consultation.
Replace the fuel injection pump. Refer to Disassembly
and Assembly, “Fuel Injection Pump Remove and
Install”.
Check for active diagnostic codes.
Results:
•
OK – STOP.
i02271066
CID 1684 FMI
14 Fue l In jection
Pump, No Communications
Conditions Which Generate This Code:
The ECM detects a communication failure with the
fuel injection pump. The communication failure may
be due to di
sconnected connectors for the fuel
injection pump or a faulty wiring harness for the fuel
injection pump.
System Response:
The ECM wil
l log the diagnostic code. The diagnostic
code may be viewed on the electronic service tool.
Possible Pe rformance Effect:
The 1684-14 diagnostic code will not have any
effect on the performance of the engine. 1684-14 is
normally acco
mpanied by 174-02 or 320-02. The
174-02 may cause the engine to have low power. If
320-02 is active, the ECM will limit the engine rpm
to 1200 rpm.
Troubleshooting:
Further troubleshooting is required.
Test Step 1.
Perform the following diagnostic procedure: “CAN
Data Link Cir
cuit - Test”
Results:
•
OK – STOP.
•
Not OK – Proce
ed to Test Step 2.
Test Step 2.
Connect a test ECM in order to determine if the
problem is in the original ECM or in the fuel injection
pump.
Note: The parameters of the test ECM must match
the paramet
ers in the suspect ECM. If the test ECM
resolves the problem, reconnect the suspect ECM.
Verify that the problem returns. If the problem returns,
replace the
suspect ECM.
Check for active diagnostic codes.
Results:
•
OK – STOP.
•
Not OK, 1684-14 is still active. – Proceed to Test
Step 3.
Test Step 3.
Contact the Perkins Technical Support Centre in
order to check if the software version is correct. Also
check that
there have been no software updates.
If the problem still exists, the fuel injection pump
must be rep
laced. Contact the Perkins Technical
Support Centre in order to replace the fuel injection
pump. The warranty of the fuel injection pump will
be affect
ed if the pump is replaced without prior
consultation. Refer to Disassembly and Assembly,
“Fuel Injection Pump Remove and Install”.
Check for active diagnostic codes.