Troubleshooting

RENR2696-01 79
Troubleshooting Section
Results:
•
OK – STOP.
i01798173
CID 1684 FMI 08 Fue l In jectio n
Pump, Crank shaft Reference
Fault
Conditions Which Generate This Code:
This code is ge
nerated by the fuel injection pump.
The fuel injection pump detects one of the following
conditions:
•
The fuel injection pump did not receive a position
signal.
•
The signal that is received by the fuel injection
pump is incor
rect.
The ECM will log the diagnostic code. The diagnostic
code may be vi
ewed on the electronic service tool.
System Response:
The fuel injection pump will use the engine
speed/timing sensor in order to set the engine timing.
The ECM will
derate the engine power by 20% while
the diagnostic code is active.
Possible Pe
rformance Effect:
The engine will experience any of the following
conditions
:
•
Small loss of engine performance
•
Increased emissions
•
Theenginem
ay be difficult to start.
Troubleshooting:
Further troubleshooting is required.
Test Step 1.
Check for the following active code:
•
Diagnostic code 320-02
•
Diagnostic
code 320-11
Results:
•
Codes Active – Proceed to Test Step 2.
Test Step 2.
Perform the following diagnostic procedure: “Engine
Speed/Timing Sensor Circuit - Test”
Results:
•
OK – STOP.
•
Not OK – Proceed to Test Step 3.
Test Step 3.
Pay close atte
ntion to the following areas:
•
P1/J1 ECM connector
•
P40/J40 Fuel injection pump connector
•
P1:59 Engine p
osition
•
P40:8 Engine position
Refer to Troubleshooting, “Electrical Connectors -
Inspect”.
Results:
•
OK – Proceed to
Test Step 4.
Test Step 4.
Check continuity between the following connections:
•
P1:59 Engine p
osition
•
P40:8 Engine position
Expected Result:
If the fault i
s cleared then STOP.
If the fault still exists, repair the wire harness or
replace the w
ire harness.
Ensure that the repairs have eliminated the problem.
Check for active diagnostic codes.
Results:
•
OK – STOP.