Power Train Data Link -807640274

TM 9-2320-312-24-2

Troubleshooting Section

2. Check the air inlet system for restrictions

If the vehicle speed is greater than the "VSL", the

or leakage. Check the exhaust system for

Power is limited. If a problem is discovered, refer to

restrictions or leakage. Refer to Testing and

Troubleshooting, "Vehicle Speed Circuit - Test".

Adjusting, "Air Inlet and Exhaust System -

Inspect".

Power Train Data Link

Individual Cylinder Malfunction

1. Check the power train data link. Ensure that the

SAE J1922 data link or the SAE J1939 data link

is not limiting the power.

1. Ensure that the electronic unit injector connector

(J300/P300) is fully connected and ensure that

2. Connect the electronic service tool to the cab

the electronic unit injector connector (J300/P300)

data link connector.

is free of corrosion.

3. Monitor the "Powertrain Data Link" status screen

2. Ensure that the ECM engine harness connector

while the vehicle is experiencing problems.

(J2/P2) is fully connected and ensure that the

engine harness connector (J2/P2) is free of

If the "Powertrain Data Link" status screen

corrosion.

indicates that the data link is limiting the power or

the rpm, verify that this is not normal operation. If

3. Connect the electronic service tool to the cab

this is not normal operation, refer to the vehicle

data link connector. Use the Cylinder Cutout Test.

OEM for repairs.

Access the Cylinder Cutout Test by selecting the

"Diagnostic Menu" and the "Diagnostics Test

Menu". Run the Cylinder Cutout Test in order to

Fuel Supply

disable each cylinder. Disabling each cylinder

allows the technician to isolate the misfiring

1. Monitor the exhaust for smoke while the engine

cylinders.

is being cranked.

If the misfiring cylinder can be isolated to

If no smoke is present, there may be a problem

a specific cylinder, refer to Troubleshooting,

with the fuel quality or there may be a problem

"Injector Solenoid Circuit - Test".

with the fuel supply.

4. Perform a Performance Analysis Report (PAR).

2. Check the fuel quality. Refer to the Truck

Performance and Driveability Diagnostic Guide,

Low Injection Actuation Pressure

LEBT3477.

3. Check the fuel pressure. Refer to Testing and

1. Check the engine oil level. Engine oil is used to

Adjusting, "Fuel System Pressure - Test".

activate the high pressure hydraulic pump.

4. Ensure that the fuel system has been primed.

2. Ensure that the engine oil meets the

Refer to Testing and Adjusting, "Fuel System -

recommendations of the engine manufacturer.

Prime".

Refer to the Operation and Maintenance Manual

for further details.

5. Check for fuel supply lines that are restricted.

3. Crank the engine and monitor the injection

6. Check the fuel filters.

actuation pressure and the output of the injection

actuation pressure control valve. The high

7. If the temperature is below 0 C (32 F), check

pressure oil system is operating properly if the

pressure output is a minimum of 6 MPa (870 psi).

for solidified fuel (wax).

4. Connect the electronic service tool and check for

8. Check for air in the fuel system. Refer to Testing

event code 164-11 injection actuation pressure

and Adjusting, "Air in Fuel - Test".

system fault. If an 164-11 event code has

been logged recently, refer to Troubleshooting,

Air Inlet and Exhaust System

"Injection Actuation Pressure -Test".

1. Check for leakage in the air-to-air aftercooler

core . Refer to Testing and Adjusting, "Aftercooler

- Test".