Injector Solenoid Circuit

311

TM 9-2320-312-24-2

Troubleshooting Section

Results:

Table 173

Service Tool Pressure

Pressure Gauge Reading

Yes Proceed to Test Step 6.

Reading

Range

6000 kPa

4000-7800 kPa (580-1130

psi)

Repair: The voltage supply for the injection

10000 kPa

8000-11800 kPa

actuation pressure sensor is not correct. Refer to

(1160-1710 psi)

Troubleshooting, "5 Volt Engine Pressure Sensor

15000 kPa

13000-16800 kPa

Supply Circuit - Test".

(1885-2435 psi)

STOP.

23000 kPa

21000-24800 kPa

(3045-3595 psi)

Test Step 6. Compare the Injection

Actuation Pressure Sensor Reading to a

Expected Result:

Pressure Gauge Reading.

The reading that is displayed on the electronic

service tool and the reading on the pressure gauge

readings agree.

Escaping fluid under pressure, even a pinhole size

Results:

leak, can penetrate body tissue, causing serious

injury, and possible death. If fluid is injected into

Yes

your skin, it must be treated immediately by a doc-

tor familiar with this type of injury.

Repair: The injection actuation pressure sensor

and the ECM are working properly. Refer to

Always use a board or cardboard when checking

Troubleshooting, "Troubleshooting without a

for a leak.

Diagnostic Code".

A. Turn the ignition key switch to the OFF position.

STOP.

B. Install a 8T-0852 Pressure Gauge to an oil

supply port on the high pressure oil rail that is

located on the cylinder head.

Repair: Temporarily replace the injection actuation

pressure sensor and repeat the test. Replace the

C. Connect the electronic service tool to the cab

injection actuation pressure sensor if this corrects

data link connector.

the problem. If the new sensor is out of the range,

then the pressure gauge is faulty.

D. Start the engine.

STOP.

E. Go to the "Injection Actuation Pressure Test" on

the Diagnostic Menu of the electronic service

tool.

i01632162

Injector Solenoid Circuit - Test

F. Start the test and monitor the Injection Actuation

Pressure Sensor reading from the electronic

SMCS Code: 1290-038

service tool. Compare the pressure reading from

the electronic service tool to the pressure reading

System Operation Description:

on the 8T-0852 Pressure Gauge. Perform

a comparison of the two different pressure

Use this procedure under the following situation:

indicators at varying engine rpm.

Use this procedure if any of the following diagnostic

Note: Use Table 173 for the approximate range for

codes are present:

the injection actuation pressure sensor. Compare

the 8T-0852 Pressure Gauge pressure reading to

1-11 Cylinder 1 Fault (72)

the pressure reading from the table.

2-11 Cylinder 2 Fault (72)

3-11 Cylinder 3 Fault (73)

4-11 Cylinder 4 Fault (73)