TM 9-6115-730-24
0013
ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
MALFUNCTION
Cylinder 1 - 6 Injector Solenoids. Failure mode is not identifiable (Mechanical Failure).
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 3.
Connect the Cat ET to Connector CDC-P7 (WP 0012).
STEP 4.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 5.
Monitor the logged diagnostic code screen on the Cat ET. Look for a FMI 11
code that is related to one of the unit injectors.
STEP 6.
Turn the ENGINE CONTROL switch to MANUAL START. Allow the engine to
warm up to the normal operating temperature of 77 C (171 F).
STEP 7.
Access the Cylinder Cutout Test on the Cat ET.
a. Enable the cooling fan, if the fan is not controlled by the ECM. If the ECM
controls the cooling fan, the cooling fan will start automatically when the test
begins.
b. Shut off all parasitic loads which could affect the results of the test.
STEP 8.
Run the Cylinder Cutout Test.
a. Follow the instructions that are provided. The Cylinder Cutout Tests are
interactive so the procedure is guided to the finish.
b. Print a report of the test and evaluate the results.
c.
If the results of the Cylinder Cutout Test indicate that all of the cylinders are
OK, suspect an electrical problem or a mechanical problem with another
system on the engine. If the engine is misfiring or if the engine has low
power, refer to WP 0011 Troubleshooting, Engine Misfires, Runs Rough or Is
Unstable and Low Power/Poor or No Response to Throttle in WP 0011.
d. If the Cylinder Cutout Test indicates that there is a weak cylinder. There may
be an injector solenoid that is partially shorted or there may be a mechanical
problem with the cylinder.
STEP 9.
Monitor the logged diagnostic code screen on the Cat ET. Look for a FMI 11
code that is related to one of the unit injectors.
STEP 10.
Use the Injector Solenoid Test to test the injector solenoids.
a. Ensure that the engine has warmed to the normal operating temperature of
77C (171F).
b. Stop the engine as follows: On EMCP set ENGINE CONTROL switch to
COOL DOWN/STOP. Set Battery Disconnect Switch to ON. Set DEAD
CRANK SWITCH to NORMAL. DO NOT START THE ENGINE.
c.
Access the Injector Solenoid Test on the Cat ET.
d. Activate the test.
0013-17
