TM 5-3805-291-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
INJECTOR SOLENOID CIRCUIT TEST - CONTINUED
5.
Perform injector solenoid test.
a.
Start engine (TM 5-3805-291-10).
b.
Allow engine to warm up to normal operating temperature (approximately 171F [77C]).
c.
Stop engine (TM 5-3805-291-10).
d.
Place battery disconnect switch in ON position (TM 5-3805-291-10).
e.
Access injector solenoid test by accessing these display screens in this order:
(1)
"Diagnostics"
(2)
"Diagnostic Tests"
(3)
"Injector Solenoid Test"
f.
Activate injector solenoid test.
g.
As each solenoid is energized by ECM an audible click can be heard at valve cover. Ensure activation of each sole-
noid by comparing location of click with progress that is displayed on ET.
h.
Perform injector solenoid test at least two times.
Expected Results. All cylinders on ET are OK.
i.
(1)
If results are OK, problem appears to be resolved. Problem was probably caused by poor electrical connec-
tion in a connector. If codes continue to be logged, refer to Electrical Connector Inspection. If engine is
misfiring or if engine has low power, refer to Troubleshooting, Engine Misfires, Runs Rough or Is Unsta-
ble or Troubleshooting, Low Power/Poor or No Response to Throttle (WP 0008 00).
(2)
If results are not OK, record cylinder that indicates "Open". Proceed to step 6.
(3)
If results are not OK, record cylinder that indicates "Short". Proceed to step 7.
6.
Check harness between ECM and valve cover base for an open circuit.
WARN I N G
Electronic fuel injector system uses 90 to 120V. Do not touch any components during testing. Failure to
comply may result in injury to personnel or damage to equipment.
a.
Place battery disconnect switch in OFF position (TM 5-3805-291-10).
b.
Disconnect J300/P300 injector valve cover entry connector at valve cover base.
c.
Place battery disconnect switch in ON position (TM 5-3805-291-10).
d.
Fabricate a jumper wire long enough to short circuit different terminal locations at P300 connector. Crimp connec-
tor pins on both ends of jumper wire.
0013 00-58
