TM 5-2410-241-23-1
0019
00019
Table 2. Engine Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
C AU T I O N
1-11 Cylinder #1 Injector
Fault
Electrical shock hazard. Electronic unit injector system uses 67-73
Volts. Failure to follow this warning may result in injury to personnel.
N OT E
Fuel injectors are an electro-mechanical device. High-pressure fuel is
continuously available to each injector. The engine Electronic Control
Module (ECM) determines the correct time and duration to activate
each injector.
1. Connect MSD (WP 0016).
2. Start engine (TM 5-2410-241-10).
1. If active codes are present, trou-
On MSD, select 3176C D7 engine
bleshoot the applicable code(s)
ECM and check for Diagnostic
Codes or Event Codes (WP
2. If no active codes are present,
proceed to step 3.
3. Perform Injector Solenoid Test
1. If "OK" displayed, problem does
not exist with injector at this time.
Resume normal operation.
2. If "OPEN" displayed, proceed to
step 4.
3. If "SHORT" displayed, proceed to
step 14.
4. Disconnect engine harness con-
nector N-C2 (WP 0018, Figure 7)
from valve cover side connector
NN-C1 (WP 0018, Figure 8).
5. Install jumper wire in pins 1 and
12 on engine harness connector
N-C2 (WP 0018, Figure 7).
N OT E
Other diagnostic codes will set during this test. Ignore other codes.
6. Perform Injector Solenoid Test
1. If "OPEN" displayed, proceed to
step 7.
2. If "SHORT" displayed, proceed to
step 10.
7. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
