TM 5-2410-241-23-1
0019
Table 2. Engine Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
273-4 Turbo Outlet Pressure
7. Disconnect engine ECM connec-
Short to Ground -
tor N-C1 (WP 0018, Figure 2).
Continued
8. Using digital multimeter
1. If continuity is found, proceed to
(WP 0296), test for continuity
step 9.
between pin B on air inlet mani-
2. If continuity is not found, replace
fold pressure sensor connector/
ECM harness (WP 0105). Ensure
turbocharger outlet pressure sen-
all harness connectors are recon-
sor connector N-C5 (WP 0018,
nected. Verify correct operation of
Figure 36) and pin 3 on engine
machine (TM 5-2410-241-10).
ECM connector N-C1 (WP 0018,
Figure 2).
9. Using digital multimeter
1. If continuity is found, proceed to
(WP 0296), test for continuity
step 10.
between pin C on Air inlet mani-
2. If continuity is not found, replace
fold pressure sensor connector/
ECM harness (WP 0105). Ensure
turbocharger outlet pressure sen-
all harness connectors are recon-
sor connector N-C5 (WP 0018,
nected. Verify correct operation of
Figure 36) and pin 40 on engine
machine (TM 5-2410-241-10).
ECM connector N-C1 (WP 0018,
Figure 2).
10. Using digital multimeter
1. If continuity is found, replace ECM
(WP 0296), test for continuity
harness (WP 0105). Ensure all
between pin 40 on engine ECM
harness connectors are recon-
connector N-C1 (WP 0018,
nected. Verify correct operation of
Figure 2) and all other pins on
machine (TM 5-2410-241-10).
engine ECM connector N-C1
2. If continuity is not found, replace
(WP 0018, Figure 2).
engine ECM (WP 0101). Ensure
all harness connectors are recon-
nected. Verify correct operation of
machine (TM 5-2410-241-10).
274-3 Atmospheric Pres-
1. Connect MSD (WP 0016). Select
1. If active 274-3 code is present,
sure Open/Short to +Batt
3176C D7 engine ECM and check
proceed to step 2.
for Diagnostic Codes or Event
2. If no active codes are present,
Codes (WP 0013).
problem does not exist at this
time. Resume normal operation.
2. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-2410-241-10).
3. Disconnect atmospheric pressure
sensor connector N-C4
(WP 0018, Figure 35) from atmo-
spheric pressure sensor.
4. Install jumper wire between pin B
and pin C on atmospheric pres-
sure sensor connector N-C4
(WP 0018, Figure 35).
0019-77
