TM 5-2410-240-23-1
0019
Table 2. Engine Troubleshooting with Codes - Continued.
0019
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
1785-04 Intake Manifold Pressure
3. Turn ignition switch to OFF
Sensor Voltage Below Normal
position (TM 5-2410-240-10).
Continued
4. Disconnect air (boost) pres-
sure sensor harness connec-
tor E-C7 (WP 0018,
Figure 108) from air (intake)
pressure sensor.
5. Start and run engine (TM 5-
2410-240-10).
N OT E
Wait at least 30 seconds for diagnostic codes to become active.
6. Using MSD (WP 0016), select
1785-04 Remains Active - Pro-
engine ECM C6.6 D6K and
ceed to Test Step 2.
check if diagnostic code 1785-
1785-03 Becomes Active - Sen-
03 is active.
sor is faulty. Replace air (boost)
pressure sensor (WP 0055). Ver-
ify proper operation of machine
(TM 5-2410-240-10).
Test Step 2: Test Harness Sig-
nal Circuit.
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Disconnect engine ECM har-
ness connector E-C1
(WP 0018, Figure 102) from
engine ECM J2.
3. Using digital multimeter
Continuity - Engine control wiring
(WP 0283), test for continuity
harness is shorted. Replace
between engine ECM har-
engine control wiring harness
ness connector E-C1
(WP 0052). Verify proper operation
(WP 0018, Figure 102) termi-
of machine (TM 5-2410-240-10).
nal 55 and all other terminals
No Continuity - Proceed to step 4.
in engine ECM harness con-
nector E-C1 (WP 0018,
Figure 102).
0019-111
