TM 5-2410-240-23-1
0019
Table 2. Engine Troubleshooting with Codes - Continued.
0019
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
1785-03 Intake Manifold Pressure
Test Step 4: Test Harness 5-Volt
Sensor Voltage Above Normal
and Return Circuit.
Continued
1. Turn ignition switch and bat-
tery disconnect switch to OFF
position (TM 5-2410-240-10).
2. Leave jumper wire at air
(boost) sensor harness con-
nector E-C7 (WP 0018,
Figure 108) terminal 1 and ter-
minal 2 in place.
3. Disconnect engine ECM har-
ness connector E-C1
(WP 0018, Figure 102) from
engine ECM J2.
4. Using digital multimeter
Continuity - ECM faulty. Replace
(WP 0283), test for continuity
engine ECM (WP 0049).
between engine ECM har-
Remove jumper wire from E-C7
ness connector E-C1
(WP 0018, Figure 108) terminal 1
(WP 0018, Figure 102) termi-
and terminal 2.
nal 46 and terminal 38.
Connect E-C7 (WP 0018,
Figure 108) to air (boost) pressure
sensor.
Verify proper operation of machine
(TM 5-2410-240-10).
No Continuity - Engine control
wiring harness is open. Replace
engine control wiring harness
(WP 0052). Verify proper operation
of machine (TM 5-2410-240-10).
Test Step 1: Test Signal Circuit.
1785-04 Intake Manifold Pressure
Sensor Voltage Below Normal
N OT E
Always inspect harness connectors that are involved in the
circuit. Poor connections can often be the cause of an electrical
circuit problem. Verify that all connections in the circuit are clean
and secure, and connections are in good condition. If a problem
with connection is found, correct the problem and verify
diagnostic code is active before performing this procedure.
Tag wiring harnesses to aid installation.
1. Connect MSD (WP 0016).
Select engine ECM C6.6 D6K.
1785-04 Active - Proceed to
2. Start and run engine (TM 5-
step 3.
2410-240-10), and verify
1785-04 is active.