TM 5-3805-296-23-1
0040
Table 1. 1785 Intake Manifold Pressure Sensor Diagnostic Codes Continued.
040
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
6. Using digital multimeter
1785-03 Intake Manifold
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Pressure Sensor Voltage
Replace engine ECM (WP 0252).
between connector CM-C1
Above Normal Continued
Proceed to Test Step 7.
terminal 17 and terminal 72
Resistance Greater Than 5.0 Ohms
(WP 0012, Figure 30).
Replace basic engine wiring harness
(WP 0251).
Proceed to Test Step 7.
Test Step 3. Test Intake Air Pressure
Sensor Signal Circuit Voltage.
Voltage Greater Than 12.5 V
Using digital multimeter (WP 0540), test
Proceed to Test Step 4.
for voltage between connector CM-C7
Voltage 12.5 V or Less Proceed to
terminal 3 and terminal 2
Test Step 5.
(WP 0012, Figure 22).
Test Step 4. Test for Shorted Basic
Engine Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Lower left frame access plate
(WP 0376).
3. Remove four bolts
(Figure 2, Item 1), washers
(Figure 2, Item 2), bushings
(Figure 2, Item 3), and splash
shield (Figure 2, Item 4) from
machine.
Figure 2. Splash Shield and Retaining Hardware.
0040
4. Disconnect connector CL-C1
(WP 0012, Figure 45) from engine
ECM.
5. Disconnect connector CM-C1
(WP 0012, Figure 30) from engine
ECM.