TM 5-3805-296-23-2
0086
Table 1. 1431 Pilot Air Pressure Sensor Diagnostic Codes Continued.
086
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
6. Using digital multimeter
1431-03 Pilot Air Pressure
Voltage 18 to 25 V Proceed to Test
(WP 0540), test for voltage
Sensor Voltage Above
Step 3.
between connector W-C31
Normal Continued
Voltage Less Than 18 V Replace
terminal A and terminal B
main cab wiring harness (WP 0505).
(WP 0012, Figure 65).
Proceed to Test Step 5.
Test Step 2. Test for Shorted Main
Cab Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector W-C12
(WP 0012, Figure 88) from
transmission/chassis ECM.
3. Disconnect connector W-C13
(WP 0012, Figure 89) from
transmission/chassis ECM.
4. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C12
Proceed to Test Step 5.
terminal 51 (WP 0012, Figure 88)
No Continuity Proceed to step 5.
and all other terminals in
connector W-C12 (WP 0012,
Figure 88).
5. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C12
Proceed to Test Step 5.
terminal 51 (WP 0012, Figure 88)
No Continuity Replace transmission/
and all terminals in connector
chassis ECM (WP 0495).
W-C13 (WP 0012, Figure 89).
Proceed to Test Step 5.
0086-4
