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
Test Step 2. Test for Shorted Main
1431-04 Pilot Air Pressure
Cab Wiring Harness.
Sensor Voltage Below
1. Disconnect connector W-C12
Normal Continued
(WP 0012, Figure 88) from
transmission/chassis ECM.
2. Disconnect connector W-C13
(WP 0012, Figure 89) from
transmission/chassis ECM.
3. Using digital multimeter
Continuity Replace main cab wiring
(WP 0540), test for continuity
harness (WP 0505).
between connector W-C12
Proceed to Test Step 3.
terminal 51 (WP 0012, Figure 88)
No Continuity Proceed to step 4.
and all other terminals in
connector W-C12
(WP 0012, Figure 88).
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 3.
terminal 51 (WP 0012, Figure 88)
No Continuity Proceed to step 5.
and all terminals in connector
W-C13 (WP 0012, Figure 89).
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 3.
terminal 51 (WP 0012, Figure 88)
No Continuity Replace transmission/
and ground.
chassis ECM (WP 0495).
Proceed to Test Step 3.
0086-9
