TM 5-3805-296-23-2
0084
Table 1. 1429 Tractor System Air Pressure Sensor Diagnostic Codes Continued.
084
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Test for Shorted Main
1429-03 Tractor System Air
Cab Wiring Harness.
Pressure Sensor Voltage
1. Turn ignition switch and battery
Above Normal Continued
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 52 (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 52 (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.
Test Step 3. Test Trac/S Air Press
Sensor Circuit Function.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Connect jumper wire between
terminal C and terminal B of
connector W-C21
(WP 0012, Figure 75).
3. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
4. At MSD, check for active
1429-4 Tractor System Air Pressure
diagnostic code 1429-3 Tractor
Sensor Voltage Below Normal
System Air Pressure Sensor
Becomes Active Replace tractor air
Voltage Above Normal (WP 0008).
pressure sensor (WP 0521).
Proceed to Test Step 5.
1429-3 Tractor System Air Pressure
Sensor Voltage Above Normal
Remains Active Replace
transmission/chassis ECM (WP 0495).
Proceed to Test Step 5.
0084-3
