TM 5-3805-296-23-2
0091
Table 1. 1840 Tractor Parking Brake Pressure Switch Diagnostic Codes Continued.
091
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 6. Test Transmission
1840-03 Tractor Parking
Wiring Harness for High Resistance
Brake Pressure Switch
or Open.
Voltage Above Normal
1. Turn ignition switch and battery
Continued
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Connect jumper wire between
terminal A and terminal B of
connector A-C4
(WP 0012, Figure 125).
3. Disconnect connector A-C1
(WP 0012, Figure 106) from
connector J-C3
(WP 0012, Figure 101).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 7.
between connector A-C1
Resistance Greater Than 5.0 Ohms
terminal 17 and terminal 18
Replace transmission wiring harness
(WP 0012, Figure 106).
(WP 0266).
Proceed to Test Step 9.
Test Step 7. Test Chassis Wiring
Harness for High Resistance or
Open.
1. Remove jumper wire from
terminal A and terminal B of
connector A-C4 (WP 0012,
Figure 125).
2. Connect jumper wire between
terminal 17 and terminal 18 of
connector J-C3
(WP 0012, Figure 101).
3. Disconnect connector J-C8
(WP 0012, Figure 100) from
connector W-C1
(WP 0012, Figure 99).
4. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to Test Step 8.
between connector J-C8
Resistance Greater Than 5.0 Ohms
terminal 5 and terminal 13
Replace chassis wiring harness
(WP 0012, Figure 100).
(WP 0305).
Proceed to Test Step 9.
0091-5
