TM 5-2420-231-23-1
0043
Table 1. Display and/or Backup Alarm Does Not Turn On - Continued.
043
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Disconnect powershift wiring har-
Display and/or Backup
ness connector (WP 0007, Figure
Alarm Does Not Turn On -
115) from loader control lever wir-
Continued
ing harness connector (WP 0007,
Figure 116).
3. Using a digital multimeter, test for
Continuity - Replace loader control
continuity between loader control
lever harness (WP 0277).
lever connector (WP 0007, Figure
Proceed to Test Step 30.
116) terminal D and machine
No Continuity - Replace powershift
ground. There should be no conti-
wiring harness (WP 0167).
nuity.
Proceed to Test Step 30.
Test Step 24. Test for Shorted Main
Chassis Wiring Harness.
1. Disconnect front console wiring
harness connector (WP 0007, Fig-
ure 5) from main chassis wiring
harness connector (WP 0007, Fig-
ure 6).
2. Using a digital multimeter, test for
Continuity - Replace main chassis
continuity between main chassis
wiring harness (WP 0154).
wiring harness connector (WP
Proceed to Test Step 30.
0007, Figure 6) terminal 3D and
No Continuity - Replace front console
machine ground. There should be
wiring harness (WP 0162).
no continuity.
Proceed to Test Step 30.
Test Step 25. Test for Power at
Transmission Controller.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove transmission controller
(WP 0168).
3. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
4. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Replace
sure voltage between powershift
transmission controller (WP 0168).
controller wiring harness connec-
Proceed to Test Step 30.
tor (WP 0007, Figure 20) terminals
Voltage Less Than 10 Volts - Proceed
A1 and B1 (ground). Voltage
to Test Step 26.
should be 10 to 14 volts.
Test Step 26. Test for Open Ground
to Transmission Controller.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
0043-14