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
Test Step 7. Test for Power at
Display and/or Backup
Reverse Relay.
Alarm Does Not Turn On -
Continued
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove instrument panel front
cover (WP 0174).
3. Connect powershift lever (WP
0007, Figure 114) to powershift
wiring harness connector (WP
0007, Figure 115).
4. Ensure powershift lever is in the R
position (TM 5-2420-231-10).
5. Disconnect reverse relay (WP
0007, Figure 106) from front con-
sole wiring harness connector (WP
0007, Figure 105).
6. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
7. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Proceed to
sure voltage between front console
step 8.
wiring harness connector (WP
Voltage Less Than 10 Volts - Proceed
0007, Figure 105) terminals 30
to Test Step 10.
and 86 (ground). Voltage should
be 10 to 14 volts.
8. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Proceed to
sure voltage between front console
Test Step 8.
wiring harness connector (WP
Voltage Less Than 10 Volts - Proceed
0007, Figure 105) terminals 85
to Test Step 12.
and 86 (ground). Voltage should
be 10 to 14 volts.
Test Step 8. Check for Open Wiring
Harness to Backup Alarm.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect main chassis wiring
harness connector (WP 0007, Fig-
ure 97) from backup alarm con-
nector (WP 0007, Figure 98).
3. With an assistant, connect a
jumper wire between main chas-
sis wiring harness connector (WP
0007, Figure 97) terminal A and
machine ground.
0043-6
