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 shuttle interlock timing
Display and/or Backup
relay (WP 0007, Figure 108) from
Alarm Does Not Turn On -
front console wiring harness con-
Continued
nector (WP 0007, Figure 107).
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 - Proceed to
sure voltage between front console
step 5.
wiring harness connector (WP
Voltage Less Than 10 Volts - Replace
0007, Figure 107) terminals B+
front console wiring harness (WP
and G (ground). Voltage should be
0162).
10 to 14 volts.
Proceed to Test Step 30.
5. Using a digital multimeter, mea-
Voltage 10 to 14 Volts - Proceed to
sure voltage between front console
Test Step 11.
wiring harness connector (WP
Voltage Less Than 10 Volts - Proceed
0007, Figure 107) terminals I and
to Test Step 15.
G (ground). Voltage should be 10
to 14 volts.
Test Step 11. Check for Open Circuit
in Front Console Wiring Harness.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between front con-
Replace shuttle interlock timing relay
sole wiring harness connector (WP
(WP 0007, Figure 108).
0007, Figure 107) terminal L and
Proceed to Test Step 30.
front console wiring harness con-
Resistance Greater Than 5.0 Ohms -
nector (WP 0007, Figure 105) ter-
Replace front console wiring harness
minal 30. Resistance should be
(WP 0162).
5.0 ohms or less.
Proceed to Test Step 30.
Test Step 12. Check for Open Circuit
in Front Console Wiring Harness.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect front console wiring
harness connector (WP 0007, Fig-
ure 112) from powershift wiring
harness connector (WP 0007, Fig-
ure 113).
0043-8
