TM 5-2420-231-23-1
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Table 1. Transmission Has Uncommanded Shift into Neutral.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Transmission Has
Uncommanded Shift into
Always inspect the wiring harness connectors that are involved in the
Neutral
circuit. Poor connections can often be the cause of a problem in an
electrical circuit. Verify that all connections in the circuit are clean and
secure, and that all connections are in good condition. If a problem with a
connection is found, correct the problem and verify that this malfunction is
active before performing this procedure.
Perform an open or short circuit test at each wiring harness connection to
identify the correct wiring harness to replace.
Perform this test only if the condition is active.
Test Step 1. Verify Transmission
Fluid Level.
Check for correct level of transmission Transmission Fluid Level Low - Add
fluid (TM 5-2420-231-10) using
transmission fluid to transmission
transmission dipstick (Figure 1, Item 1). (WP 0216).
Proceed to Test Step 6.
Transmission Fluid Level OK -
Proceed to Test Step 2.
Figure 1. Transmission Dipstick.
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Test Step 2. Verify Operation of Front
Display Screen.
1. Place powershift lever (Figure 2,
Item 1) in the N position (TM 5-
2420-231-10).
NOTE
Refer to How To Use On-Board Diagnostics (WP 0006) to understand the
front display screen indicators.
2. Turn ignition switch to the on posi-
Front Display Screen Indicates "nA"
tion (TM 5-2420-231-10).
- Proceed to step 3.
Front Display Screen Is Blank -
Perform Display and/or Backup Alarm
Does Not Turn On (WP 0043).
