TM 5-2420-231-23-1
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Table 1. Transmission Does Not Downshift When Transmission Kickdown Switch Is Activated.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Transmission Does Not
Downshift When
Always inspect the wiring harness connectors that are involved in the
Transmission Kickdown
circuit. Poor connections can often be the cause of a problem in an
Switch Is Activated
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
Kickdown Switch Input on Front
Display Screen.
1. Place powershift lever (Figure 1,
Item 3) 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. Press and hold the M button (Fig-
ure 1, Item 1) on the front display
panel (Figure 1, Item 2) (WP
0006), and turn the ignition switch
to the on position (TM 5-2420-231-
10).
Figure 1. Front Display Panel.
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