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Page Title:
Table 1. Transmission Troubleshooting Procedures - Continued. |
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 TM 9-2320-303-24-1
Table 1. Transmission Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TRANSMISSION - CONTINUED
2. Vehicle Does Not Start (Engine Does Not 7. Voltage to ECU too low.
Check battery and charging
Crank) - Continued.
system voltage (WP 0010 00).
8. Faulty shift selector.
Replace shift selector (WP 0107
9. Lack of battery voltage on Repair circuit 123 (WP 0072 00)
circuit 123 from ECU when in or replace ECU (WP 0110 00).
neutral.
3.
All Display Segments on Both Sides of Display No calibration installed in ECU. Check battery and charging
Lighted.
Voltage to ECU too low.
system voltage (WP 0010 00).
TRANSMISSION SHIFTING
1.
ECU Will Not Turn Off When Ignition Switch Faulty ignition switch.
Replace ignition switch (WP 0066
Is Turned Off.
2.
Transmission Will Not Shift to Forward or 1. Engine RPM too high.
Reduce engine RPM.
Reverse (Stays In Neutral).
2. Low transmission fluid level.
Add fluid to proper level (TM 9-
2320-303-10).
3. Transmission fluid temperature Warm transmission fluid.
too low.
4. Throttle position sensor set-up Refer to throttle position sensor
is incorrect.
for correct set-up (WP 0006 00).
5. Voltage to ECU too low.
Check vehicle battery and
charging system (WP 0010 00).
6. Shift selector is not functioning Replace shift selector (WP 0107
properly.
7. Disconnected
or
dirty Perform connector checkout.
connectors.
8. Faulty wiring harnesses.
Repair harness (WP 0098 00).
9. Faulty ECU.
Replace ECU (WP 0110 00).
3.
Transmission Will Not Stay in Forward or Auto-neutral or quick-to-neutral Repair transmission (WP 0248
Reverse.
circuit (input function) faulty.
00).
4.
Transmission Will Not Make a Specific Shift. 1. Low engine power.
Correct engine problem (WP 0006
2. Incorrect transmission fluid Correct fluid level (TM 9-2320-
level.
303-10).
3. Extreme transmission
fluid Inspect cooling system and fluid
temperature.
level (WP 0009 00).
4. Faulty shift selector.
Replace shift selector (WP 0107
0021 00-2
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