TM 5-2420-231-23-1
0056
Table 1. Transmission Has Uncommanded Shift into Neutral - Continued.
056
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 3. Verify Diagnostic Fault
Transmission Has
Codes.
Uncommanded Shift into
Neutral - Continued
NOTE
Refer to How To Use On-Board Diagnostics (WP 0006) to understand the
front display screen indicators.
1. Place powershift lever in the N
position (TM 5-2420-231-10).
2. Start and run machine (TM 5-
2420-231-10).
3. Apply and hold brake pedal (TM 5-
2420-231-10).
4. Place powershift lever in the R
position (TM 5-2420-231-10).
5. Place powershift lever in the F
position (TM 5-2420-231-10).
6. Check transmission controller for
Front Display Panel Illuminates "do
diagnostic faults (WP 0006).
FP" - Proceed to Test Step 4.
No Diagnostic Fault Codes are
Displayed and Transmission Does
Not Shift into Forward or Reverse -
Transmission is faulty. Replace
transmission (WP 0213).
Proceed to Test Step 6.
Test Step 4. Test Directional
Solenoids and Solenoid Control
Circuits for a Short.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect powershift connector
wiring harness connector (WP
0007, Figure 20) from transmission
controller (WP 0168).
3. Using a digital multimeter, mea-
Resistance 26 to 30 Ohms - Proceed
sure resistance between power-
to step 4.
shift connector wiring harness
Resistance Less Than 26 Ohms -
connector (WP 0007, Figure 20)
Replace transmission (WP 0213).
terminals D1 and B1. Resistance
Proceed to Test Step 6.
should be 26 to 30 ohms.
Resistance Greater Than 30 Ohms -
Proceed to Test Step 5.
4. Using a digital multimeter, mea-
Resistance 26 to 30 Ohms - Proceed
sure resistance between power-
to step 5.
shift connector wiring harness
Resistance Less Than 26 Ohms -
connector (WP 0007, Figure 20)
Replace transmission (WP 0213).
terminals E1 and B1. Resistance
Proceed to Test Step 6.
should be 26 to 30 ohms.
Resistance Greater Than 30 Ohms -
Proceed to Test Step 5.
0056-4