TM 5-2420-231-23-1
0056
Table 1. Transmission Has Uncommanded Shift into Neutral - Continued.
056
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Using a digital multimeter, mea-
Transmission Has
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 6.
Uncommanded Shift into
shift connector wiring harness
Neutral - Continued
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal G1 and powershift wiring
0167).
harness connector terminal F (WP
Proceed to Test Step 6.
0007, Figure 146). Resistance
should be 5.0 ohms or less.
6. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 7.
shift connector wiring harness
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal J1 and powershift wiring
0167).
harness connector terminal E (WP
Proceed to Test Step 6.
0007, Figure 146). Resistance
should be 5.0 ohms or less.
7. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 8.
shift connector wiring harness
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal F1 and powershift wiring
0167).
harness connector terminal C (WP
Proceed to Test Step 6.
0007, Figure 146). Resistance
should be 5.0 ohms or less.
8. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 9.
shift connector wiring harness
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal B1 and powershift wiring
0167).
harness connector (WP 0007, Fig-
Proceed to Test Step 6.
ure 146) terminal H. Resistance
should be 5.0 ohms or less.
9. Using a digital multimeter, test for
Continuity - Replace powershift wiring
continuity between powershift con-
harness (WP 0167).
nector wiring harness connector
Proceed to Test Step 6.
(WP 0007, Figure 20) terminals F1
No Continuity - Proceed to step 10.
and A1. There should be no conti-
nuity.
10. Using a digital multimeter, test for
Continuity - Replace powershift wiring
continuity between powershift con-
harness (WP 0167).
nector wiring harness connector
Proceed to Test Step 6.
(WP 0007, Figure 20) terminals G1
No Continuity - Replace transmission
and A1. There should be no conti-
controller (WP 0168).
nuity.
Proceed to Test Step 6.
Test Step 6. Verify That Symptom Is
Resolved.
1. Ensure that all wring harness con-
nectors are connected.
0056-7