TM 5-2420-231-23-1
0057
Table 1. Transmission Has Uncommanded Upshift - Continued.
057
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Remove instrument panel front
Transmission Has
cover (WP 0174).
Uncommanded Upshift -
Continued
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 5.
should be 26 to 30 ohms.
Resistance Greater Than 30 Ohms -
Proceed to step 13.
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 5.
should be 26 to 30 ohms.
Resistance Greater Than 30 Ohms -
Proceed to step 13.
5. Remove front floor cover plate
(WP 0306).
6. Disconnect powershift wiring har-
ness connector (WP 0007, Figure
146) from transmission (WP 0007,
Figure 147) (WP 0167).
7. 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 5.
(WP 0007, Figure 20) terminal D1
No Continuity - Proceed to step 8.
and machine ground.
8. 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 5.
(WP 0007, Figure 20) terminal E1
No Continuity - Replace transmission
and machine ground.
controller (WP 0168).
Proceed to Test Step 5.
9. Remove front floor cover plate
(WP 0306).
10. Disconnect powershift wiring har-
ness connector (WP 0007, Figure
146) from transmission (WP 0007,
Figure 147) (WP 0167).
11. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 12.
shift connector wiring harness
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal D1 and powershift wiring
0167).
harness connector terminal D (WP
Proceed to Test Step 5.
0007, Figure 146). Resistance
should be 5.0 ohms or less.
0057-4