TM 5-2420-231-23-1
0055
Table 1. Transmission Does Not Shift into Third or Fourth Gear - Continued.
055
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Using a digital multimeter, test for
Continuity - Replace powershift wiring
Transmission Does Not Shift
continuity between powershift con-
harness (WP 0167).
into Third or Fourth Gear -
nector wiring harness connector
Proceed to Test Step 7.
Continued
(WP 0007, Figure 20) terminal D3
No Continuity - Proceed to step 6.
and all other terminals on harness
connector. There should be no
continuity.
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 D3 and powershift wiring
0167).
harness connector (WP 0007, Fig-
Proceed to Test Step 7.
ure 146) terminal A. Resistance
should be 5.0 ohms or less.
7. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between power-
Replace transmission (WP 0213).
shift connector wiring harness
Proceed to Test Step 7.
connector (WP 0007, Figure 20)
Resistance Greater Than 5.0 Ohms -
terminal B2 and powershift wiring
Replace powershift wiring harness (WP
harness connector (WP 0007, Fig-
0167).
ure 146) terminal J. Resistance
Proceed to Test Step 7.
should be 5.0 ohms or less.
Test Step 4. Test Turbine Speed
Sensor Signal Circuit for a Short.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove instrument panel front
cover (WP 0174).
3. Remove front floor cover plate
(WP 0306).
4. Disconnect powershift wiring har-
ness connector (WP 0007, Figure
146) from transmission (WP 0007,
Figure 147) (WP 0167).
5. 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 7.
(WP 0007, Figure 20) terminal D3,
No Continuity - Replace transmission
all other terminals on harness, and
(WP 0213).
machine ground. There should be
Proceed to Test Step 7.
no continuity.
0055-4