TM 5-2420-231-23-1
0051
Table 1. Transmission Does Not Shift into Forward - Continued.
051
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Using a digital multimeter, test for
Continuity - Install instrument panel
Transmission Does Not Shift
continuity between powershift con-
front cover (WP 0174).
into Forward - Continued
troller wiring harness connector
Replace powershift wiring harness (WP
(WP 0007, Figure 20) terminal K1
0167).
and machine ground. There should
Proceed to Test Step 38.
be no continuity.
No Continuity - Proceed to step 4.
3. Disconnect powershift wiring har-
ness (WP 0007, Figure 146) from
transmission (WP 0007, Figure
147).
4. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less - Install
sure resistance between power-
instrument panel front cover (WP 0174).
shift controller wiring harness
Replace transmission controller (WP
connector (WP 0007, Figure 20)
0168).
terminal K1 and powershift wiring
Connect powershift wiring harness
harness connector (WP 0007, Fig-
connector (WP 0007, Figure 146) to
ure 146) terminal M. Resistance
transmission (WP 0007, Figure 147).
should be 5.0 ohms or less.
Install front floor cover plate (WP 0306).
Proceed to Test Step 38.
Resistance Greater Than 5.0 Ohms -
Install instrument panel front cover (WP
0174).
Replace powershift wiring harness (WP
0167).
Proceed to Test Step 38.
Test Step 23. Test Modulation
Solenoid Control 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 (WP 0007, Figure 146) from
transmission (WP 0007, Figure
147).
5. Using a digital multimeter, test for
Continuity - Install instrument panel
continuity between powershift con-
front cover (WP 0174).
troller wiring harness connector
Replace powershift wiring harness (WP
(WP 0007, Figure 20) terminal C1
0167).
and all other terminals on harness.
Proceed to Test Step 38.
There should be no continuity.
No Continuity - Proceed to step 6.
0051-27
