TM 5-2420-231-23-1
0051
Table 1. Transmission Does Not Shift into Forward - Continued.
051
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Turn ignition switch to the off posi-
Transmission Does Not Shift
tion (TM 5-2420-231-10) and dis-
into Forward - Continued
connect batteries (WP 0157).
3. Disconnect front console wiring
harness connector (WP 0007, Fig-
ure 5) from main chassis wiring
harness connector (WP 0007, Fig-
ure 6).
4. Disconnect powershift wiring har-
ness connector (WP 0007, Figure
146) from transmission (WP 0007,
Figure 147).
5. Using a digital multimeter, test for
Continuity - Replace front console
continuity between front console
wiring harness (WP 0162).
wiring harness connector (WP
Proceed to Test Step 38.
0007, Figure 5) terminal 4D and all
No Continuity - Proceed to step 6.
other terminals on harness. There
should be no continuity.
6. Disconnect main chassis wiring
harness connector (WP 0007, Fig-
ure 101) from FWD/REV jumper
harness (WP 0007, Figure 102).
7. Using a digital multimeter, test for
Continuity - Install instrument panel
continuity between main chassis
front cover (WP 0174).
wiring harness connector (WP
Replace main chassis wiring harness
0007, Figure 6) terminal 4D and all
(WP 0154).
other terminals on harness. There
Proceed to Test Step 38.
should be no continuity.
No Continuity - Proceed to step 8.
8. 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 C2
0167).
and all other terminals on harness.
Proceed to Test Step 38.
There should be no continuity.
No Continuity - Install instrument panel
front cover (WP 0174).
Replace transmission controller (WP
0168).
Proceed to Test Step 38.
Test Step 34. Test Reverse Relay Coil
Voltage Supply Circuit for Voltage.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove reverse relay (WP 0007,
Figure 106) from front console wir-
ing harness connector (WP 0007,
Figure 105).
0051-40