TM 5-2420-231-23-1
0052
Table 1. Transmission Does Not Shift into Reverse - Continued.
052
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less - Install
Transmission Does Not Shift
sure resistance between power-
instrument panel front cover (WP 0174).
into Reverse - Continued
shift controller wiring harness
Replace transmission controller (WP
connector (WP 0007, Figure 20)
0168).
terminal B1 and powershift wiring
Connect powershift wiring harness
harness connector (WP 0007, Fig-
connector (WP 0007, Figure 146) to
ure 146) terminal H. 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 21. Test Modulation
Control Solenoids and Control
Circuits 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. Using a digital multimeter, mea-
Resistance 3.2 to 5.2 Ohms - Proceed
sure resistance between power-
to step 4.
shift controller wiring harness
Resistance Less Than 3.2 Ohms -
connector (WP 0007, Figure 20)
Install instrument panel front cover (WP
terminals C1 and K1. Resistance
0174).
should be 3.2 to 5.2 ohms.
Replace transmission (WP 0213).
Proceed to Test Step 38.
Resistance Greater Than 5.2 Ohms -
Proceed to Test Step 22.
4. Using a digital multimeter, mea-
Resistance 26 to 30 Ohms - Proceed
sure resistance between power-
to step 6.
shift controller wiring harness
Resistance Less Than 26 Ohms -
connector (WP 0007, Figure 20)
Install instrument panel front cover (WP
terminals H1 and K1. Resistance
0174).
should be 26 to 30 ohms.
Replace transmission (WP 0213).
Proceed to Test Step 38.
Resistance Greater Than 30 Ohms -
Proceed to Test Step 22.
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).
0052-26