TM 5-2420-231-23-1
0057
Table 1. Transmission Has Uncommanded Upshift - Continued.
057
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. Using a digital multimeter, mea-
Transmission Has
Resistance 5.0 Ohms or Less -
sure resistance between power-
Proceed to step 13.
Uncommanded Upshift -
shift connector wiring harness
Continued
Resistance Greater Than 5.0 Ohms -
connector (WP 0007, Figure 20)
Replace powershift wiring harness (WP
terminal E1 and powershift wiring
0167).
harness connector terminal B (WP
Proceed to Test Step 5.
0007, Figure 146). Resistance
should be 5.0 ohms or less.
13. 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 5.
connector (WP 0007, Figure 20)
Resistance Greater Than 5.0 Ohms -
terminal B1 and powershift wiring
Replace powershift wiring harness (WP
harness connector (WP 0007, Fig-
0167).
ure 146) terminal H. Resistance
Proceed to Test Step 5.
should be 5.0 ohms or less.
Test Step 4. Test Low/High Solenoid,
Solenoid Control, and Ground
Circuits for an Open or Short to
Voltage.
1. Remove instrument panel front
cover (WP 0174).
2. Disconnect powershift connector
wiring harness connector (WP
0007, Figure 20) from transmission
controller (WP 0168).
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 5.
(WP 0007, Figure 20) terminals A1
No Continuity - Proceed to step 6.
and D1. There should be no conti-
nuity.
6. 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) terminals A1
No Continuity - Proceed to step 7.
and E1. There should be no conti-
nuity.
0057-5