TM 9-2320-387-24-2
Table 14-1. Mechanical
l?oubleshooting
(Cont’d).
MALFUNCTION
TEST OR INSPECTION
I
b. Shift solenoid B (2-3) may not function properly (1st and 2nd gears only, 2nd gear only, 3rd and 4th
gears only).
Step 1.
Disconnect transmission electrical connector.
Step 2.
Check resistance between pins B and E. Resistance should be between 18 to 24 ohms.
Step 3.
If resistance at connector is high or low, proceed to step 4.
Step 4.
Check wires to solenoid for open or short circuits and bad connections. Replace internal
harness if damaged (para. 28-3). If ok, proceed to step 5.
Step 5.
Replace solenoid (para. 28-17).
END OF TESTING!
c. Force motor (pressure control solenoid) may not function properly (harsh shifting and soft shift).
Step 1.
Disconnect transmission electrical connector.
Step 2.
Check resistance between pins C and D. Resistance should be between 3.5 to 5.0 ohms.
Step 3.
If resistance at connector is high or low, proceed to step 4.
Step 4.
Check wires to solenoid for open or short circuits and bad connections. Replace internal
harness if damaged (para. 28-3). If ok, proceed to step 5.
Step 5.
Replace solenoid (para. 28-17).
END OF TESTING!
d. Torque converter clutch solenoid (no 4th gear, or clutch stuck on).
Step 1.
Disconnect transmission electrical connector.
Step 2.
Check resistance between pins S and E. Resistance should be between 10 to 14 ohms.
Step 3.
If resistance at connector is high or low, proceed to step 4.
Step 4.
Check wires from connector to solenoid for breaks or shorts. Replace internal harness
if damaged (para. 28-3). If ok, proceed to step 5.
Step 5.
Replace solenoid (para. 28-17).
END OF TESTING!
e. Transmission fluid temperature sensor may not function properly (incorrect TCC apply and
release).
step 1.
Disconnect transmission electrical connector.
Step 2.
Check resistance between pins M and L (the resistance should be high at low
temperatures and low at high temperatures).
(a)
(b)
(c)
(d)
The resistance at connector at 32°F (0°C) should be be less than 11,000 ohms and
more than 7,800 ohms.
The resistance at connector at 68°F (20°C) should be less than 4,100 ohms and more
than 2,900 ohms.
The resistance at connector at 104°F (40°C) should be less than 1,700 ohms and
1,200 ohms.
The resistance at room temperature (72°F) should be between 2,500 and 5,000 ohms.
If any of the above conditions are not met, replace transmission fluid temperature sensor
(para. 2817).
Step 3.
Check wires from connector to sensor for breaks or shorts. Replace internal harness
if damaged (para. 28-3).
END OF TESTING!
14-8
