Specifications

AUTOMATIC TRANSMISSION -
Troubleshooting
23-33
INSPECTION PROCEDURE 11
All points (Displaced shifting points)
Probable cause
If all shift points are displaced while driving, the cause is probably a malfunction
of the output shaft speed sensor, TPS or of a solenoid valve.
D Malfunction of the output shaft speed sensor
D Malfunction of the throttle position sensor
D Malfunction of each solenoid valve
D Abnormal line pressure
D Malfunction of the valve body
D Malfunction of the A/T-ECU
L
: Refer to the Transmission Workshop Manual.
MUT-
II
Data list
D No. 23 Output shaft speed sensor
OK:
Increases i n proportion to vehicle speed.
NG
Code No. 23 - Output shaft speed sensor system (Refer to P.23-17.)
OK
MUT-
II
Data list
D No. 11 TPS/APS
OK:
Increases in proportion to accelerator pedal opening angle
NG
Code No. 11, 12, 14 TPS/APS system check (Refer to P.23-15.)
OK
MUT-
II
Data list
D No. 31 Low and reverse solenoid valve duty %
D No. 32 Underdrive solenoid valve duty %
D No. 33 Second solenoid valve duty %
D No. 34 Overdrive solenoid valve duty %
OK:
Refer to the table below.
NG
Replace the solenoid valve. L
NG
Repalce the A/T-ECU.
OK
Adjust the line pressure. (Refer to P.23-62.)
NG
Valve body disassembly, cleaning and reassembly L
D Pay particular attention to loosening of bolts, and to damage
and slippage of O-rings, valves and valve bodies.
D If the damage cannot be repaired, replace the valve body
assembly.
No. 31 No. 32 No. 33 No. 34
Driving at constant speed in 1st gear 0% 0% 100 % 100 %
Driving at constant speed in 2nd gear 100 % 0% 0% 100 %
Driving at constant speed in 3rd gear 100 % 0% 100 % 0%
Driving at constant speed in 4th gear 100 % 100 % 0% 0%