ATTE/A340 Automatic Trans (GTE) — Pattern Select Switch Circuit, page 105

AT2–105

A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING

Pattern Select Switch Circuit

— CIRCUIT DESCRIPTION —

The ECM memory contains the shift programs for the NORMAL and MANUAL patterns, 2 position, L position and the lock–up patterns. Following the programs corresponding to the signals from the pattern select switch, the park/neutral position switch and other various sensors the ECM switches the solenoid valves ON and OFF, thereby controlling the transmission gear change and the lock–up clutch operation.

— WIRING DIAGRAM —

Combination Meter

12     W-L     38     W-L     25
                    II1          E10     M1

Pattern Select
Switch
MANUAL
4     G-Y     12     G-Y     18
W-B     3                IJ2          E10     M
NORMAL

IE

ECM

Q04319