Toyota Camry Manual page 313

AX2–126
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, and L
position and the lockup 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 transaxle gear change and the lockup clutch operation.
DIAGNOSTIC CHART
Check voltage between terminal P of ECM
connector and body ground.
Check pattern select switch.
Check harness and connector between
ECM and pattern select switch, pattern
select switch and battery (See page
Check and replace ECM.
WIRING DIAGRAM
AUTOMATIC TRANSAXLE –
IN–31
).
TROUBLESHOOTING
Proceed to next circuit inspection
shown on matrix chart (See page
AX2–81
) .
Replace pattern select switch.
Repair or replace harness or con–
nector.