Toyota Camry Manual page 312

Check harness and connector between O/D off indicator light and ECM.
Check and replace ECM.
Check O/D Main Switch.
Check and replace combination meter. (See com–
bination meter troubleshooting.)
AUTOMATIC TRANSAXLE – TROUBLESHOOTING
Repair or replace harness or connector.
1. Disconnect O/D main switch connector.
2. Measure resistance between terminals 1 and 3
of O/D main switch connector.
O/D Main Switch
OFF
Replace O/D Main Switch.
AX2–125
Resistance
^ 9 (open)
0 S2 (continuity)