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AT1-89
AT340E (2JZ-GE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING
INSPECTION PROCEDURE
O/D OFF indicator light does not light up.
1 Check operation of O/D main switch.
ON
OFF ON
O/D button O/D OFF Indicator Light O/D Main Switch Point
Push in O/D OFF OFF
Push out O/D OFF ON
BE6653 G04238
AT5623
C 1. Turn ignition switch ON.
2. Check "O/D OFF" indicator light when O/D main switch is pushed in to ON.
OK "O/D OFF" indicator light goes off.
C 3. Check "O/D OFF" indicator light when O/D main switch is pushed again, to OFF.
OK "O/D OFF" indicator light lights up.
Hint If the "O/D OFF" indicator light blinks when the O/D main switch is pushed in to ON, a malfunction is occurring in the system.
Check the diagnostic trouble code.
OK
NG Go to step 4 .
2 Check voltage between terminal OD2 of ECM connector and body ground.
ON
Check Harness A
ECM
A 28 OD2
BE6653
AT8773
P 1. Connect the Check Harness A to the ECM (See page EG-404).
2. Turn ignition switch ON.
C Check voltage between terminal OD2 of the ECM and body ground.
OK
O/D Main Switch | Voltage
OFF | Below 3 V
ON | 9 – 14 V
NG
OK Proceed to next circuit inspection shown on matrix chart (See page AT1-58).
3 Check harness and connecter between O/D off indicator light and ECM (See page IN-30).
OK
NG Repair or replace harness or connector.
Check and replace ECM.