
AT2–108
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING
O D Main Switch & O D OFF Indicator Light Circuit
— CIRCUIT DESCRIPTION —
The O/D main switch contacts go off when the switch is pushed in and comes on when it is pushed out.
In O/D main switch OFF position the O/D OFF indicator lights up, and the ECM prohibits shifting to over-
drive. The ECM also causes the O/D OFF indicator light to blink when a malfunction is detected. In this
case, connecting the terminals in the DLC2 or DLC1 can display the malfunction code.
— WIRING DIAGRAM —
5 1J
GAUGE
J/B No.1
12 1E
O/D OFF
Indicator Light
Y 1 2
V-G 5 V-G 28 OD2
II1 E10
V-G
IF3 3
V-G V-G → To DLC2
2
O/D Main (*)
Switch
4
W-B
1E
ECM
(*) O/D Main Switch
Contacts go off with button pushed in.
Contacts go on with button pushed out.
Q06898