
AT2–111
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION – TROUBLESHOOTING
O D Cancel Signal Circuit
— CIRCUIT DESCRIPTION —
While driving with cruise control activated, in order to minimize gear shifting and provide smooth up–hill
cruising, overdrive may be prohibited temporarily in some conditions.
The Cruise Control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive
shifting until these signals are discontinued.
(For details see the cruise control section, page BE–162)
— WIRING DIAGRAM —
Cruise Control ECU ECM
4 — 6 V
OD C16 9 BR-B 11 U2 BR-B 12 OD1 E10
Q04434
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM connector and body ground.
ON
Check Harness A
ECM
A 12 OD1
BE6653
AT8774
P 1. Connect the Check Harness A to the ECM
2. Turn ignition switch ON.
C Measure voltage between terminal OD1 of ECM
connector and body ground.
OK Voltage: 4 — 6 V
NG OK Proceed to next circuit inspection shown on ma-
trix chart (See page AT2–64).
Go to 2 .