Q07467
Cruise Control ECU
OD
OD1
B+
G
−
O
9
18
ECM
E7
BE3840
Q07658
D00091
ON
(
−
)
(+)
OD1
DI
−
172
−
DIAGNOSTICS
AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving with cruise control activated, in order to minimize gear shifting and provide smooth cruising on
an uphill, 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
DI
−
292
)
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal OD1 of the ECM and
body ground.
OK:
Voltage: 9
−
14 V
OK
Proceed to next circuit inspection shown on
problem symptoms table (See page
DI
−
147
).
NG
DI5L0
−
02
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Version 1.00 - 12/21/2010