O/D Cancel Signal Circuit (5Vz−Fe Only) - Toyota T100 1996 Service Manual

O/D Cancel Signal Circuit (5VZ−FE only)
CIRCUIT DESCRIPTION
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruis-
ing overdrive may be prohibited temporarily under some condition.
The cruise control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels O/D shifting
until these signals are discontinued.
WIRING DIAGRAM
Cruise Control Actuator with ECU
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
ON
(−)
(+)
NG
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS
9
OD
C17
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD1 of ECM and body
ground.
OK:
OD1
D00053
OK
− AUTOMATIC TRANSMISSION
7
Y−R
E4
Voltage: 4 − 6 V
Proceed to next circuit inspection shown on
problem symptoms table (See page DI−282).
ECM
B+
OD1
DI−309
DI0W9−02
Q00758