Page 889 of 4323
D14237L4
4WD Control ECU: F23
D14167
ECM:
E8E7E6E5E4
L4(+)
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±687
881 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Inspect terminal voltage (L4 ± body ground).
PREPARATION:
Disconnect the 4WD control ECU connector and turn the igni-
tion switch ON.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester ConnectionSpecified Condition
F23 ± 24 (L4) ± Body ground10 to 14 V
NG Check and replace 4WD control ECU
(See page TR±39).
OK
2 Inspect terminal voltage (L4 ± body ground).
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester ConnectionSpecified Condition
E6 ± 13 (L4) ± Body ground10 to 14 V
NG Replace the ECM (See page SF±80).
OK
Repair or replace the harness or connector
(See page IN±35).
Page 890 of 4323
D14232
J12
J/C AL±W
ODMS E412ECM O3
O/D
Main SW
W±B
IF3
1 DI±688
± DIAGNOSTICSAUTOMATIC TRANSMISSION
882 Author: Date:
2005 SEQUOIA (RM1146U)
O/D Main Switch Circuit
CIRCUIT DESCRIPTION
The O/D main switch (transmission control switch) is a momentary type switch. When pressing the O/D main
switch once, the O/D OFF indicator light comes on and the ECM prohibits shifting into O/D. When pressing
it once again, the O/D OFF indicator light goes off and the ECM allows shifting into O/D. Turning the IG switch
OFF will reset the O/D OFF indicator light.
WIRING DIAGRAM
DIDJR±01
Page 891 of 4323
D14181
Wire Harness Side:
(Connector Front View):
O3
D14182
Switch Side:
(Connector Front View):
O3
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±689
883 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (O/D main switch ± body ground)
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
1 ± Body groundBelow 1 W
NG Repair or replace the harness or connector
(See page IN±35).
OK
2 Inspect O/D main switch.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Switch ConditionTester ConnectionSpecified Condition
O/D main switch pressed
and held1 ± 3Below 1 W
O/D main switch released=10 kW or higher
NG Replace O/D main switch (See page AT±18).
OK
Page 892 of 4323
D14183
E8E7E6E5E4ECM:
ODMS
DI±690
± DIAGNOSTICSAUTOMATIC TRANSMISSION
884 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (O/D main switch ± ECM).
PREPARATION:
(a) Connect the O/D main switch connector.
(b) Disconnect the connector from the ECM.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Switch ConditionTester ConnectionSpecified Condition
O/D main switch pressed
and heldE4 ± 12 (ODMS) ±
Body groundBelow 1 W
O/D main switch released=10 kW or higher
NG Repair or replace harness or connector
(See page IN±35).
OK
Proceed to next circuit inspection shown on
matrix chart (See page DI±553).
Page 893 of 4323
D14233
ECM
LMS E5 P±L
I22
GND2LO
IGOO
J43
J/C1019 Integration Control and Panel
I19
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±691
885 Author: Date:
2005 SEQUOIA (RM1146U)
Shift Position L Switch Circuit
CIRCUIT DESCRIPTION
The shift position L switch is a momentary type switch. When the shift position L switch is pressed while
driving with the shift lever in the 2 position, the L position indicator on the combination meter comes on and
the transmission is locked in 1st gear. When the switch is pressed again, the indicator goes off and the trans-
mission is released.
WIRING DIAGRAM
DIDJS±01
Page 894 of 4323
D14180
Wire Harness Side:
(Connector Front View):
I19
DI±692
± DIAGNOSTICSAUTOMATIC TRANSMISSION
886 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
1 Check harness and connector (shift position L switch ± body ground).
PREPARATION:
Remove the center cluster integration panel assembly (shift
position L switch).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionSpecified Condition
10 ± Body groundBelow 1 W
NG Repair or replace harness or connector
(See page IN±35).
OK
Page 895 of 4323
D14236
I19I22GND2LO
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±693
887 Author: Date:
2005 SEQUOIA (RM1146U)
2 Inspect center cluster integration panel (shift position L switch).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Switch ConditionTester ConnectionSpecified Condition
Shift position L switch
pressed and heldI22 ± 1 (2LO) ±
I19 ± 10 (GND)Below 1 W
Shift position L switch
released=10 kW or higher
NG Replace center cluster integration panel
(shift position L switch).
OK
Page 896 of 4323
D14184
E8E7E6E5E4ECM:
LMS
DI±694
± DIAGNOSTICSAUTOMATIC TRANSMISSION
888 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check harness and connector (shift position L switch ± ECM).
PREPARATION:
(a) Install the center cluster integration panel assembly (shift
position L switch).
(b) Disconnect the connector from the ECM.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Switch ConditionTester ConnectionSpecified Condition
Shift position L switch
pressed and heldE5 ± 9 (LMS) ±
Body groundBelow 1 W
Shift position L switch
released=10 kW or higher
NG Repair or replace harness or connector
(See page IN±35).
OK
Proceed to next circuit inspection shown on
matrix chart (See page DI±553).