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DI-218
DIAGNOSTICS - AUTOMATIC TRANSMISSION
DI1CP-14
O/D Main Switch & O/D OFF Indicator Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch is a momentary type switch. When pressing the O/D OFF main switch, the O/D OFF
indicator light lights up and ECM prohibit shifting to O/D, and when pressing it again, the O/D OFF indicator
light goes off and ECM allows shifting to O/D. Turning the IG switch OFF will reset the O/D OFF indicator
light.
WIRING DIAGRAM
ECM
Driver Side J/B
O/D OFF
2 10A GAUGE 8 12 1 20
B-Y G-Y
1I 1F C29 C26 E12 ODLP
B-Y
I14
Ignition Switch
IG1 AM1
4 2
W
Engine Room R/B
120A ALT 40A AM1
W
2 2
1 2 1 2
J9
Junction Center J/B S3
Connector O/D Main Switch
16 22 14
W-B W-B L-W
3E 3E E12 ODMS
A 10 5
Battery IF
2002 4RUNNER (RM887U) D10513
Author : Date : 394
DI-219
DIAGNOSTICS - AUTOMATIC TRANSMISSION
INSPECTION PROCEDURE
1 Check operation of O/D main switch.
PREPARATION:
Turn the ignition switch ON.
CHECK:
(a) Check O/D OFF indicator light when O/D main switch is
pushed in to ON.
(b) Check O/D OFF Indicator light when O/D main switch is
pushed again.
OK:
(a) O/D OFF indicator light lights up.
(b) O/D OFF indicator light goes off.
OK Proceed to next inspection shown on problem
symptoms table (See page DI-175 ).
NG
2 Check and replace combination meter (See page BE-45 ).
NG Replace the combination meter.
OK
3 Check O/D main switch.
PREPARATION:
5 Disconnect the O/D main switch connector.
CHECK:
4 32 1
Check continuity between 5 and 10 of the O/D main switch con-
98 76 nector.
OK:
10 O/D main switch condition Specified condition
Press continuously O/D main switch Continuity
Q30003
Release O/D main switch No continuity
NG Replace and repair O/D main switch.
OK
2002 4RUNNER (RM887U)
Author : Date : 395
DI-220
DIAGNOSTICS - AUTOMATIC TRANSMISSION
4 Check voltage between terminal ODMS of ECM and body ground.
PREPARATION:
ON
Turn the ignition switch ON.
CHECK:
Check voltage between terminal ODMS of the ECM and body
ground when O/D main switch is ON and OFF.
OK:
ODMS O/D main switch Specified voltage
(-) (+)
Press continuously O/D main switch Below 1.5 V
D10514
Release O/D main switch 9 - 14 V
OK Check and replace the ECM (See page IN-28 ).
NG
5 Check voltage between terminal ODLP of ECM and body ground.
PREPARATION:
ON (a) Disconnect the connector of ECM.
ODLP (b) Turn the ignition switch ON.
CHECK:
Check voltage between terminal ODLP of the ECM and body
ground.
OK:
(-) (+)
O/D main switch Specified voltage
D10515
Press continuously O/D main switch Below 3 V
Release O/D main switch 9 - 14 V
OK Check and replace the ECM (See page IN-28 ).
NG
Check and replace harness and connector between combination meter and ECM, O/D main
switch and ECM, O/D main switch and body ground (See page IN-28 ).
2002 4RUNNER (RM887U)
Author : Date : 396
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