Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di at patterns
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DI-214
DIAGNOSTICS - AUTOMATIC TRANSMISSION
DI0T3-12
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, L position
and the lock-up patterns. Following the programs corresponding to the signals from the pattern select
switch, the park/neutral position and other various sensors, the ECM switches the solenoid valves ON and
OFF, and controls the transmission gear change and the lock-up clutch operation.
2002 4RUNNER (RM887U)
Author : Date : 390
DI-215
DIAGNOSTICS - AUTOMATIC TRANSMISSION
WIRING DIAGRAM
ECM
Engine Room R/B
120A ALT 40A AM1
W
2 2
1 2 1 2
W
I14
Ignition Switch
IG1 AM1
4 2
B-Y
Driver Side J/B Pattern Select Switch
2 10A GAUGE 9 PWR G-R
B-Y
1I 1F 3
4
NORM
J4
Junction ECT PWR
Connector
17 15 1
W-B G-R G-R
C27 C25 E12 PWR
A
Combination Meter
Battery
IE
D10516
2002 4RUNNER (RM887U)
Author : Date : 391
DI-216
DIAGNOSTICS - AUTOMATIC TRANSMISSION
INSPECTION PROCEDURE
1 Check PATTERN SEL SW signal.
When using TOYOTA hand-held tester:
PREPARATION:
(a) Remove the DLC3 cover.
(b) Connect a TOYOTA hand-held tester to the DLC3.
(c) Turn the ignition switch ON and TOYOTA hand-held tes-
ter main switch ON.
CHECK:
Read the PATTERN SEL SW signal on the TOYOTA hand-held
tester.
OK:
Pattern select switch PATTERN SEL SW signal
Pushed in ON
Pushed out OFF
When not using TOYOTA hand-held tester:
ON PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure voltage between terminal PWR of the ECM and body
ground when the pattern select switch set to the PWR (POW-
PWR ER) position and NORM (NORMAL) position.
(-) (+) OK:
D10517 Pattern select switch Voltage
PWR 9 - 14 V
NORM Below 1.5 V
HINT:
The ECM uses the normal pattern signal if the PWR signal is not
input.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-175 ).
NG
2002 4RUNNER (RM887U)
Author : Date : 392
DI-217
DIAGNOSTICS - AUTOMATIC TRANSMISSION
2 Check pattern select switch.
PREPARATION:
4 3
Disconnect the pattern select switch connector.
CHECK:
Check continuity between terminals 3 and 4 of pattern select
switch connector when the select switch is set to PWR and
NORM positions.
OK:
Pattern select switch Specified condition
D10520
PWR Continuity
NORM No continuity
NG Replace the pattern select switch.
OK
3 Check harness and connector between battery and pattern select switch, pattern
select switch and ECM (See page IN-28 ).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM (See page
IN-28 ).
2002 4RUNNER (RM887U)
Author : Date : 393
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