Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf ewdtmc2 ewdtmpdf ewdsourc 2002 024runne systemci 035ea
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ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
FROM POWER SOURCE SYSTEM (SEE PAGE 48)
1
20A 10A 10A 7. 5A
EFI STOP IGN STA
2
2 2 1F 10 1F 6 1F
GR- B L- B L- B L- B L- B
I20 I20 I20
B- L
L- R
L- B
L- B
L- B
L- B
I12
2 2
G- Y
L- R
B
1 EC1
1 5
7 IG1 14 IG1
B- L
EFI RELAY
BR
A/T FLUID TEMP. SENSOR
2 3 2 1 1
ENGINE COOLANT
THROTTLE POSITION
2 3
STOP LIGHT SW
TEMP. SENSOR
2 3E
2 2
SENSOR
S4
1 4 1 2
E3
A3
2 4 3 1 3E
T2
GR- B
G- W
W- B
W- L
L- R
G- Y
G- B
15 3C
G- B G- B
R- B
I20
G- Y
2 EC1
G- B
11 3C
B- Y
B- L
B
G- W
L- R
L- B
G
16 E 4 E 20 E 9 D 15 E 19 A 11 A 18 A 4 C 25 A 15 A 3 D
BATT MREL STP ST- IGSW THOC E2 THW VTA2 VC VTA NSW
E 9 A , E10 B , E11 C , E12 D , E14 E
ENGINE CONTROL MODULE
JUNCTION CONNECTOR
A B
J2 B
+B SL S1 S2 SLT+ SLT- SP2- SP2+
J1 A ,
A A 1 E 1 A 3 A 2 A 5 C 11 C 22 B 23 B
W- L
D
W- R
L- W
Y- R
R- Y
Y- B
P- L
LG
A
W- L
D
A
(ELECTRONICALLY CONTROLLED
W- B
1 IG1
J7 A 7 4 8 2
W- L
JUNCTION
VEHICLE SPEED SENSOR
CONNECTOR
2
NO. 1
NO. 2
TRANSMISSION)
SL
1
V3
6
E2
ELECTRONICALLY
CONTROLLED
TRANSMISSION SOLENOID
EB
2002 4RUNNER (EWD471U)
136
FROM POWER SOURCE SYSTEM (SEE PAGE 48)
1
15A
ETCS
2
2
L- B
F7
4WD ECU
G
GR- B(4WD) 16 17 W- R(4WD)
C/C D
24 IG1
W- R(4WD)
W- R(2WD)
L- B
A38
ACCEL
POSITION LG
2 SENSOR
E2 V
W- L
VC VPA VPA2 G- R
1 3 4
Y
(4WD)
G- Y
GR- B(4WD)
G- B
W- R(2WD)
GR
10 8
L
(4WD)
G- O G- O
G- R
W- L
G- Y
LG
G
V
Y
3E 3E
8 E 10 C 15 C 25 D 4 D 5 D 6 D 1 D 21 D 20 D 6 E 14 D
+BM VPA VPA2 D L 2 R PWR OILW ODLP SP1 ODMS
L- W
CONTROL COMPUTER]
E 9 A , E10 B , E11 C , E12 D , E14 E
ENGINE CONTROL MODULE O/D MAIN SW 5
[SHIFT LOCK
ME01 E04 E03 E02 E01 E1 L4 TFN
S3
6 A 8 A 7 A 5 A 4 A 17 B 2 D 11 D 10
(4WD)
(4WD)
B- R
L- R
B- R B- R
(4WD) (4WD)
B B C B C B
W- B
J7 A , J8 B
W- B
W- B
W- B
W- B
W- B
BR
JUNCTION
CONNECTOR
22 3E
B A A A
18
CONNECTOR
C W- B
JUNCTION
3E
(4WD)
(4WD)
B- R
(4WD)
L- R
C
16 3E
J3
22 II4
(4WD)
W- B
B- R
(4WD)
7 II4
(TRANSFER NEUTRAL
1
W- B
L- R
(4WD)
DETECTION SW
1 3 II2
POSITION)
DETECTION SW
A
(TRANSFER L4
J9
POSITION)
2 JUNCTION
(4WD)
D5
W- B
(4WD)
CONNECTOR
W- B
2
D4
EC IF
W- B
I20
(4WD)
2002 4RUNNER (EWD471U)
137
ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
FROM POWER SOURCE SYSTEM (SEE PAGE 48)
20
B- Y B- Y
II4 P1
A/T INDICATOR LIGHT SW
7 1F 3 [PARK/NEUTRAL POSITION SW]
RB
10A
GAUGE
C23
ELECTRONICALLY LL 2L DL NL RL PL
CONTROLLED
TRANSMISSION 8 4 7 5 2 1
PATTERN SELECT SW 9 1F 8 1F
W- R
[CENTER CLUSTER SW]
W- L
B- R
L- Y
LG
V
NORM
4 B- Y B- Y
3 4 II1 5 II1 10 II1 1 II1 19 II4 2 II1
PWR
G- R
W- R
W- L
B- R
L- Y
LG
V
W- R(4WD)
W- R(2WD)
LG LG
I21
V V 4 1D
I21
3
W- L W- L
1D
G- R G- R
I13
W- R(4WD)
5 1H
Y
W- R
(4WD)
JUNCTION CONNECTOR
G- Y
C A C A
J8 B
G- O
J7 A ,
A B A B
W- R(2WD)
(4WD)
W- R
G- O
G- R
W- L
V18
G- Y
B- R
B- Y
L- Y
LG
Y
V
VSC ECU
SP1
16
GR- L
3 D 1 C 1 A 15 A 12 B 7 C 6 C 5 C 4 C 3 C 2 C
1
A/T OIL TEMP.
D
ECT PWR
O/D OFF
D
N
R
P
L
2
SPEEDOMETER
A/T P
B- R
(4WD)
17 E 14 A
C25 A , C26 C , C27 E , C28 D , C29 B
COMBINATION METER
B- R
(4WD)
W- B
A
J4
JUNCTION
CONNECTOR
IE
2002 4RUNNER (EWD471U)
138
SYSTEM OUTLINE
Previous automatic transmissions have selected each gear shift using mechanically controlled throttle hydraulic pressure,
governor hydraulic pressure and lock-up hydraulic pressure. The electronically controlled transmission, however, electrically
controls the governor pressure and lock-up through the solenoid valve. Control of the solenoid valve by the engine control
module based on the input signals from each sensor makes smooth driving possible by shift selection for each is most
appropriate to the driving conditions at that time.
1. GEAR SHIFT OPERATION
During driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,
based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module and also the
input signals to TERMINAL SP2+ of the engine control module from the vehicle speed sensor devoted to the electronically
controlled transmission. Current is then output to the electronically controlled transmission solenoid.
When shifting to 1st speed, current flows from TERMINAL S1 of the engine control module to TERMINAL 4 of the
electronically controlled transmission solenoid to GROUND, and continuity to the no. 1 solenoid causes the shift.
For 2nd speed, current flows from TERMINAL S1 of the engine control module to TERMINAL 4 of the electronically
controlled transmission solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 8 of the
electronically controlled transmission solenoid to GROUND. And continuity to solenoid no.1 and no.2 causes the shift.
For 3rd speed, there is no continuity to no.1 solenoid, only to no.2 causing the shift. Shifting into 4th speed (Overdrive) takes
place when there is no continuity to the either no. 1 or no.2 solenoid.
2. LOCK-UP OPERATION
When the engine control module judges from each signal that lock-up operation conditions have been met, current flows
from TERMINAL SL of the engine control module to TERMINAL 7 of the electronically controlled transmission solenoid to
GROUND, causing continuity to the lock-up solenoid and causing lock-up operation.
3. STOP LIGHT SW CIRCUIT
If the brake pedal is depressed (Stop light SW on) when driving in lock-up condition, a signal is input to TERMINAL STP of
the engine control module, the engine control module operates and continuity to the lock-up solenoid is cut.
4. OVERDRIVE CIRCUIT
O/D main SW on
When the O/D main SW is turned on, a signal is input to TERMINAL ODMS of the engine control module and engine
control module operation causes gear shift when the conditions for overdrive are met.
O/D main SW off
When the O/D main SW is turned off, a signal is input into TERMINAL ODMS of the engine control module, and turns on
the O/D off indicator light. This activates the ECU, and the transmission system is controlled not to shift to overdrive.
5. A/T OIL TEMP. WARNING
When the A/T fluid temp. sensor affixed to the transmission case detects that the fluid temp. is 150_C (302_F) or more, the
engine control module operates and the current flowing through the GAUGE fuse flows to the A/T oil temp. warning light to
TERMINAL OILW of the engine control module to GROUND, so that warning light lights up, informing that the A/T oil temp. is
high. When the A/T oil temp. drops to 120_C (248_F) or less, the engine control module stops operating and the warning
light goes out.
2002 4RUNNER (EWD471U)
139
ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
SERVICE HINTS
P1 A/T INDICATOR LIGHT SW [PARK/NEUTRAL POSITION SW]
3-GROUND : Approx. 12 volts with ignition SW at ON position
S4 STOP LIGHT SW
1-2 : Closed with brake pedal depressed
E9 (A), E10 (B), E11 (C), E12 (D), E14 (E) ENGINE CONTROL MODULE
S1-E1 : 9- 14 volts
S2-E1 : 9- 14 volts
SL-E1 : 9- 14 volts
STP-E1 : 7.5- 14 volts with brake pedal depressed
: 0- 1.5 volts with brake pedal released
THW-E2 : 0.2- 1.0 volts with coolant temp. 80◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo