1994 TOYOTA CAMRY service

181
P 4 POWER SEAT CONTROL SW
10±GROUND : ALWAYS APPROX. 12 VOLTS
9±GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
J 536 (W/G)P 533P 733
P 433P 633P 833
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IO142FLOOR NO. 1 WIRE AND SEAT WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
46 (S/D)
BL48 (C/P)UNDER THE LEFT QUARTER PILLARBL
50 (W/G)
UNDER THE LEFT QUARTER PILLAR
1
21
2
1
2P4 P5 P6
P7 P8GRAY ORANGE ORANGE
GREEN
12WHITECC CC
CC C C CCJ5
(
HINT : SEE PAGE 7)2X
54
11 89 10
7 X
126
SERVICE HINTS

BBB
BB B B BBB
BBB J2 J3
B
(
HINT : SEE PAGE 7)(
HINT : SEE PAGE 7)
12 N3B
13X
45612 S5 S10BLUE12K3
1 2 N2A
183
WHEN THE IGNITION SW IS TURNED TO ACC POSITION THE CURRENT FROM THE CIG/RADIO FUSE FLOWS TO TERMINAL 1 OF THE
SHIFT LOCK ECU. WHEN THE IGNITION SW IS TURNED TO ON POSITION THE CURRENT FROM THE ECU±IG FUSE FLOWS TO
TERMINAL 3 OF THE ECU.
1. SHIFT LOCK MECHANISM
WITH THE IGNITION SW ON, WHEN A SIGNAL THAT THE BRAKE PEDAL IS DEPRESSED (STOP LIGHT SW ON) AND A SIGNAL THAT
THE SHIFT LEVER IS PUT IN ªPº POSITION (CONTINUITY BETWEEN P1 AND P OF THE SHIFT LOCK CONTROL SW) IS INPUT TO THE
ECU, THE ECU OPERATES AND CURRENT FLOWS FROM TERMINAL 3 OF THE ECU " TERMINAL SL+ OF THE SHIFT LOCK
SOLENOID " SOLENOID " TERMINAL SL± " TERMINAL 5 OF THE ECU " GROUND. THIS CAUSES THE SHIFT LOCK SOLENOID TO
TURN ON (PLATE STOPPER DISENGAGES) AND THE SHIFT LEVER CAN SHIFT INTO OTHER POSITION THAN THE ªPº POSITION.
2. KEY INTERLOCK MECHANISM
WITH THE IGNITION SW IN ON OR ACC POSITION, WHEN THE SHIFT LEVER IS PUT IN ªPº POSITION (NO CONTINUITY BETWEEN P2
AND P OF SHIFT LOCK CONTROL SW), THE CURRENT FLOWING FROM TERMINAL 4 OF THE ECU " KEYINTERLOCK SOLENOID IS
CUT OFF. THIS CAUSES THE KEYINTERLOCK SOLENOID TO TURN OFF (LOCK LEVER DISENGAGES FROM LOCK POSITION) AND
THE IGNITION KEY CAN BE TURNED FROM ACC TO LOCK POSITION.
S 5 SHIFT LOCK ECU
1±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
3±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
5±GROUND : ALWAYS CONTINUITY
6±GROUND : APPROX. 12 VOLTS WITH BRAKE PEDAL DEPRESSED
4±GROUND :0 VOLTS WITH IGNITION SW AT ACC POSITION AND SHIFT LEVER POSITION IN P POSITION
6±12 VOLTS WITH SHIFT LEVER POSITION IN EXCEPT P POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
J 233N 2A33S1033
J 333N 3B33
K 333S 533
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1L20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II142COWL WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE42LEFT KICK PANELIF42LEFT KICK PANEL
SYSTEM OUTLINE
SERVICE HINTS

185
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL 18 OF THE WIPER AND WASHER SW, TERMINAL 2 OF
THE WASHER MOTOR AND TERMINAL 4 OF THE WIPER MOTOR THROUGH THE WIPER FUSE.
1. LOW SPEED POSITION
WITH WIPER SW TURNED TO LOW POSITION, THE CURRENT FLOWS FROM TERMINAL 18 OF THE WIPER AND WASHER SW "
TERMINAL 7 " TERMINAL 3 OF THE WIPER MOTOR " WIPER MOTOR " TERMINAL 1 " TO GROUND AND CAUSES TO THE WIPER
MOTOR TO RUN AT LOW SPEED.
2. HIGH SPEED POSITION
WITH WIPER SW TURNED TO HIGH POSITION, THE CURRENT FLOWS FROM TERMINAL 18 OF THE WIPER AND WASHER SW "
TERMINAL 13 " TERMINAL 2 OF THE WIPER MOTOR " WIPER MOTOR " TERMINAL 1 " TO GROUND AND CAUSES TO THE WIPER
MOTOR TO RUN AT HIGH SPEED.
3. INT POSITION
WITH WIPER SW TURNED TO INT POSITION, THE RELAY OPERATES AND THE CURRENT WHICH IS CONNECTED BY RELAY
FUNCTION FLOWS FROM TERMINAL 18 OF THE WIPER AND WASHER SW " TERMINAL 16 " TO GROUND. THIS FLOW OF CURRENT
OPERATES THE INTERMITTENT CIRCUIT AND THE CURRENT FLOWS FROM TERMINAL 18 OF THE WIPER AND WASHER SW "
TERMINAL 7 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND THE WIPER FUNCTIONS.
THE INTERMITTENT OPERATION IS CONTROLLED BY A CONDENSER'S CHARGED AND DISCHARGED FUNCTION INSTALLED IN
RELAY AND THE INTERMITTENT TIME IS CONTROLLED BY A TIME CONTROL SW TO CHANGE THE CHARGING TIME OF THE
CONDENSER.
4. WASHER CONTINUOUS OPERATION
WITH WASHER SW TURNED TO ON, THE CURRENT FLOWS FROM TERMINAL 2 OF THE WASHER MOTOR " TERMINAL 1 "
TERMINAL 8 OF THE WIPER AND WASHER SW " TERMINAL 16 " TO GROUND AND CAUSES TO THE WASHER MOTOR TO RUN AND
WINDOW WASHER TO JET. THIS CAUSES THE CURRENT TO FLOW TO WASHER CONTINUOUS OPERATION CIRCUIT IN TERMINAL 18
OF THE WIPER AND WASHER SW " TERMINAL 7 " TERMINAL 3 OF THE WIPER MOTOR " TERMINAL 1 " TO GROUND AND THE
WIPER FUNCTION.
C13 FRONT WIPER AND WASHER SW (W/ WIPER RELAY) [COMB. SW]
16±GROUND : ALWAYS CONTINUITY
18±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
7±GROUND : APPROX. 12 VOLTS WITH WIPER AND WASHER SW AT LOW OR MIST POSITION
APPROX. 12 VOLTS 2 TO 12 SECONDS INTERMITTENTLY WITH WIPER SW AT INT POSITION
4±GROUND : APPROX. 12 VOLTS WITH IGNITION SW ON UNLESS WIPER MOTOR AT STOP POSITION
13±GROUND : APPROX. 12 VOLTS WITH WIPER AND WASHER SW AT HIGH POSITION
F 9 FRONT WIPER MOTOR
5±6 : CLOSED UNLESS WIPER MOTOR AT STOP POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1332F 928 (1MZ±FE), 30 (5S±FE)W 128 (1MZ±FE), 30 (5S±FE)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IR144ENGINE ROOM MAIN WIRE AND COWL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA38 (1MZ±FE)FRONT RIGHT FENDEREA40 (5S±FE)FRONT RIGHT FENDER
IE42LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E138 (1MZ±FE)ENGINE ROOM MAIN WIREI 544COWL WIREE 140 (5S±FE)ENGINE ROOM MAIN WIRE
SYSTEM OUTLINE
SERVICE HINTS

187
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS TO TERMINAL 2 OF WASHER MOTOR, TERMINAL 4 OF REAR WIPER
RELAY AND TERMINAL 1 OF REAR WIPER MOTOR THROUGH THE WIPER FUSE.
1. REAR WIPER NORMAL OPERATION
WITH THE IGNITION SW TURNED ON AND REAR WIPER AND WASHER SW TURNED ON, THE CURRENT FLOWING TO TERMINAL 4
OF REAR WIPER RELAY FLOWS TO TERMINAL 6 OF RELAY " TERMINAL 1 OF REAR WIPER AND WASHER SW " TERMINAL 16 "
TO GROUND. THUS, THE RELAY COIL IS ACTIVATED AND THE CURRENT TO TERMINAL 4 OF RELAY FLOWS TO TERMINAL 1 "
TERMINAL 4 OF REAR WIPER MOTOR " MOTOR " TERMINAL 2 " TO GROUND AND CAUSES THE MOTOR TO OPERATE THE
WIPER.
2. REAR WIPER INTERMITTENT OPERATION
WITH THE IGNITION SW TURNED ON AND REAR WIPER AND WASHER SW TURNED TO INT POSITION, THE CURRENT FLOWING TO
TERMINAL 4 OF REAR WIPER RELAY FLOWS TO TERMINAL 3 OF RELAY " TERMINAL 10 OF WIPER SW " TERMINAL 16 " TO
GROUND. AS A RESULT, THE RELAY OPERATES AND CURRENT FLOWS FROM TERMINAL 4 OF RELAY " TERMINAL 1 " TERMINAL
4 OF REAR WIPER MOTOR " MOTOR " TERMINAL 2 " TO GROUND, CAUSING THE MOTOR TO ROTATE TO OPERATE THE WIPER.
AT THIS TIME THE CONTACT IN THE WIPER MOTOR CLOSED AND THE CURRENT FLOWS FROM TERMINAL 1 OF REAR WIPER
MOTOR " TERMINAL 3 " TERMINAL 2 OF REAR WIPER RELAY " TERMINAL 1 " TERMINAL 4 OF REAR WIPER MOTOR "
TERMINAL 2 " TO GROUND.
THUS, THE INTERMITTENT±STOP CIRCUIT OPERATES, THE CONDENOR IN THE CIRCUIT CHARGES AND THE WIPER CONTINUES TO
OPERATE UNTIL REACHING THE STOP POSITION. AFTER THE WIPER STOPS, CURRENT DOES NOT FLOW TO THE
INTERMITTENT±STOP CIRCUIT FROM TERMINAL 2 OF RELAY, BUT THE CONDENSER DISCHARGES CURRENT INTO THE
INTERMITTENT CIRCUIT AND THE CIRCUIT OPERATES UNTIL THE CONDENSER DISCHARGE ENDS. AS A RESULT, THIS DISCHARGE
INTERVAL BECOMES THE INTERMITTENT TIME.
WHEN THE CURRENT IS DISCHARGED COMPLETELY, THE CURRENT FLOWING TO TERMINAL 4 OF RELAY FLOWS TO TERMINAL 3
" TERMINAL 10 OF REAR WIPER AND WASHER SW " TERMINAL 16 " TO GROUND.
THEN, THE CURRENT IN TERMINAL 4 OF RELAY FLOWS FROM TERMINAL 1 " TERMINAL 4 OF MOTOR " MOTOR " TERMINAL 2 "
TO GROUND AND ROTATES THE MOTOR. THROUGH REPEITION OF THIS PROCESS, INTERMITTENT OPERATION OF THE REAR
WIPER OCCURS.
3. WASHER OPERATION
WITH THE IGNITION SW ON AND THE REAR WIPER AND WASHER SW IS TURNED STRONGLY (WASHER SW ON), CURRENT FLOWS
FROM TERMINAL 2 OF WASHER MOTOR " TERMINAL 3 " TERMINAL 2 OF REAR WIPER AND WASHER SW " TERMINAL 16 " TO
GROUND SO THAT THE WASHER MOTOR ROTATES AND WINDOW WASHER EJECTS THE SPRAY, ONLY THE WHILE THE REAR
WASHER SW IS TURNED, WHEN THE REAR WIPER SW IS OFF, AND THE REAR WIPER AND WASHER SW IS THEN TURNED IN THE
OFF DIRECTION, WASHER LIQUID WILL ALSO SPLAY.
R19 REAR WIPER RELAY
4±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
7±GROUND : ALWAYS CONTINUITY
1±4 : POINTS CHANGES EVERY APPROX. 9±15 SECONDS INTERMITTENTLY WITH IGNITION SW ON AND WIPER SW AT
INT POSITION
W 1 WASHER MOTOR
2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
3±GROUND : CONTINUITY WITH WASHER SW TURNED ON
SYSTEM OUTLINE
SERVICE HINTS

191
DEFOGGER RELAY
5±3 : CLOSED WITH IGNITION SW ON, DEFOGGER SW ON
R 5 REAR WINDOW DEFOGGER SW
3±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
2±GROUND : ALWAYS CONTINUITY
3±6 : CONTINUITY WITH DEFOGGER SW ON
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
J 233R16A34 (S/D), 35 (C/P), 36 (W/G)R17B34 (S/D), 35 (C/P), 36 (W/G)
R 533R16C34 (S/D), 35 (C/P), 36 (W/G)R17D34 (S/D), 35 (C/P), 36 (W/G)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1D20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1H20FLOOR NO. 1 WIRE J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
Bc150 (W/G)BACK DOOR NO. 1 WIRE AND FLOOR NO. 1 WIRE
Bd350 (W/G)BACK DOOR NO. 1 WIRE AND BACK DOOR NO. 2 WIRE
Be150 (W/G)REAR WINDOW NO. 1 WIRE AND BACK DOOR NO. 2 WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE42LEFT KICK PANEL
IG42INSTRUMENT PANEL BRACE LH
BN46 (S/D)UNDER THE RIGHT QUARTER PILLARBN48 (C/P)UNDER THE RIGHT QUARTER PILLAR
BS50 (W/G)BACK DOOR RIGHT
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 744COWL WIRE
A
F F FX2
36 J2 R 5 R16 ,R17B DARK GRAYBLACK BLUE
(
HINT : SEE PAGE 7)11D R16 , R17CBLACK
SERVICE HINTS

197
7. AUTO CANCEL FUNCTION
A) IF ANY OF THE FOLLOWING OPERATING CONDITIONS OCCURS DURING CRUISE CONTROL OPERATION, THE SET SPEED IS
ERASED, CURRENT FLOW TO MAGNETIC CLUTCH IS CUT OFF AND THE CRUISE CONTROL IS RELEASED. (MAIN SW TURNS OFF).
WHEN THIS OCCURS, THE IGNITION SW MUST BE TURNED OFF ONCE BEFORE THE MAIN SW WILL TURN ON AGAIN.
*OVER CURRENT TO TRANSISTOR DRIVING MOTOR AND/OR MAGNETIC CLUTCH.
*WHEN CURRENT CONTINUED TO FLOW TO THE MOTOR INSIDE THE ACTUATOR IN THE THROTTLE VALVE ªOPENº DIRECTION.
*OPEN CIRCUIT IN MOTOR AND/OR MAGNETIC CLUTCH.
*MOMENTARY INTERRUPTION OF VEHICLE SPEED SIGNAL.
*SHORT CIRCUIT IN CRUISE CONTROL SW.
*MOTOR DOES NOT OPERATE DESPITE THE MOTOR DRIVE SIGNAL BEING OUTPUT.
B) IF ANY OF THE FOLLOWING CONDITIONS OCCURS DURING CRUISE CONTROL OPERATION, THE SET SPEED IS ERASED AND
THE CRUISE CONTROL IS RELEASED. CURRENT FLOW TO MAGNETIC CLUTCH IS CUT OFF UNTIL THE SET SW IS ªONº AGAIN.)
*WHEN THE VEHICLE SPEED HAS FALLEN BELOW THE MINIMUM SPEED LIMIT, APPROX. 40 KM/H (25 MPH)
*WHEN THE VEHICLE SPEED HAS FALLEN MORE THAN 16 KM/H (10 MPH) BELOW THE SET SPEED, E.G. ON AN UPWARD SLOPE.
*WHEN POWER TO THE CRUISE CONTROL SYSTEM IS MOMENTARILY CUT OFF.
C) IF ANY OF THE FOLLOWING CONDITIONS OCCURS DURING CRUISE CONTROL OPERATION, THE CRUISE CONTROL IS
RELEASED.
*OPEN CIRCUIT FOR TERMINAL 1 OF CRUISE CONTROL ECU.
8. AUTOMATIC TRANSMISSION CONTROL FUNCTION
*IN OVERDRIVE. IF THE VEHICLE SPEED BECOMES LOWER THAN THE OVERDRIVE CUT SPEED (SET SPEED MINUS APPROX. 4
KM/H, 2.5 MPH) DURING CRUISE CONTROL OPERATION, SUCH AS DRIVING UP A HILL, THE OVERDRIVE IS RELEASED AND THE
POWER INCREASED TO PREVENT A REDUCTION IN VEHICLE SPEED.
*AFTER RELEASING THE OVERDRIVE, IF VEHICLE SPEED BECOMES HIGHER THAN THE OVERDRIVE RETURN SPEED (SET
SPEED MINUS APPROX. 2 KM/H, 1.2 MPH) AND THE ECU JUDGES BY THE SIGNALS FROM POTENTIOMETER OF THE ACTUATOR
THAT THE UPWARD SLOPE HAS FINISHED, OVERDRIVE IS RESUMED AFTER A WHILE.
C 2 CRUISE CONTROL ACTUATOR
1±3 : APPROX. 2 K

5±4 : APPROX. 38

C13 CRUISE CNTROL SW MAIN [COMB. SW]
15±20 : CONTINUITY WITH MAIN SW ON
20±17 : APPROX. 418
WITH CANCEL SW ON
APPROX. 68
WITH RESUME/ACCEL SW ON
APPROX. 198
WITH SET/COAST SW ON
C16 CRUISE CONTROL ECU
14±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
1,15±GROUND : ALWAYS APPROX. 12 VOLTS
3±GROUND : CONTINUITY WITH PARKING BRAKE SW ON (ONE OF THE CANCEL SW) OR BRAKE LEVEL WARNING SW ON
20±GROUND :4 PULSE WITH 1 ROTATION OF ROTOR SHAFT
18±GROUND : APPROX. 418
WITH CANCEL SW ON IN CONTROL SW
APPROX. 68
WITH RES/ACC SW ON IN CONTROL SW
APPROX. 198
WITH SET/COAST SW ON IN CONTROL SW
13±GROUND : ALWAYS CONTINUITY
2±GROUND : CONTINUITY WITH SHIFT LEVER AT N POSITION (A/T) OR CLUTCH PEDAL DEPRESSED (M/T)
SERVICE HINTS

202
ELECTRONIC CONTROLLED TRANSMISSION AND A/T INDICATOR (1MZ±FE)
E 7(B), E 8 (C), E10(A)ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU)
(TURN ON THE IGNTION SW)
S1, S2± E1 : 9.0±14.0 VOLTS WITH SOLENOID ON
0±1.5 VOLTS WITH SOLENOID OFF
P± E1:7.5±14.0 VOLTS WITH IGNITION SW ON AND PATTERN SELECT SW AT POWER POSITION
L± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT L POSITION
2± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT 2 POSITION
R± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT R POSITION
STP± E1:9.0±14.0 VOLTS WITH BRAKE PEDAL DEPRESSED
THW± E2:0.2±1.0 VOLTS WITH WITH ENGINE COOLANT TEMP. 60°C (140°F) ±120°C (248°F)
IDL± E2:0±1.5 VOLTS WITH THROTTLE VALVE FULLY CLOSED
9.0±14.0 VOLTS WITH THROTTLE VALVE FULLY OPENED
VTA±E2:0.3±0.8 VOLTS WITH THROTTLE VALVE FULLY CLOSED
3.2±4.9 VOLTS WITH THROTTLE VALVE FULLY OPENED
VC± E2:4.5±5.5 VOLTS WITH IGNITION SW AT ON POSITION
OD1± E1:4.5±5.5 VOLTS WITH IGNITION SW AT ON POSITION
OD2± E1:9.0±14.0 VOLTS WITH O/D MAIN SW TURNED OFF
0±3.0 VOLTS WITH O/D MAIN SW TURNED ON
IGSW± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
+B± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
+B1± E1:9.0±14.0 VOLTS WITH IGNITION SW AT ON POSITION
E 2
ELECTRONIC CONTROLLED TRANSMISSION SOLENOID1, 2, 6±GROUND : EACH 11±15 W
O 5 O/D MAIN SW1±3 : CLOSED WITH O/D MAIN SW OFF, OPEN WITH O/D MAIN SW ON
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 832E 9C32O 533
C1132E10D32O 629
D 128J 133P 129
E 228J 233S1033
E 428J 333T 129
E 632J 733V 529
E 7A32N 2A33
E 8B32N 3B33
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A
1D20COWL WIRE AND J/B NO 1 (INSTRUMENT PANEL LEFT)1K20COWL WIRE AND J/B NO. 1 (INSTRUMENT PANEL LEFT)
1M
2B22ENGINE ROOM MAIN WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
2C22ENGINE WIRE AND J/B NO 2 (ENGINE COMPARTMENT LEFT)2D22ENGINE WIRE AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
3B
3C24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
3D
24COWL WIRE AND J/B NO. 3 (BEHIND COMBINATION METER)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II142COWL WIRE AND INSTRUMENT PANEL WIRE
II242INSTRUMENT PANEL WIRE AND COWL WIRE
IN142INSTRUMENT PANEL WIRE AND SWITCH WIRE
IP144ENGINE WIRE AND COWL WIREIP344ENGINE WIRE AND COWL WIRE
IQ144ENGINE WIRE AND INSTRUMENT PANEL WIRE
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB38 (1MZ±FE)FRONT LEFT FENDER
ED38 (1MZ±FE)INTAKE MANIFOLD LH
IF42LEFT KICK PANEL
SERVICE HINTS

206
ELECTRONIC CONTROLLED TRANSMISSION AND A/T INDICATOR (5S±FE)
PREVIOUS AUTOMATIC TRANSMISSIONS HAVE SELECTED EACH GEAR SHIFT USING MECHANICALLY CONTROLLED THROTTLE
HYDRAULIC PRESSURE, GOVERNOR HYDRAULIC PRESSURE AND LOCK±UP HYDRAULIC PRESSURE. THE ELECTRONIC
CONTROLLED TRANSMISSION, HOWEVER, ELECTRICALLY CONTROLS THE LINE PRESSURE AND LOCK±UP PRESSURE ETC.,
THROUGH THE SOLENOID VALVE. ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU)
CONTROL OF THE SOLENOID VALVE BASED ON THE INPUT SIGNALS FROM EACH SENSOR MAKES SMOOTH DRIVING POSSIBLE BY
SHIFT SELECTION FOR EACH GEAR WHICH IS MOST APPROPRIATE TO THE DRIVING CONDITIONS AT THAT TIME.
1. GEAR SHIFT OPERATION
DURING DRIVING, THE ENGINE CONTROL MODULE (ECU) SELECTS THE SHIFT FOR EACH GEAR WHICH IS MOST APPROPRIATE TO
THE DRIVING CONDITIONS, BASED ON INPUT SIGNALS FROM THE ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR)
TO TERMINAL THW OF THE ENGINE CONTROL MODULE (ECU), AND ALSO THE INPUT SIGNALS TO TERMINAL SP1 OF THE ENGINE
CONTROL MODULE (ECU) FROM THE VEHICLE SPEED SENSOR (SPEED SENSOR) DEVOTED TO THE ELECTRONIC CONTROLLED
TRANSMISSION. CURRENT IS THEN OUTPUT TO THE ELECTRONIC CONTROLLED TRANSMISSION SOLENOIDS. WHEN SHIFTING TO
1ST SPEED, CURRENT FLOWS FROM TERMINAL S1 OF THE ENGINE CONTROL MODULE (ECU) " TERMINAL (A)3 OF THE
ELECTRONIC CONTROLLED TRANSMISSION SOLENOIDS " GROUND, AND CONTINUITY TO THE NO. 1 SOLENOID CAUSES THE
SHIFT.
FOR 2ND SPEED, CURRENT FLOWS FROM TERMINAL S1 OF THE ENGINE CONTROL MODULE (ECU) " TERMINAL (A)3 OF THE
ELECTRONIC CONTROLLED TRANSMISSION SOLENOIDS " GROUND, AND FROM TERMINAL S2 OF THE ENGINE CONTROL
MODULE (ECU) " TERMINAL (A)1 OF THE ELECTRONIC CONTROL TRANSMISSION SOLENOIDS " GROUND, AND CONTINUITY TO
SOLENOIDS 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 EITHER NO. 1 OR NO. 2 SOLENOID.
2. LOCK±UP OPERATION
WHEN THE ENGINE CONTROL MODULE (ECU) JUDGES FROM EACH SIGNAL THAT LOCK±UP OPERATION CONDITIONS HAVE BEEN
MET, CURRENT FLOWS FROM TERMINAL SL OF THE ENGINE CONTROL MODULE (ECU) " TERMINAL (B)1 OF THE ELECTRONIC
CONTROLLED TRANSMISSION SOLENOID " 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 B/K OF THE ENGINE CONTROL MODULE (ECU), THE ENGINE CONTROL MODULE (ECU) 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 (O/D OFF INDICATOR LIGHT TURNS OFF), A SIGNAL IS INPUT TO TERMINAL OD2 OF THE
ENGINE CONTROL MODULE (ECU) AND ENGINE CONTROL MODULE (ECU) OPERATION CAUSES GEAR SHIFT WHEN THE
CONDITIONS FOR OVERDRIVE ARE MET.
*O/D MAIN SW OFF
WHEN THE O/D MAIN SW IS TURNED TO OFF, THE CURRENT FLOWING THROUGH THE O/D OFF INDICATOR LIGHT FLOWS
THROUGH THE O/D MAIN SW TO GROUND. CAUSING THE INDICATOR LIGHT TO LIGHT UP. AT THE SAME TIME, A SIGNAL IS INPUT
TO TERMINAL OD2 OF THE ENGINE CONTROL MODULE (ECU) AND ENGINE CONTROL MODULE (ECU) OPERATION PREVENTS
SHIFT INTO OVERDRIVE.
5. ELECTRONIC CONTROLLED TRANSMISSION PATTERN SELECT SW CIRCUIT
IF THE ELECTRONIC CONTROLLED TRANSMISSION PATTERN SELECT SW IS CHANGED FROM NORMAL TO POWER, THE CURRENT
FLOWING THROUGH THE POWER INDICATOR FLOWS TO GROUND, CURRENT FLOWS TO TERMINAL P OF THE ENGINE CONTROL
MODULE (ECU), THE ENGINE CONTROL MODULE (ECU) OPERATES, AND SHIFT UP AND SHIFT DOWN OCCUR AT HIGHER VEHICLE
SPEEDS THAN WHEN THE SW IS IN NORMAL POSITION.
E 7(C), E 8 (B), E10(A)ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU)
(TURN ON THE IGNTION SW)
S1, S2 ±E1 :9.0±14.0 VOLTS WITH SOLENOID ON
0±1.5 VOLTS WITH SOLENOID OFF
P ±E1:7.5±14.0 VOLTS WITH IGNITION SW ON AND PATTERN SELECT SW AT POWER POSITION
L± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT L POSITION
2± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT 2 POSITION
R± E1:7.5±14.0 VOLTS WITH SHIFT LEVER AT R POSITION
B/K± E1:9.0±14.0 VOLTS WITH BRAKE PEDAL DEPRESSED
THW± E2:0.2±1.0 VOLTS WITH WITH ENGINE COOLANT TEMP. 60°C (140°F) ±120°C (248°F)
IDL± E2:0±1.5 VOLTS WITH THROTTLE VALVE FULLY CLOSED
9.0±14.0 VOLTS WITH THROTTLE VALVE FULLY OPENED
SYSTEM OUTLINE
SERVICE HINTS