1999 TOYOTA CAMRY coolant

(1MZ±FE)
Previous automatic transaxle have selected each gear shift using the mechanically controlled throttle hydraulic pressure,
governor hydraulic pressure and lock±up hydraulic pressure. The electronically controlled transmission, however, electrically
controls the line pressure and lock±up pressure etc., through the solenoid valve. Engine control module 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 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 NC2+ of the engine control module from the vehicle speed sensor devoted to the O/D direct
clutch. 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 3 of the electronically controlled transmission solenoid to
GROUND, and continuity to the No.1 solenoid causes the shift.
For the 2nd speed, current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the electronically
controlled transmission solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 6 of the
electronically controlled transmission solenoid to GROUND, and continuity to solenoids No.1 and No.2 causes the shift.
For the 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 judges from each signal that lock±up operation conditions have been met, current flows
from TERMINAL SL of the engine control module to TERMINAL 2 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
*Overdrive 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 and engine control module operation causes gear shift when the conditions for overdrive are met.
*Overdrive off
When the O/D main SW is turned to off (O/D off indicator light turns on), 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 and engine control module operation prevents shift into overdrive.
E7 (A), E8 (B), E10 (D), E11 (E) ENGINE CONTROL MODULE (TURN ON THE IGNITION SW)
S1, S2±E1 :9.0±14.0 volts with the solenoid on
0±1.5 volts with the solenoid off
L±E1 :7.5±14.0 volts with the shift lever at L position
2±E1 :7.5±14.0 volts with the shift lever at 2 position
R±E1 :7.5±14.0 volts with the shift lever at R position
STP±E1 :7.5±14.0 volts with the brake pedal depressed
THW±E2 :0.2±1.0 volts with the engine coolant temp. 80°C (176°F)
VAT1±E2 :0.3±0.8 volts with the throttle valve fully closed
3.2±4.9 volts with the throttle valve fully opened
VC±E2 :4.5±5.5 volts
OD2±E1 :9.0±14.0 volts with the O/D main SW turned off
0±3.0 volts with the O/D main SW turned on
+B±E1 :9.0±14.0 volts
OD1±E1 :9.0±14.0 volts
E3 ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID
2, 3, 6±GROUND : Each 11±15 W
O2 O/D MAIN SW
2±4 : Closed with the O/D main SW off, open with the O/D main SW on
SYSTEM OUTLINE
SERVICE HINTS

ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
15A
EFIFROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2J 815A
STOP
1C 7
23 15
2F 42J2
1R 4
1R 51 2
1 2
2 1
A 4 A 1B 1B11 B4 B 9
C 21 C8C20 C24 A B
B BI 2
EBEC A
A A3
AA
G±WB±YB±Y W±B W± B
G± W G± W W
BR
BR G±BLGY
BR L±B L±B
V
P
BR BREFI
RELAY
BATTVC
STOP LIGHT SW
THROTTLE POSITION
SENSOR
ENGINE COOLANT TEMP. SENSORS 6
T 2
E 5 B
W
S2 S1 II2 7 A 3A18
CRUISE CONTROL ECU C156 13 14
L±BL±R
Y± B
ECT IDL ODA ENGINE CONTROL MODULEB ACD A 12
B±Y
+B
JUNCTION
CONNECTOR J23STP
VTA
THW IDLO
OD 1
E1
JUNCTION
CONNE CTOR J25 L±B5A
IGN
1W 7
B±R
2K 7
B±W B±W
IGSW
S1 SLE2
S2B 4 B 9 B 10 B 1 A 9 A 1 A 2 D 7 A 12(
*1)
(
*2) A A
B C
SL
NO. 2
NO. 1
LOCK±UP
B 1B3A1
E 3
ELECTRONICALLY CONTROLLED
TRANSMISSION SOLENOIDB A, E 4C 1 C 7 C 6 A 20 A 3E 7 , E 8 , E 9 , E10
B± R
(
*2)
(
*1)
J27
JUNCTION
CONNECTORB A, J28J27
J UNCTION
CONNECTORB A, J28
II4 6
(
*1) (
*1)
A 22A 225A
STARTER
1J 3
B±W B±W
JUNCTION
CONNECTOR J29
C 14 C 15
C 15
BR
(
CALIFORNIA)
(
*1)
(
*2)
BR B B
E04
MRELNSW 2C 5
W±B

(5S±FE)
Previous automatic transaxle 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 line pressure and lock±up pressure etc., through the solenoid valve. Engine control module controls of the
solenoid valve based on the input signals from each sensor which 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 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 SPD 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 (B) 3 of the 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 (B) 3 of the solenoid to
GROUND, and from TERMINAL S2 of the engine control module to TERMINAL (B) 1 of the solenoid to 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 judges from each signal that lock±up operation conditions have been met, current flows
from TERMINAL SL of the engine control module to TERMINAL (A) 1 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 (O/D off indicator light turns off), a signal is input into TERMINAL OD2 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 to off, the current 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 into TERMINAL OD2 of the engine
control module and engine control module operation prevents shift into overdrive.
E7 (A), E8 (B), E9 (C) ENGINE CONTROL MODULE (TURN ON THE IGNITION SW)
S1, S2±E1 :9.0±14.0 volts with the solenoid on
0±1.5 volts with the solenoid off
L±E1 :7.5±14.0 volts with the shift lever at L position
2±E1 :7.5±14.0 volts with the shift lever at 2 position
R±E1 :7.5±14.0 volts with the shift lever at R position
STP±E1 :9.0±14.0 volts with the brake pedal depressed
THW±E2 :0.2±1.0 volts with the engine coolant temp. 60°C (140°F) ± 120°C (248°F)
VTA±E2 :0.3±0.8 volts with the throttle valve fully closed
3.2±4.9 volts with the throttle valve fully opened
VC±E2 :4.5±5.5 volts
OD2±E1 :9.0±14.0 volts with the O/D main SW turned on
0±3.0 volts with the O/D main SW turned off
+B±E1 :9.0±14.0 volts
E3 (A), E4 (B) ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID
(A) 1, (B) 1, (B) 3±GROUND : Each 11±15 W
O2 O/D MAIN SW
2±4 : Closed with the O/D main SW off, open with the O/D main SW on
SYSTEM OUTLINE
SERVICE HINTS

AIR CONDITIONING (AUTOMATIC A/C)
5. AIR CONDITIONING OPERATION
The A/C control assembly receives various signals, I.E., the engine RPM from the engine control module, out side air
temperature signal from the A/C ambient temp. sensor, coolant temperature from the engine control module and the lock
signal from the A/C compressor, etc.
When the engine is started and the A/C SW (A/C control assembly) is on, a signal is input to the A/C control assembly.
As a result, the ground circuit in A/C control assembly is closed and current flows from HEATER fuse to TERMINAL 1 of
the MG CLT relay to TERMINAL 2 to TERMINAL 3 of the diode (A/C) to TERMINAL 2 to TERMINAL MGCR of the A/C
control assembly to TERMINAL GND to GROUND, turning the MG CLT relay on, so that the magnetic clutch is on and the
A/C compressor operates.
At the same time, the engine control module. Detects the magnetic clutch is on and the A/C compressor operates.
If the A/C control assembly detects the following conditions, it stops the air conditioning:
*Evaporator outlet air is too low.
*There is a marked difference between the compressor speed and the engine speed.
*The refrigerant pressure is abnormally high or abnormally low.
*The engine speed is too low.
*Rapid acceleration occurs.
A3 A/C DUAL PRESSURE SW
4±1 : Open above approx. 2.0 kgf/cm2 (29 psi, 196 kpa) or 32 kgf/cm2 (464 psi, 3138 kpa)
A2
A/C MAGNETIC CLUTCH AND LOCK SENSOR
4±GROUND : Approx. 3.7 W
A34 (A), A35 (B) A/C CONTROL ASSEMBLY
B±GROUND : Always approx. 12 volts
IG+ ±GROUND : Approx. 12 volts with the ignition SW at ON position
HR ±GROUND : Approx. 12 volts with the ignition SW at ON position and do not turn the blower motor
Below 1 volts with the ignition SW at ON position and turn the blower motor
PSW±GROUND : Below 1 volts with the ignition SW at ON position
AC1±GROUND : Below 1 volts at start the engine, operate the compressor
+ OR MORE volts at start the engine, do not operate the compressor
BLW±GROUND : Below 1.5 volts with the ignition SW on and turn the blower motor
S5±SG :4±6 volts with the ignition SW at ON position
SG±GROUND : Always continuity
AMH±AMC :1.3±1.9 volts with the ignition SW off
AIF±GROUND : Approx. 12 volts with the FRESH SW on
AIR±GROUND : Approx. 12 volts with the RECIRC SW on
FACE±GROUND: Approx. 12 volts with the FACE SW on
DEF±GROUND : Approx. 12 volts with the DEF SW on
GND±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A226 (1MZ±FE)A3630F826 (1MZ±FE)
A326 (1MZ±FE)A3730J131
A1330A3830J1131
A2030A3930J27A31
A3026 (1MZ±FE)B330J28B31
A3330B830J2931
A34A30D330J3231
A35B30E830
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
124Engine Room R/B No.1 (Engine Compartment Left)
SERVICE HINTS

J OVERALL ELECTRICAL WIRING DIAGRAM
9
1011 12
2 CAMRY (
Cont ' d)
10 D
P22 D
L±Y19 D
R± B
23 D
L
2DY
17 A
P
22 E
W± G
13 D
G±Y
14 D
G±B
18 D
BR
19 A
G±O
18 A
B±Y
15 A
G±W
2 EC1 4 EC1 1 EC1 3 EC1
111 2 1
2 1
1 2
28 E 27 E 16 D 24 D 10 E 9 D
WW WWB±RBRL B±W
L B±L
BR BR BR
YY
BR BR
513 3321312
Y Y
BRBR BR
BR
GR(
*4)
B±O(
*5)
ENGINE CONTROL MODULE
BRFr om Stop Li ght SW
< 11±4>
Fr om º MI RROR±HEATERº
Fuse< 26±2>
Fr om º TAI Lº Fus e
< 11±2>
E 5
ENGINE COOLANT
TEMP. SENSOR
E 1
EGR GAS TEMP.
SENSOR E 2
EGR VALVE POSITI ON
SENSOR
V 1
VAPOR PRESSURE
SENSOR
T 2
THROTTLE POSITION
SENSORM 2
MASS AIR FLOW
METER
(
Shielded)(
Shielded) (
Shielded)
(
Shielded)(
Shielded) (
Shielded)
From Park/Neutral
St ar t SW(
A/T)
or
Cl u t ch St ar t S W(
M/T)
< 1±2> C 1
CA MS HA FT P OS I T I ON
SENSOR
C 2
CRANKSHAFT POSITION
SENSOR
B±WPS STA G22+NE± NE + KNKR KNKLPT NK VCC
VG THA E2G VTA1 VC PTNK EGLS THG THW E2 ELS ELS2 STPE2
E2
VC VT A
P 2
POWE R S T EE RI NG
OI L PRESSURE SW
K 1
KNOCK SENSOR 1
K 2
KNOCK SENSOR 2
2 1
1 229 E 27 B
1II2
G±W G±W
FA FA
DBB±O B±OB±O
Fr om FAN NO. 1 Rel ay
< 26±3>To A/C Amplifier
< 27±3>
To A/ C Con tro l
Assembly< 29±8> To Tac home te r
[Comb. Meter]
< 25±5>
CF TACH
JUNCTION CONNECTOR
Engine Control and Engine Immobiliser System(
1M Z±FE)
EC Surge
t ank RH
BRE 24
BRD 17
BRE 30
BRE 31
BRE 21
A
A
A
AA
A
A
A
BR A
A
J22
JUNCTION
CONNECTORE01 E02 E03 E1 ADJ2
B
C
D
E
F
G10 C
TXCT 5C
RXCK 4C
CODE 16 C
IMLD 11 C
KSW
IE Co wl si d e
panel LH
BRE05
BRE04 4IG3 8IG315
234
G±WR±LL±Y
B±Y
BR
BR
BR
BR
BRBR
BRBRT 7
TRANSPONDER
KEY AMPLI FIER
R±Y
L±B R± Y
W± B
BR
BR
BR
B±Y BR
24
B
B
BJ26
JUNCTI ON
CONNE CTOR
B 6ID1
P
A
BR
B J27 J28A,
, E 8 E 7A B, E 9C, E10D, E11E
To Theft
Det er rent ECU
< 15±3>
To Unlock
Warning SW
< 21±3>(
*1)
(
*1)
(
*1) (
*1)
(
*1) (
*1)
* 1 : California
AB±Y
W± B
* 2 : Except California
(
*3) (
*3) (
*3)
(
*3)(
*3)
(
*3)
8D 1D
(
*5 M/T)
* 3 : w/ Engine Immobiliser System
7A
L±B
(
*2) 20 B
B±W
From º STARTERº Fuse
<1±2>NSW3II1
Y Y
2ID1 II14
BRY
BR
5ID1* 4 : TMC Made
* 5 : TMMK Made

J
5
678
3 CAMRY (
Cont ' d)A
B
C
R Q O N ML KJI12 C
#10 #20
THW
B 411 C
R
G±B
#30
THA
B 325 CY
Y±B
#40
VC
B 124 CW
Y
+B
VT A
B 1112 AB± Y
LG
BATT
PIM
B 21AB± Y
B±Y
ISCO
PTNK
B 710 CW
P
ISCC
THR
B 109CB±O
L±R
EGR
W
A 523 CP± B
G±R
FC
A 14G±R
PSSW
B 12B±L
ELS
A 2B±R
Y
LG
B±Y
P
L±R
G±R
G±R
B±Y
B1 2
3
I 1
IDLE AIR CONTROL VALVE
1 2
EVP 22 C
V±W2 1
TPC 8B
V V 4
VSV(
EGR) V 5
VSV(
EVAP)
V 7
VSV(
Vapor Pressure Sens or)B
BBBBB
B± Y B± Y B± Y
V
1
From Diode(
Idle±Up)
< 26±1>
B±Y B±Y B±Y
B±Y
B±Y
P 2
POWER STEERING
OIL PRESSURE SW
(
*4) J19
JUNCTION CONNECTOR
E ngine Control and Engine Immobiliser System (
5S±FE)
(
Cont. next page)
ENGI NE CONTROL MODULE1 2
I11
INJECTOR NO. 4
1 2
I10
INJECTOR NO. 3
1 2
I 9
INJECTOR NO. 2
1 2
I 8
INJECTOR NO. 1
B B
BBB J21
JUNCTION CONNECTOR
B±R
B±R
B±R
B±R L
B±R
D
12 II3
B± R
E
F
IGSW 1A
B±R
MREL 7DB±W
6II4
BRE 5
ENGINE COOLANT
TEMP. SENSOR
I14
INTAKE AIR TEMP.
SENSOR
BR BR
BR
1
21
2E2 9BY± B G± B
HA
B
C B
5II4 1ID1 12
G
PID110 B±R(
*1)
B±W(
*1)
B±Y B±Y
9B12C 11C 10C 9C 12A 2A 7C 6C 15B 3C
4B 3B 1B 10B 2B 8B 11B 4A 14A 4C 13A 3D 8D 9D
4 II4 1 II4 2 II4
IE Co wl s i de
panel LH1II3
W± B
14 CHT 2 OX2
B 13 6ASIL
SIL
JUNCTION CONNECTOR
A C A ASG
B BBR
B A CG
W± B
71J
BR 81J7
IG5 D 5
DATA LI NK
CONNECTOR 3
42II3
(
Shielded)
3
12 II2 241BBR P± B P±B
BB±Y
A
J11
JUNCTION
CONNECTORW± B BR
HT
E1 OX
+B
D
E
T 7
TRANSPONDER KEY AMPLIFIER
Instrument
panel
brac e LH* 1 : w/ Engine Immobiliser System
* 2 : w/o Engine Immobiliser System
W±B
(
*1)
R± L G±WL±Y
R±L G±WL±Y
B±YB
(
*1)(
*1) (
*1) (
*1) (
*1)(
*1)
(
*1)
324
1A C BAT
16
5
(
Shielded) (
Shielded)
J 3
JUNCTION
CONNECTOR
WW B±R
B±W
V
V
16 B BR(
*3)
(
*2) (
*1)
B± Y(
*1)(
*2)(
*1)
BR
BR CC
BR
21 C B 5 16 A(
*2) (
*1)
(
*1)(
*1) (
*1)B H 8
HEATED OXYGEN SENSOR
(
Bank 1 Sens or 2)
RX CK CODE TX CT
B J 7 J 8A,
, E 8 E 7 A B , E 9 C , E10 D
C
W
From Airbag Sensor
Assembly< 28±4>
* 3 : California
* 4 : Ex cept Calif ornia

L
CodePart Name Part NumberCodePart Name Part Number
D18Door Lock Control SW RH (TMC Made)90980±11326D18Door Lock Control SW RH (TMMK Made)90980±10797
D19Door Lock Motor and Door Unlock
Detection SW Front LH
D20Door Lock Motor and Door Unlock
Detection SW Front RH
90980±11150
D21Door Lock Motor and Door Unlock
Detection SW Rear LH90980±11 150
D22Door Lock Motor and Door Unlock
Detection SW Rear RH
E 1EGR Gas Temp. Sensor90980±10899
E 2EGR Valve Position Sensor90980±11143
E3
Electronically Controlled Transmission
Solenoid (1MZ±FE)90980±10854
E 3Electronically Controlled Transmission
Solenoid (5S±FE)90980±11156
E 4Electronically Controlled Transmission
Solenoid90980±11143
E 5Engine Coolant Temp. Sensor90980±10737
E 6Engine Hood Courtesy SW90980±11189
E7Engine Control Module (1MZ±FE)90980±11638E 7Engine Control Module (5S±FE)90980±11392
E8Engine Control Module (1MZ±FE)90980±11637E 8Engine Control Module (5S±FE)90980±11391
E9Engine Control Module (1MZ±FE)90980±11586E 9Engine Control Module (5S±FE)90980±11390
E10Engine Control Module (1MZ±FE)90980±11476E10Engine Control Module (5S±FE)90980±11408
E11Engine Control Module90980±11421
F 1Front Turn Signal Light and Parking Light
LH
90980±11020
F 2Front Turn Signal Light and Parking Light
RH90980±11020
F 3Front Wiper Motor90980±11599
F 4Fusible Link Block
F 5Fusible Link Block
F 6Fusible Link Block±
F 7Fusible Link Block
F 8Fusible Link Block
F 9Fusible Link Block90980±11579
F10Front Door Speaker LH90980±10825F11Front Door Speaker RH90980±10825
F12Front Tweeter (Speaker) LH90980±10916F13Front Tweeter (Speaker) RH90980±10916
F14Fuel Pump and Sender90980±11077
G 1Generator90980±09213
G 2Generator90980±11349
G 3Glove Box Light and SW90980±11098
H 1Headlight LH90980±11314H 2Headlight RH90980±11314
H 3Heated Oxygen Sensor (Bank 1 Sensor 1)90980±11028H 4Heated Oxygen Sensor (Bank 2 Sensor 1)90980±11028
H 5Horn (High)90980±10619H 6Horn (Low)90980±10619
H 7Hazard SW90980±10801
H 8Heated Oxygen Sensor (Bank 1 Sensor 2)90980±11028
H 9Heater Control SW90980±10799
H10High Mounted Stop Light90980±11148
I 1Idle Air Control Valve90980±11145
I 2Igniter90980±11653
I 3Ignition Coil and Igniter No.190980±11150I 4Ignition Coil and Igniter No.290980±11 150
I 5Ignition Coil No.1
I 6Ignition Coil No.290980±11246
I 7Ignition Coil No.3
I 8Injector No.1
I 9Injector No.2
I10Injector No.390980±11153I11Injector No.490980±11 153
I12Injector No.5
I13Injector No.6
I14Intake Air Temp. Sensor90980±11163
I15Ignition Key Cylinder Light90980±10906
I16Ignition SW90980±11615
I17Integration Relay90980±11107
I18Integration Relay (w/ Theft Deterrent)90980±11058I18Integration Relay (w/o Theft Deterrent)90980±11542
I19Interior Light90980±10121
J 1Junction Connector90980±11542
J 2Junction Connector90980±10803
J 3Junction Connector90980±11542
J 4Junction Connector90980±10803
J 5Junction Connector90980±11542
J 6Junction Connector90980±11502
J 7Junction Connector
J 8Junction Connector90980±11661J 9Junction Connector90980±11661
J10Junction Connector
J11Junction Connector90980±10976
J12Junction Connector90980±10803
J13Junction Connector90980±11661J14Junction Connector90980±11661