1999 TOYOTA CAMRY air conditioning

AIR CONDITIONING (AUTOMATIC A/C)
X

XX



13 14 X X



X X

X
25 X X

X
X

X
27
1AA



AA





AA
AAAA











FF



















FFFF


A A
AA












DD



GRAY
E8 F8 J1 J11
J27 (A) J28 (B) J29 J32
(Hint : See Page 7)(Hint : See Page 7)
(Hint : See Page 7)
(Hint : See Page 7)
(Hint : See Page 7) (Hint : See Page 7)

AIR CONDITIONING (MANUAL A/C)
1 1
11 1
1261
3584
IG EB215
4
23
1 HI M2 M11W 2
I 3L±B
B±W
L±B
B±WL±W W± B
W±BL±R W± B
L±W
10A
HEATER
1
HTR
RELAY
BLOWER RESISTOR
BLOWER
MOTOR
B±W
L±B
L±O
BLOWER SWOFF FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
LO B 3B 4
B 512
1 1 EB131R 3
2C 92K 5
23 1511
11A
AAA
3
JUNCTION
CONNECTOR J11JUNCTION
CONNECTOR J32 FUSIBLE
LINK BLOCK F 8
L±R
L±B L±B
L±B L±B
B±W(
*2) L±W(
*1) L±Y(
*2) B±W
L±B
L±B L±B
L±RTO FAN NO. 3 RELA Y MG CLT
RELAY
10A A/C
EB 2 1EB12
L±R
W±B
W±B
L±B
W± B
W±BL±B W±B W±BL±R L±W(
*1) L±Y(
*2) B±WL±B
W±B
50A HTR
(
*1)
(
*1)
A
A
A M

AIR CONDITIONING (MANUAL A/C)
A/C EVAPORATOR
TEMP. SENSOR A13
EC II2 3 II2 1II36 II3 10IK2 9IK210
C 18(
*4)
B 9 B 10 A 10 A 21 A 13 A 15B D
A F 1
4
IK2 2
BF
A 13 9 7 1 4 8 5102 1
BB 12 214
F 4
A F A/C AMPLIFIER A1 2A/C MAGNETIC
CLUTCH AND
LOCK SENSOR A 2
A/C DUAL
PRESSURE SW A 3
JUNCTION CONNECTOR J1 2
JUNCTION CONNE CTOR J23JUNCTION CONNECTOR J2 9 JUNCTION CONNECTOR
ENGINE CONTROL MODULE L±B
B±W
L±Y(
*1)
L±Y(
*2)
G G
(
*1)
G
(
*2)B±W
MGC +BLOCK
GND L±A/C S±A/C IGN AC1 ACT TH SG
W± B
R±W
(
*1)
R±B
R±B
R±W
(
*2)1
2
W±B
R±W
(
*1)
R±B
B±O
(
*1)
B±Y
(
*1)
L±W
(
*1)
W±R
(
*1) L±W
(
*2)
BR
(
*2)
W± R
(
*1) LG±B
(
*1)
L±R
BR
W±L
(
*2) (
*2) (
*2)
LOCK P RS MGC A/C S W TACH A/C ACT THR E2 LOCK INBR
(
*2)BR
(
*2)BR
(
*2)W± L
(
*2)
W±R(
*1)
BR(
*2)W±L
(
*1)
W± L
BR(
*2) W±R(
*1) B±O
(
*1) R±B
(
*2) L±Y
(
*2) G
(
*2)
(
*1) W± B
(
*1) W±B
(
*1) R±B
B
B
JUNCTION
CONNECTOR J 8B J27 A , J28
A 20 A19 A21 A10 B11 B9C19(
*3) B 27 B25 B13(
*1)
B E 7 A , E 8 C, E 9* 1 : 1MZ±FE
* 2 : 5S±FE* 3 : 5S±FE W/ ENGINE IMMOBILISER
* 4 : 5S±FE W/O ENGINE IMMOBILISER

Current always flows from the HTR fuse to TERMINAL 1 of the HTR relay. When the ignition SW is turned on, the current
from the HEATER fuse flows to TERMINAL 6 of the air vent mode control servo motor, to the MG CLT relay (Coil side) to
TERMINAL MGC of the A/C amplifier (1MZ±FE) or TERMINAL MGC of the engine control module (5S±FE), to TERMINAL 1
of the A/C dual pressure SW to TERMINAL 4 to TERMINAL +B of the A/C amplifier (1MZ±FE) or TERMINAL PRS of the
engine control module (5S±FE), current also to the HTR relay (Coil side) to TERMINAL 3 of the blower SW.
1. AIR VENT MODE CONTROL SERVO MOTOR OPERATION
When the damper is in FACE position and B/L mode on the heater control SW is selected, current flows from TERMINAL 7
of the heater control SW to TERMINAL 2 of the air vent mode control serve motor so that a signal that the ground circuit is
activated is input into TERMINAL B of the control circuit inside the air vent mode control servo motor. Simultaneously, a
signal that the ground circuit is not activated is input into TERMINAL A of the control circuit inside the servo motor. These two
signals activate the control circuit so that current flows from the HEATER fuse to the servo motor, causing the servo motor to
operate and the damper to move to B/L position. When the damper reaches B/L position. A ground cut signal is input into
TERMINAL B of the control circuit, the control circuit operates, the servo motor stops rotating and the damper stops at B/L.
When another mode position is selected, input of signals into TERMINAL A and TERMINAL B of the control circuit that
ground is made or not (as explained above) activates the control circuit and moves the serve motor to the desired position.
2. AIR CONDITIONING OPERATION
When the blower SW is on, current flows from the HEATER fuse to the HTR relay (Coil side) to TERMINAL 3 of the blower
SW to TERMINAL 1 to GROUND, activating the HTR relay. This causes current to flow from the HTR fuse to the HTR relay
(Point side) to A/C fuse to TERMINAL 2 of the A/C SW. If the A/C SW is turned on at this time, a signal is input into the A/C
amplifier (1MZ±FE) or engine control module (5S±FE). This activates the A/C amplifier (1MZ±FE) or engine control module
(5S±FE) and MG CLT relay so that current flows from the HEATER fuse to the MG CLT relay (Point side) to A/C magnetic
clutch. Causing The compressor to operate.
When blower SW is on and heater control SW is at DEF position, it causes A/C to run whether A/C SW is on or not.
HTR RELAY [R/B NO.1]
1±2 : Closed with the ignition SW on and the blower SW on
MG CLT RELAY [R/B NO.1]
5±3 : Closed with the ignition SW on, the blower SW on and the A/C SW on or the heater control SW at DEF position
A3 A/C DUAL PRESSURE SW
1±4 : Open with pressure 2.0 kgf/cm
2 (29 psi, 196 kpa) or above 32 kgf/cm2 (464 psi, 3138 kpa)
B4
BLOWER RESISTOR
6±1 : Approx. 0.62 W
1±3 : Approx. 1.46 W
2±6 : Approx. 0.38 W
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A226 (1MZ±FE)B430J831A228 (5S±FE)B530J1131
A326 (1MZ±FE)D326 (1MZ±FE)J1231A328 (5S±FE)E7A30J2331
A1230E8B30J27A31
A1330E9C30J28B31
A1430F826 (1MZ±FE)J2931
A2030F828 (5S±FE)J3231
B330H930
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
124Engine Room R/B No.1 (Engine Compartment Left)
SYSTEM OUTLINE
SERVICE HINTS

AIR CONDITIONING (MANUAL A/C)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1R20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1W20Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2C22Engine Room Main Wire and Engine Room J/B No.2 (Engine Compartment Left)
2K22Cowl Wire and Engine Room J/B No.2 (Engine Compartment Left)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB136 (1MZ±FE)EB138 (5S±FE)Cowl Wire and Engine Room Main Wire (Under the Engine Room J/B No 2)
EB236 (1MZ±FE)Cowl Wire and Engine Room Main Wire (Under the Engine Room J/B No.2)
EB238 (5S±FE)
II242Engine Wire and Cowl Wire (Under the Blower Motor)II342Engine Wire and Cowl Wire (Under the Blower Motor)
IK242Engine Room Main Wire and Cowl Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EB36 (1MZ±FE)Left Radiator Side SupportEB38 (5S±FE)Left Radiator Side Support
EC38 (5S±FE)Intake Manifold
IG40Instrument Panel Brace LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I342Cowl Wire
12
X4
X 4 X 2 1
78910X12 145
13
12
12

5
123456712
12
3XX61X3
45


8
23 GRAY BLACK ORANGE
A13 A14
A20 B3 B4 B5
ORANGE
1



4
A2 A3 A12
D3

SYSTEM INDEX
J OVERALL ELECTRICAL WIRING DIAGRAM
SYSTEMS LOCATION SYSTEMS LOCATION
ABS
TMC Made 19±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TMMK Made 20±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ABS and Traction Control 18±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning
Automatic A/C 29±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual A/C 27±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Antenna 24±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back±Up Light 8±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 1±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter and Clock 16±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 25±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 17±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Control 14±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission and A/T Indicator
1MZ±FE 4±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5S±FE 5±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Control and Engine Immobiliser System
1MZ±FE 2±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5S±FE 3±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight
w/ Daytime Running Light 7±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
w/o Daytime Running Light 6±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 21±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 10±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Light 9±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Reminder and Seat Belt Warning 21±3. . . . . . . . . . . . . . . . . . . . . . . . Light Auto Turn Off 9±1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon Roof 21±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Outlet 16±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Seat 22±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 1~29±1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window 13±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Fan and Condenser Fan 26±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player
Built±In Type Amplifier 24±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separate Type Amplifier 23±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger and Mirror Heater 26±2. . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 12±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock 16±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS 28±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting and Ignition 1±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 11±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 11±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft Deterrent 15±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light 8±2. . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper and Washer 12±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wireless Door Lock Control 14±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

J
1
234
27 CAMRY1F 2F 1E
100A ALT 50A HTR1B 11K2ACC
IG1 AM1 4
EBLef t r adiator
side support2 1
3 5
411
11 1
1 EB2 2 EB1
1 2
M
HTR RELAY10A A/ C
1
12 1
3 5 11
112K 52C 9
MG CLT RELAY
1W 21R3 1K 1
L±B
1 0A HEAT ER
HI M2 M1
OFF LO
3261
IG Instrument
panel brace
LHFr om FAN NO. 3
Relay< 26±3>
1
3232187654GND FACE B/L FOOT F/D DEFDE F F/D
FOOT B/L FACE
1 345
FACE B/L FOOT F/D DEF2
M
J32
JUNCTI ON CONNECTOR
A
A
EC Intake
ma ni f o ld6 II3 10 IK2 A 2
A/C MAGNETIC CLUTCH
AND LOCK SENSOR
9IK2
From Engine Control
Module< 3±10>
W± L
(
*2)
To Engine Cont rol
Module< 3±10> G
(
*2)
2IK2
To Engine Cont rol
Module< 2±7>
From Engine Control
Module< 2±11>
417 2 14
LG±B(
*1)
B±Y(
*1)
B±O(
*1) G
(
*1)
IGN AC1 ACT +B LOCK
10
2 1
J29
JUNCTION CONNECTOR
A13
A/C EVAPORATOR
TEMP. SENSOR
To Engine Cont rol
Module< 3±10> J12
JUNCTI ON
CONNE CTOR
8
BR±B
(
*2)
OFF
ON EB13IK27
To Engine Cont rol
Module< 3±10>To Engine Control
Module< 3±10> R±W
(
*2)
A AJ23
JUNCTION
CONNECTOR
B
B±G B±R B±R
B±R WW± B B±W L±R L±R L±W L±WB±WL±B W± B W± BL±B L±B
L±OW±B L±R R±B W± BL±WL L±R
B±L
L±O
L±BL±Y W± B(
*1) R±B L±W W± R(
*1) R±W BR(
*2)
BR(
*2)
W± R(
*1)
BR(
*2)
W± L1A
BATTERY 2
40A
AM1I16
IGNI TION SWB±Y
L±B L±B L±BL±B
1 2
L±R
B 3
BLOWER MOTOR
584B±W
3
A
A 1J11
JUNCTI ON CONNECTORW± B
B 4
BLOWER RESISTOR
AA A
(
*1)
6
7IG
GNDDD
D J12
JUNCTION
CONNE CT OR To FAN NO. 3
Relay< 26±4> B± W
(
*2)L±W(
*1)
L±Y(
*2)L
(
*1)D 3
DI ODE
(
A/ C)
L±R L±RL±B14
G B±W
L±Y
(
*1)
L±R
W± BR±B
(
*1)
L±Y
(
*2)
215L±R R±B
BB 12 5 9 13MGC GND S±A/C TH SG L±A/C
F
F
(
*1) (
*1) (
*1) (
*1)
W± R(
*1)
F A12
A/C AMPLI FIER
W±L
(
*1)12
W±R
(
*1)(
*2) BR
(
*2) BR
* 1 : 1MZ±FE
* 2 : 5S±FE
B 5
BLOWER SW
A2 0
AI R VENT MODE CONTROL SERVO MOTOR A14
A/C SW
L±B
L±BB±W
H 9
HEATER CONTROL SWA 3
A/C DUAL PRESSURE SW
4
FL MAIN
3. 0W
W±BCONT ROL
CIRCUITA
BB
J 8
JUNCTION
CONNECTOR
Power SourceAir Conditioning (
M anual A/C)
From Engine Control
Module< 2±7>
F 4 F 8, AE
F 9,
FUSIBLE LINK
BLOCKF

J
5
678
29 CAMRY (
Cont' d)A
F
JI H
GE D CB13 A
26A 10A 2B 3A 16B 9B
9IK2
4 17B 6A 4A 17A 18A 19A 20A 9A 8A 11A14 A 16 A 13 B 10 B 14 B 3B 4B 6B 5B 8B
1 2
1 2
2 11IK1 1IG1
2IG1 4IK3
M
M1
22 5 6
6 1
712345
2 1 435GND IGN AC1 ACT TW TR TE TAM TS TP S5 AMC AMH DEF F/D FOOT B/ L FACE TPI AI F PSW BLW LOCK MGCR HR IG+
B± W
W±B
L±B
W±B
W±B B±WL±Y L±WL±B W± R
L±B
W± B
W±R
W± B
W±B
B±O
B±Y
LG±B
V
YY
B±Y
L W W
B±Y
L
P
G± R B±Y
L
P
G± R
L±O
B±L
L±R
L
L±W
P±L
L±Y
L±B
B±W
W± L
L±B L±WL±Y W± L
B± WL±B
15 ASPD
V±W
B
4FACE B/L FOOT F/D DEF
A 2
A/C MAGNETIC
CLUTCH AND
LOCK SENSOR
A 3
A/C DUAL PRESSURE SW
A20
AIR VENT MODE
CONT ROL SE RVO MOTOR A38
AIR INLET CONTROL
SERVO MOTOR
To Speedometer
[Comb. Meter]< 25±8>
IG
GNDB A
CONT ROL
CIRCUIT
A30
A/C AMBI ENT TEMP. SENSOR
A3 6
A/ C ROOM TEMP. SENSOR A13
A/C EVAPORATOR TEMP. SENSOR
A37
A/C SOLAR SENSORA39
AIR MIX CONTROL
SERVO MOTOR
Air Conditioning (
A u to ma tic A /C)
From Engine Contr ol
Module< 2±7> < 2±8>
7A
7AI RR
3
G±Y L±W W±R
W±R
W± R
L
L L L
L
1
L±O
B±L
L±R
L
L±W
23 AY±G
From Defogger Relay
< 26±3>
Fr om Engine Control
Module< 2±11>
M RDFG
WARM
COOL To Engine Cont rol
Module< 2±7>
A34 A35,
A/ C CONTROL ASSEMBLYAB
11 IK21ASG
10 IK2 FF AA
AA
F
W±R W± R W± R
W±R W±R
W±R
W± RF
J 1
JUNCTION
CONNECTORJ29
JUNCTION
CONNECTOR
W±R
W± R
W± RW± R