1999 TOYOTA CAMRY Service Repair Manual

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Page 4153 of 4592

TOYOTA CAMRY 1999 Service Repair Manual RADIATOR FAN AND CONDENSER FAN
: GROUND POINTS
CodeSee PageGround Points Location
EB34Left Radiator Side Support
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness wit

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TOYOTA CAMRY 1999 Service Repair Manual MEMO

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TOYOTA CAMRY 1999 Service Repair Manual AIR CONDITIONING
1 1
11 1
12
3584
IF EB215
4
23
1 HI M2 M11W 2
I 6L±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 P

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TOYOTA CAMRY 1999 Service Repair Manual M
CONTROL
CIRCUIT
AIR VENT MODE CONTROL SERVO MOTOR A15IJ27 4 5 6 7 8 1 2 3
DD
12345
25 1
6
7D
A/C SW A12 JUNCTION
CONNECTOR J12 L±B
B±W
L±R
W± B
L±B
W± B
L±OB±L L±RL L±W W±BR±BL±R
GND FA

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TOYOTA CAMRY 1999 Service Repair Manual AIR CONDITIONING
A/C EVAPORATOR
TEMP. SENSOR A11
EC IG2 3 IG2 1IG3 6 IG3 10IJ2 9IJ210
C 18 B 9 B 10 A 10 A21 D10 A 151
4
IJ2 2
B
A2 1
B4
A A/C MAGNETIC
CLUTCH AND
LOCK SENSOR A 2
A/C DUAL
PRESSURE SW

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TOYOTA CAMRY 1999 Service Repair Manual 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,

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, and to the MG CLT relay (Coil side) to
TERMINAL (A) 21 of the engine control module, and to TERMINAL 1 of the A/C dual pressure SW to TERMINAL 4 to
TERMINAL (D) 10 of the engine control module, and 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
engine control module. This activates the engine control module 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
1±2 : Closed with the ignition SW at ON or ST position and the blower SW on
MG CLT RELAY
5±3 : Closed with the ignition SW at ON or ST position,
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 less than approx. 2.0 kgf/cm
2 (28 psi, 196 kpa) or above approx. 32 kgf/cm2 (455 psi, 3138 kpa)
B3
BLOWER RESISTOR
2±1 : Approx. 1.64 W
2±3 : Approx. 3.24 W
2±6 : Approx. 0.47 W
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A228B430J731
A328E4A30J931
A1130E5B30J1231
A1230E6C30J2031
A1530E7D30J3031
B230F1328
B330H730
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
126Engine Room R/B No.1 (Engine Compartment Left)
SYSTEM OUTLINE
SERVICE HINTS

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TOYOTA CAMRY 1999 Service Repair Manual AIR CONDITIONING
�� : JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1R22Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1W22C

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