TOYOTA CAMRY 1999 Service Manual Online

AC0NC±01
AC±80
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2562 Author: Date:
AIR CONDITIONING CONTROL ASSEMBLY
ON±VEHICLE INSPECTION
INSPECT A/C CONTROL DIAL AND LEVER OPERATION
Move the control dial and lever left and right and check for stiffness and binding through the full range of the
levers.

AC0ND±02
Z19017
LH Lower Instrument
Panel
No.1 Lower Finish
Panel
Cowl Side Trim
Front Door Inside
Scuff PlateCenter Cluster Finish Panel
A/C Control Assembly
Glove Compartment
Cowl Side Trim
Air Inlet Damper Control Cable
Air Inlet Control Lever
Mode Switch
A/C Switch
Defogger Switch
Heater Control
Name Sheet
Heater Control Knob Heater Control BaseBlower Speed Control
SwitchFront Door Inside Scuff Plate
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC±81
2563 Author: Date:
COMPONENTS

AC0NE±02
N20304
Air Mix Damper
Control Cable
Air Inlet Damper
Control Cable
N20289
AC±82
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2564 Author: Date:
REMOVAL
1. REMOVE COWL SIDE TRIM LH AND RH
2. REMOVE FRONT DOOR INSIDE SCUFF PLATE LH
AND RH
3. REMOVE NO. 2 LOWER COVER
4. REMOVE GLOVE COMPARTMENT
5. REMOVE NO. 1 LOWER INSTRUMENT PANEL
6. REMOVE LH LOWER INSTRUMENT PANEL
7. REMOVE CENTER CLUSTER FINISH PANEL
8. DISCONNECT A/C CONTROL CABLES
9. REMOVE A/C CONTROL ASSEMBLY
Remove the 4 screws and pull out the A/C control assembly,
then disconnect the connector.

AC0NF±02
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC±83
2565 Author: Date:
DISASSEMBLY
1. REMOVE A/C SWITCH AND DEFOGGER SWITCH
Using a screwdriver, release the claw and pull out the switch backward.
HINT:
Tape the screwdriver tip before use.
2. REMOVE HEATER CONTROL KNOBS
3. REMOVE HEATER CONTROL CABLE
4. REMOVE BLOWER SPEED CONTROL SWITCH
Remove the 2 screws and pull out the switch.
5. REMOVE MODE SWITCH
Remove the 2 screws and pull out the switch.
6. REMOVE HEATER CONTROL NAME SHEET
(a) Remove the 2 screws.
(b) Using a screwdriver, release the 4 claws and heater control name sheet.
HINT:
Tape the screwdriver tip before use.

AC0NG±02
N19466
ON OFF
2
1
N19484
ON
OFF
2
1 4
N19467
ON
OFF
N19464
M1
M2 AC±84
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2566 Author: Date:
INSPECTION
1. INSPECT A/C INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1.
(b) Push the A/C button in and then check that the indicator
lights up.
If operation is not as specified, replace the switch.
2. INSPECT DIMMING OPERATION
(a) Connect the positive (+) lead from the battery to terminal
2 and the negative (±) lead to terminal 1 while press the
switch.
(b) Connect the positive (+) lead from battery to terminal 4
and then check that the indicator dims.
If operation is not as specified, replace the switch.
3. INSPECT A/C SWITCH CONTINUITY
Condition/ CircuitTester connectionSpecified condition
OFF±No continuity
ON2 ± 5Continuity
Illumination circuit3 ± 4Continuity

Switch continuity:
If continuity is not as specified, replace the switch.

Illumination circuit:
If continuity is not as specified, replace the bulb.
4. INSPECT BLOWER SPEED CONTROL SWITCH CON-
TINUITY
Position/ CircuitTester connectionSpecified condition
OFF±No continuity
LO1 ± 3Continuity
M11 ± 3 ± 4Continuity
M21 ± 3 ± 8Continuity
HI1 ± 3 ± 5Continuity
Illumination circuit6 ± 7Continuity
If continuity is not as specified, replace the switch.

N20257
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC±85
2567 Author: Date:
5. INSPECT MODE SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
FACE1 ± 6Continuity
B/L1 ± 5Continuity
FOOT1 ± 4Continuity
FOOT/DEF.1 ± 3Continuity
DEF.1 ± 2
7 ± 8Continuity
If continuity is not as specified, replace the switch.
6. INSPECT REAR DEFOGGER SWITCH OPERATION
(See page BE±56)

AC0NH±01
AC±86
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
2568 Author: Date:
REASSEMBLY
Reassembly is in the reverse order of disassembly (See page AC±83).

AC0NI±02
N21047
Fresh
Clamp
N20239
Clamp Cool
± AIR CONDITIONINGAIR CONDITIONING CONTROL ASSEMBLY
AC±87
2569 Author: Date:
INSTALLATION
Installation is in the reverse order of removal
(See page AC±82).
1. AFTER INSTALLATION INSPECT A/C CONTROL LE-
VER AND DIAL OPERATION
Move the control dial and lever left and right and check fro stiff-
ness and binding through the full range of the lever and dial.
If there is stiffness or binding, proceed next step.
2. ADJUST A/C CONTROL CABLES
(a) Set A/C control assembly in these conditions:
(1) Air inlet control lever in ºFRESHº position
(2) Temperature control dial in ºMAX. COOLº position.
(b) Adjust air inlet control cable.
(1) Pull out the inner of air inlet cable and hit the link of
blower unit on the link stopper.
(2) Set the cable connector to lever pin and clamp the
cable outer.
(c) Adjust air mix control cable.
Set the cable connector to air mix link pin on left side of
A/C unit and clamp the cable outer on.

AC0NJ±02
Z13472
Wire harness side: AC±88
± AIR CONDITIONINGAIR CONDITIONING AMPLIFIER
2570 Author: Date:
AIR CONDITIONING AMPLIFIER
ON±VEHICLE INSPECTION
1. REMOVE GLOVE COMPARTMENT
(See page BO±75)
2. INSPECT AMPLIFIER CIRCUIT
(a) Disconnect the amplifier connector and inspect the con-
nector on wire harness side, as shown in the chart below.
Test conditions:

Ignition switch ON

Blower speed switch HI

Temperature control lever Max. Cool
Tester connectionConditionSpecified condition
5 ± GroundConstantContinuity
9 ± 13Evaporator temperature at 25°C (77°F)Approx. 1.5 kW
14 ± 13Constant65 ± 125 W at 25°C (77°F)
8 ± GroundA/C switch ONBattery positive voltage
8 ± GroundA/C switch OFFNo voltage
8 ± GroundMode switch DEF. positionBattery positive voltage
10 ± GroundA/C switch ONBelow 4.0 V
10 ± GroundA/C switch OFFNo voltage
If circuit is as specified, try replacing the amplifier with a new
one. If the circuit is not as specified, inspect the circuits con-
nected to other parts.

Z13473
From back side:
± AIR CONDITIONINGAIR CONDITIONING AMPLIFIER
AC±89
2571 Author: Date:
(b) Connect the connector to amplifier and inspect wire har-
ness side connector from the back side, as shown in the
chart below.
Test conditions:

Running engine at idle speed

Blower speed switch HI

A/C switch ON

Temperature control lever Max Cool

Set on manifold gauge set
Tester connectionConditionSpecified condition
1 ± GroundMagnetic clutch is not engagedBelow 1.0 V
1 ± GroundMagnetic clutch is engagedNo voltage
7 ± GroundMagnetic clutch is not engagedBelow 1.0 V
7 ± GroundMagnetic clutch is engagedBattery positive voltage
2 ± GroundRefrigerant pressure 196 ± 1,340 kPaBattery positive voltage
2 ± GroundRefrigerant pressure
less than 196 or more than 3,140 kPaNo voltage
12 ± GroundRefrigerant pressure 196 ± 1,340 kPaBelow 1.0 V
12 ± GroundRefrigerant pressure
less than 196 or more than 3,140 kPaBattery positive voltage
12 ± GroundEngine coolant temp. 83°C (181°F) or belowBattery positive voltage
12 ± GroundEngine coolant temp. 93°C (199°F) or aboveBelow 1.0 V
If circuit is as specified, try replacing the amplifier with a new
one. If the circuit is not as specified, inspect the circuits con-
nected to other parts.