heater TOYOTA TERCEL 1996 Service Owner's Guide

- AIR CONDITIONINGTROUBLESHOOTING
AC-17
1169 Author
: Date
:
1996 TERCEL (RM440U) Insufficient cooling
1. Refrigerant volume
2. Drive belt
3. Refrigerant cooling system
4. A/C amplifier
5. Refrigerant lines
6. ThermistorAC-3
AC-18
-
AC-66
-
AC-57
No engine idle up when A/C switch on
1. Idle air control (IAC) valve
2. A/C amplifier
3. Wiring and wiring connections-
AC-66
-
No warm air comes out
1. Engine coolant volume
2. A/C control lever adjustment
3. Heater radiator-
AC-73
AC-31

AC1CF-04
- AIR CONDITIONINGHEATER UNIT
AC-31
1183 Author
: Date
:
1996 TERCEL (RM440U)
HEATER UNIT
COMPONENTS

AC1CG-04
AC2884
Hose Clip
Heater Radiator
Pipe
Water Hose
InsulatorLeft Side
of Vehicle
N12242
AC-32
- AIR CONDITIONINGHEATER UNIT
1996 TERCEL (RM440U)
REMOVAL
1. REMOVE COOLING UNIT
(See page AC-27)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSES FROM HEATER RA-
DIATOR PIPES
HINT:

Push the water hose onto the heater radiator pipe as far
as the ridge on the pipe.

Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE PIPE GROMMETS
5. REMOVE INSTRUMENT PANEL SAFETY PAD AND
REINFORCEMENT (See page BO-48)
6. REMOVE HEATER UNIT
Remove the 2 nuts and the heater unit.
7. REMOVE HEATER RADIATOR
(a) Remove the screw and clamp.
(b) Pull out the heater radiator.

AC1CK-02
- AIR CONDITIONINGHEATER UNIT
AC-33
1996 TERCEL (RM440U)
INSTALLATION
Installation is in the reverse order of removal procedure (See page AC-32).

AC2WX-02
- AIR CONDITIONINGHEATER RADIATOR
AC-53
1205 Author
: Date
:
1996 TERCEL (RM440U)
HEATER RADIATOR
INSPECTION
1. REMOVE HEATER RADIATOR (See page AC-32)
2. INSPECT FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
3. REINSTALL HEATER RADIATOR (See page AC-32)

Z06166
12 34
5
12 345
AC2X8-02
AC-62
- AIR CONDITIONINGHEATER MAIN RELAY
1214 Author
: Date
:
1996 TERCEL (RM440U)
HEATER MAIN RELAY
INSPECTION
INSPECT HEATER MAIN RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant1 - 3
2 - 4Continuity
Apply B+ between
terminals 3 and 5.4 - 5Continuity
If continuity is not as specified, replace the relay.

AC3IV-01
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY
AC-69
1221 Author
: Date
:
1996 TERCEL (RM440U)
HEATER CONTROL ASSEMBLY
ON-VEHICLE INSPECTION
INSPECT A/C CONTROL LEVERS OPERATION
Move the control dials and lever left and right and check for stiffness and binding through the full range of
the levers.

AC3IW-01
AC-70
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY
1996 TERCEL (RM440U)
REMOVAL
1. REMOVE GLOVE COMPARTMENT PARTS
(See page BO-45).
2. REMOVE INSTRUMENT LOWER FINISH PANEL
(See page BO-45).
3. REMOVE CENTER CLUSTER FINISH PANEL
(See page BO-45).
4. DISCONNECT A/C CONTROL CABLES
5. REMOVE A/C CONTROL ASSEMBLY
(a) Remove the heater control knobs.
(b) Remove the A/C switch.
(c) Remove the heater control panel.
(d) Remove the 4 screws and A/C control assembly.

AC1DO-04
Z16144
Z07777
1
3
4 5 6
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY
AC-71
1996 TERCEL (RM440U)
INSPECTION
1. INSPECT BLOWER SWITCH CONTINUTY
Position / CircuitTester connectionSpecified condition
OFF-No continuity
LO5 - 6Continuity
M11 - 5 - 6Continuity
M22 - 5 - 8Continuity
HI5 - 6 - 8Continuity
Illumination circuit3 - 4Continuity
If continuity is not as specified, replace the A/C control assem-
bly.
2. INSPECT A/C SWITCH CONTINUITY
Condition/ CircuitTester connectionSpecified condition
OFF-No continuity
ON4 - 5
4 - 6Continuity
Illumination circuit1 - 3Continuity
Switch continuity:
If continuity is not as specified, replace the switch.
Illumination circuit:
If continuity is not as specified, test the bulb.

AC2XH-02
AC-72
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY
1996 TERCEL (RM440U)
ADJUSTMENT
1. ADJUST AIR INLET DAMPER CONTROL CABLE
Set the air inlet damper on ºRECIRCº position, install the control
control cable and lock clamp.
2. ADJUST MODE DAMPER CONTROL CABLE
Set the air inlet damper on ºFACEº position, install the control
cable and lock the clamp.
3. ADJUST AIR MIX DAMPER CONTROL CABLE
Set the air mix damper on ºCOOLº position, install the control
cable and lock the clamp.