1996 TOYOTA T100 check engine

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− AIR CONDITIONINGCONDENSER
AC−49
1983 Author: Date:
1996 TOYOTA T100 (RM449U)
CONDENSER
ON−VEHICLE INSPECTION
1. INSPECT CONDENSER FINS FOR BLOCKAGE OR DAMAGE
If the fins are clogged, wash them with water and dry with compressed air.
NOTICE:
Be careful not to damage the fins.
If the fins are bent, straighten them with a screwdriver or pliers.
2. INSPECT CONDENSER AND FITTINGS FOR LEAKAGE
Using a gas leak detector, check for leakage of refrigerant.
If there is leakage, check the tightening torque at the joints.

Downloaded from www.Manualslib.com manuals search engine AC0FV−01
AC−54
− AIR CONDITIONINGEVAPORATOR
1996 TOYOTA T100 (RM449U)
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
2. CHECK FITTING FOR CRACKS FOR SCRATCHES
If necessary, repair or replace.

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− AIR CONDITIONINGEXPANSION VALVE
AC−59
1993 Author: Date:
1996 TOYOTA T100 (RM449U)
EXPANSION VALVE
ON−VEHICLE INSPECTION
1. CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE
2. SET ON MANIFOLD GAUGE SET (See page AC−17)
3. RUN ENGINE
(a) Run the engine at 1,500 rpm for at least 5 minutes.
(b) Then check that the high pressure reading is 1.37 − 1.57 MPa (14 − 16 kgf/cm
2, 199 − 228 psi).
4. CHECK EXPANSION VALVE
If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/cm
2, 0 psi).
HINT:
When the low pressure drops to 0 kPa (0 kgf/cm
2, 0 psi), check the receiver’s IN and OUT sides for no tem-
perature difference.

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AC−62
− AIR CONDITIONINGWATER VALVE
1996 Author: Date:
1996 TOYOTA T100 (RM449U)
WATER VALVE
ON−VEHICLE INSPECTION
1. WARM UP ENGINE
2. DISCONNECT WATER VALVE CONTROL CABLE
3. INSPECT WATER VALVE OPERATION
(a) Check that warm air blown out the vent when the water valve lever is moved to ”WARM” position.
(b) Check that cool air blown out when the water valve is moved to the ”COOL” position.
If operation is not as specified, replace the water valve.
4. CONNECT WATER VALVE CONTROL CABLE
After connection, adjust the control cable.

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I02318
1
2
AC−66
− AIR CONDITIONINGBLOWER MOTOR
1996 TOYOTA T100 (RM449U)
INSPECTION
INSPECT BLOWER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
the negative (−) lead to terminal 2, then check that the motor op-
erations smoothly.
If operation is not as specified, replace the blower motor.

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Z04350
Connector
3 21
4
Z13470
Low Pressure High Pressure
Side Side
ON (Continuity)
3,140 kpa 196 kpa
(2.0 kgf/cm
2,28psi)
OFF (No Continuity)(32.0 kgf/cm2,455psi)
OFF (No Continuity)
− AIR CONDITIONINGPRESSURE SWITCH
AC−75
2009 Author: Date:
1996 TOYOTA T100 (RM449U)
PRESSURE SWITCH
ON−VEHICLE INSPECTION
1. SET ON MANIFOLD GAUGE SET
(See page AC−17)
2. REMOVE GLOVE COMPARTMENT DOOR
(See page BO−36)
3. DISCONNECT CONNECTOR FROM COOLING UNIT
4. SET VEHICLE IN THESE CONDITIONS:
(a) Running engine at 2,000 rpm
(b) Blower speed control switch at HI
(c) Temperature control lever MAX. COOL
(d) A/C switch ON
5. INSPECT PRESSURE SWITCH OPERATION
(a) Connect the positive (+) lead from the ohmmeter to termi-
nal 1 and negative (−) lead to terminal 3.
(b) Check continuity between terminals when refrigerant
pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.

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I02282
OFF ON
64
I02283
OFF ON
6 4
3
Z07777
1
3 4 65
− AIR CONDITIONINGAIR CONDITIONING SWITCH
AC−83
1996 TOYOTA T100 (RM449U)
INSPECTION
1. INSPECT A/C INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
6 and negative (−) lead to terminal 4 and check that the
indicator lights up, when A/C switch ON.
(b) Connect the positive (+) lead from the battery to terminal
3 and check that the indicator dims
If operations are not as specified, replace the A/C switch.
2. INSPECT A/C SWITCH CONTINUITY
Condition/ CircuitTester connectionSpecified condition
OFF−No continuity
ON4 − 5
4 − 6Continuity
Illumination circuit3 − 1Continuity
If continuity is not as specified, replace the A/C switch

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AC0GP−01
− AIR CONDITIONINGHEATER CONTROL ASSEMBLY
AC−85
2019 Author: Date:
1996 TOYOTA T100 (RM449U)
HEATER CONTROL ASSEMBLY
ON−VEHICLE INSPECTION
INSPECT HEATER CONTROL LEVER OPERATION
Move the control lever and dials left and right check for stiffness
and binding the full range of the lever and dials.
If there is stiffness and binding, adjust the heater control cable.