Toyota 4Runner: Ptc Heater Assembly

Toyota 4Runner Service Manual / Vehicle Interior / Heating / Air Conditioning / Ptc Heater Assembly

Components

COMPONENTS

ILLUSTRATION

Removal

REMOVAL

PROCEDURE

1. REMOVE AIR CONDITIONING UNIT

(a) Remove the air conditioning unit (See page ).

2. REMOVE QUICK HEATER ASSEMBLY

(a) Detach the 2 clamps.

(b) Remove the 2 screws and quick heater.

Inspection

INSPECTION

PROCEDURE

1. INSPECT QUICK HEATER ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A-1 - B-1	23 to 25°C (73 to 77°F)	0.5 to 2.5 Ω
A-2 - B-1	23 to 25°C (73 to 77°F)	0.5 to 2.5 Ω
A-2 - B-2	23 to 25°C (73 to 77°F)	0.5 to 2.5 Ω
A-3 - B-2	23 to 25°C (73 to 77°F)	0.5 to 2.5 Ω

If the result is not as specified, replace the quick heater assembly.

Text in Illustration

Connector A

Connector B

Component without harness connected

(Quick Heater Assembly)

Installation

INSTALLATION

PROCEDURE

1. INSTALL QUICK HEATER ASSEMBLY

(a) Attach the 2 clamps to install the quick heater.

(b) Install the 2 screws.

2. INSTALL AIR CONDITIONING UNIT

(a) Install the air conditioning unit (See page ).

Reassembly

REASSEMBLY PROCEDURE 1. INSTALL NO. 1 COOLER THERMISTOR NOTICE: If reusing the evaporator, do not insert the sensor into a location where the sensor was previously inserted. (a) Insert the se ...

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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET (a) This method uses a manifold gauge set to locate problem areas. Read the manifold gauge pressure when these conditions are established. Test conditions: Te ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT IMPORTANT POINTS CONCERNING TROUBLESHOOTING CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTICE: Refer to the troubleshooting procedures ...

Toyota 4Runner: Ptc Heater Assembly

Reassembly

Refrigerant

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