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

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Diagnostic Trouble Code Chart
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Toyota 4Runner: Ptc Heater Assembly

Reassembly

Refrigerant

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