Toyota 4Runner: Diagnosis System

Toyota 4Runner Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System(for Manual Air Conditioning System) / Diagnosis System

DIAGNOSIS SYSTEM

1. DESCRIPTION

(a) Air conditioning system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform troubleshooting.

2. CHECK DLC3

(a) Check the DLC3 (See page ).

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the F42 No. 1 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to ...

Other materials about Toyota 4Runner:

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK NO. 1 AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the F42 No. 1 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very usefu ...