Toyota 4Runner: Diagnosis System

Toyota 4Runner Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System / Diagnosis System

DIAGNOSIS SYSTEM

1. DESCRIPTION

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

2. CHECK DLC3

(a) Check the DLC3 (See page ).

3. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (See page ). (b) Measure the resistance and voltage accor ...

Dtc Check / Clear

DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / (desired sy ...

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Dcm Operation History
DCM OPERATION HISTORY 1. DCM OPERATION HISTORY This function shows the telematics network status when the DCM (Telematics Transceiver) was operated. Use this function when no DTC is stored but the telematics system is unable to connect to the call center ...

Installation
INSTALLATION PROCEDURE 1. INSTALL SPIRAL CABLE SUB-ASSEMBLY (a) Attach the 3 claws to install the spiral cable. CAUTION: When replacing the spiral cable with a new one, remove the lock pin before installing the steering wheel assembly. (b) Connect the ...