Toyota 4Runner: Diagnostic Trouble Code Chart

Toyota 4Runner Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System / Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Lighting System

DTC Code	Detection Item	Trouble Area	See page
B1244	Light Sensor Circuit Malfunction	- Automatic light control sensor - Main body ECU (multiplex network body ECU) - Harness or connector

DTC Code

Detection Item

Trouble Area

See page

B1244

Light Sensor Circuit Malfunction

- Automatic light control sensor

- Main body ECU (multiplex network body ECU)

- Harness or connector

Data List / Active Test

DATA LIST / ACTIVE TEST 1. 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 p ...

Light Sensor Circuit Malfunction (B1244)

DESCRIPTION The automatic light control sensor detects ambient light, converts it into an electrical signal, and outputs it to the main body ECU. The main body ECU turns on or off the headlights ...

Other materials about Toyota 4Runner:

Removal
REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTICE: When disconnecting the cable, some systems ne ...

Monitor Drive Pattern
MONITOR DRIVE PATTERN 1. TEST MONITOR DRIVE PATTERN FOR ECT CAUTION: Perform this drive pattern on a level surface and strictly observe the posted speed limits and traffic laws while driving. HINT: Performing this drive pattern is one method to simulate ...