Toyota 4Runner: Diagnostic Trouble Code Chart

Toyota 4Runner Service Manual / Steering / Steering Column / Steering Lock 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.

Steering Lock System

DTC Code	Detection Item	Trouble Area
B2781	Open / Short in Steering Lock ECU	- Steering lock actuator assembly (steering lock ECU) - LIN communication system - Harness or connector of LIN bus line
B2782	Power Source Control ECU Malfunction	- Steering lock actuator assembly (steering lock ECU) - Power management control ECU - Harness or connector
B2788	IG2 Signal Malfunction	- IGN fuse - Steering lock actuator assembly (steering lock ECU) - Power management control ECU - Harness or connector

DTC Code

Detection Item

Trouble Area

See page

B2781

Open / Short in Steering Lock ECU

- Steering lock actuator assembly (steering lock ECU)

- LIN communication system

- Harness or connector of LIN bus line

B2782

Power Source Control ECU Malfunction

- Steering lock actuator assembly (steering lock ECU)

- Power management control ECU

- Harness or connector

B2788

IG2 Signal Malfunction

- IGN fuse

- Steering lock actuator assembly (steering lock ECU)

- Power management control ECU

- Harness or connector

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 ...

IG2 Signal Malfunction (B2788)

DESCRIPTION The steering lock ECU determines the on/off status of the engine switch through the IG2 signal circuit. The steering lock ECU does not lock the steering when it receives the IG2 relay ...

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Communication Malfunction No. 1 (B2797)
DESCRIPTION This DTC is stored when a communication error occurs between the transponder key amplifier and transponder key ECU assembly. Some possible reasons for the communication error are: 1) 2 or more ignition keys are positioned too close together, o ...

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