DRIVELINE & DIFFERENTIAL
DL001-04
REVISED

Title:
4WD ECU SERVICE PRECAUTIONS

Models:
'03 - '04 4Runner

April 29, 2004

TSB REVISION NOTICE :May 12, 2004: The Applicable Vehicles section has been changed.
All previous versions of this TSB should be discarded.

Introduction

When servicing or disconnecting the 4WD ECU, be sure to disconnect all power by removing the 20A 4WD fuse or the negative battery terminal. Failure to disconnect power for the 4WD ECU before performing Repair Manual diagnostic procedures may cause the transfer case actuator to activate and damage the transfer case actuator.

Applicable Vehicles

^ 2003 - 2004 model year 4Runner vehicles equipped with V6 or V8 engines and multi-mode 4WD and full-time 4WD ONLY.


Repair Procedure

CAUTION :Irreparable damage to the transfer case actuator may result when the proper precautions and repair procedures are NOT followed. Damage to the actuator caused by improper repair procedures is NOT a warrantable repair.

Refer to the Technical Information System (TIS) for proper repair precautions. Use the applicable model year 4Runner Repair Manual: Introduction; Repair Instruction; Precaution.







Warranty Information