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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 457 (Cruise Control System - Diagnosis) >> Circuit Inspection >> DTC U9235/71: Communication Error 1 From Laser Radar Sensor to Distance Control ECU >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for open and short in wire harness and connector between terminals laser radar sensor and distance control ECU (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or replace wire harness or connector. 
    2. OK : Replace EOM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
  2. Does it operate normally after replacement of laser radar sensor? 
    1. YES : Replace laser radar sensor. 
    2. NO : Check and replace distance control ECU (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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