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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 336 (Hybrid Vehicle Control System - Diagnostics) >> Circuit Inspection >> DTC P3106: ECM Communication Circuit Malfunction >> Circuit Description - DTC P3106 - Information Codes 209, 210, 211 >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for open and short in wire harness between HV ECU terminals (ETH+, ETH-) and ECM terminals (ETH+, ETH-)  . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
    1. NG: Repair or replace wire harness. 
    2. OK:  Check and replace ECM . See DIAGNOSTIC TROUBLE CODE CHART .
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