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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 P3125: Converter & Inverter Assembly Malfunction >> Circuit Description - DTC P3125 - Information Codes 312, 313, 314, 315 >> 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, short and +B short in wire harness between HV ECU GIT and GIVG terminals and converter & inverter G-GINV or G-GINV terminals  . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
    NOTE: Confirm that there is no open circuit in the wire harness. The generator inverter temperature sensor circuit has +B short if the voltage between the HV ECU GIT or GIVG terminal and body ground is always more than 5V with the ignition ON.
    1. NG:  Repair or replace wire harness.
    2. OK:  Check for open in generator inverter temperature sensor and then replace converter & inverter assembly. Check generator inverter temperature sensor. See ON-VEHICLE INSPECTION OF CONVERTER & INVERTER .
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