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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 P3135 Circuit Breaker Sensor Malfunction >> Circuit Description - DTC P3135 - Information Codes 348, 349 >> 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 circuit breaker sensor No. 1 and No. 2 terminals and HV ECU AS1G and AS1 terminals  . See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
    NOTE: Confirm that there is no open circuit in the wire harness. The circuit breaker sensor circuit has +B short if the voltage of the HV ECU AS1 terminal is more than 5V with the ignition ON.
    1. NG:  Repair or replace wire harness.
    2. OK:  Check for open in resistance between circuit breaker sensor terminals and then replace circuit breaker sensor (Circuit breaker sensor resistance: 820 +/- 82 Ω).
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