CAN COMMUNICATION SYSTEM(for RHD) Hybrid Vehicle Control ECU Communication Stop Mode

DESCRIPTION

Detection Item Symptom Trouble Area
Hybrid Vehicle Control ECU Communication Stop Mode

Either condition is met:


  • "Hybrid Vehicle Control" is not displayed on the "Bus Check" screen.

  • "Hybrid Vehicle Control ECU Communication Stop Mode" in "DTC Communication Table" applies.

  • Power source or inside of hybrid vehicle control ECU

  • Hybrid vehicle control ECU

WIRING DIAGRAM

A000VH9E03
*a from Auxiliary Battery
*b from ST CUT/IGCT2 Relay
*c from IG2 Relay
*d Hybrid Vehicle Control ECU

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY AND BODY GROUND)


    1. Disconnect the hybrid vehicle control ECU connectors.

      A000U4FE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

      		 - -

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A76-1 (BATT) - Body ground Always 11 to 14 V
      A76-4 (IGSW) - Body ground Power switch on (IG) 11 to 14 V
      A78-1 (+B1) - Body ground Power switch on (IG) 11 to 14 V
      A78-2 (+B2) - Body ground Power switch on (IG) 11 to 14 V

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A77-7 (E1) - Body ground Always Below 1 Ω
      A77-6 (E12) - Body ground Always Below 1 Ω
      E58-7 (GND1) - Body ground Always Below 1 Ω
      E58-6 (GND2) - Body ground Always Below 1 Ω

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR