HYBRID CONTROL SYSTEM, Diagnostic DTC:P0617-142

DTC Code DTC Name
P0617-142 Starter Relay Circuit High

DESCRIPTION

DTC No. INF Code DTC Detection Condition Trouble Area
P0617 142

An ST signal from the hybrid vehicle control ECU assembly is on when the power switch is off.

(2 trip detection logic)

  • Wire harness or connector

  • Hybrid vehicle control ECU

  • Certification ECU (smart key ECU assembly)

WIRING DIAGRAM

A005DL7E26
*1 Certification ECU (Smart Key ECU Assembly)
*2 Hybrid Vehicle Control ECU

CAUTION / NOTICE / HINT

Note

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

Tech Tips

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Turn the power switch off and wait for 5 seconds or more.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)


    1. Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU connectors Click here.

      B005ZP3E01
      Text in Illustration
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

  2. CHECK CONNECTOR CONNECTION CONDITION (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Check the connector connection condition of the certification ECU (smart key ECU assembly).

      Tech Tips

      Refer to the Service Bulletin for the installation position.

      OK
      The connector is connected securely and there are no contact problems.

    NG

    CONNECT SECURELY

    OK

  3. CHECK HARNESS AND CONNECTOR (ST2 TERMINAL VOLTAGE)


    1. Turn the power switch off.

    2. A005BE0E01
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      L5-9 (ST2) - Body ground Power switch off Below 1 V

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Disconnect the L195 certification ECU (smart key ECU assembly) connector.

    2. A005BE0E01
      Text in Illustration
      *a

      Component with harness connected

      (Hybrid Vehicle Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      L5-9 (ST2) - Body ground Power switch off Below 1 V

    3. Reconnect the L195 certification ECU (smart key ECU assembly) connector.


    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR