AUDIO AND VISUAL SYSTEM(for Radio and Display Type) Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio and display receiver assembly.

WIRING DIAGRAM

A01CYTWE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Proceed to
      w/o Stop and Start System
      w/ Stop and Start System

    w/ Stop and Start System

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ENGINE STOP AND START ECU) Click here

    w/o Stop and Start System

  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01CYPQC03
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the radio and display receiver assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G141-7 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      w/o Stop and Start System
      Tester Connection Condition Specified Condition
      G141-4 (+B1) - G141-7 (GND1) Always 11 to 14 V
      G141-3 (ACC1) - G141-7 (GND1) Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      G143-1 (IG) - G141-7 (GND1) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Standard Voltage
      w/ Stop and Start System
      Tester Connection Condition Specified Condition
      G141-4 (+B1) - G141-7 (GND1) Always 10.5 to 14 V
      G141-3 (ACC1) - G141-7 (GND1) Ignition switch ACC 10.5 to 14 V
      Ignition switch off Below 1 V
      G143-1 (IG) - G141-7 (GND1) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - ENGINE STOP AND START ECU)


    1. Disconnect the G141 radio and display receiver assembly connector.

    2. Disconnect the G87 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G141-4 (+B1) - G87-2 (BO1) Always Below 1 Ω
      G141-3 (ACC1) - G87-3 (ACO) Always Below 1 Ω
      G141-4 (+B1) - Body ground Always 10 kΩ or higher
      G141-3 (ACC1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ENGINE STOP AND START ECU


    1. A01CY6KC05
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the radio and display receiver assembly connector.

    2. Reconnect the G87 engine stop and start ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G141-4 (+B1) - Body ground Always 10.5 to 14 V
      G141-3 (ACC1) - Body ground Ignition switch ACC 10.5 to 14 V
      Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STOP AND START SYSTEM Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01CYPQC04
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the radio and display receiver assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G141-7 (GND1) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G143-1 (IG) - G141-7 (GND1) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR