AUDIO AND VISUAL SYSTEM(w/o Multi-display), Diagnostic DTC:01-D6 and 01-D7

DTC Code DTC Name
01-D6 No Master
01-D7 Connection Check Error

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

01-D6

No Master

Either condition is met:

  • The device that stores (stored) the code has (had) been disconnected when the engine switch is on (ACC) or on (IG).

  • The master device has (had) been disconnected when this code is stored.

  • Radio receiver power source circuit

  • Power source circuit of the component which has stored this code

  • AVC-LAN circuit between the radio receiver assembly and the component which has stored this code

  • Component which has stored this code

  • Radio receiver assembly

01-D7

Connection Check Error

Either condition is met:

  • The device that stored the code has (had) been disconnected after the engine starts (started).

  • The master device has (had) been disconnected when this code is (was) stored.

  • Radio receiver power source circuit

  • Power source circuit of the component which has stored this code

  • AVC-LAN circuit between the radio receiver assembly and the component which has stored this code

  • Component which has stored this code

  • Radio receiver assembly
Tip:

  • 01-D6: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.

  • 01-D7: When 210 seconds have elapsed after disconnecting the power supply connector of the master unit with the engine switch in on (ACC) or on (IG), this code is stored.

Note:

  • Before starting troubleshooting, be sure to clear DTCs to clear codes stored due to the reasons described in Hint above. Then, check for DTCs and troubleshoot according to the output DTCs.

  • The radio receiver assembly is the master unit.

  • Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

WIRING DIAGRAM

E195968E19

CAUTION / NOTICE / HINT

Note:

Be sure to read Description before performing the following procedures.

PROCEDURE

  1. CHECK RADIO RECEIVER POWER SOURCE CIRCUIT

    1. Refer to Radio Receiver Power Source Circuit.

      Click here

      Tip:

      If the power source circuit is operating normally, proceed to the next step.

      Result

      Result

      NEXT
    NEXT

  2. IDENTIFY COMPONENT WHICH HAS STORED THIS CODE

    1. Enter the diagnostic mode.

      E146440N01

    2. Press the preset switch "channel 3" to change to "Detailed Information Mode".

    3. Identify the component which has stored this code.

      Component Table

      Component

      Physical Address

      Radio receiver assembly

      190

      Stereo component amplifier assembly

      440

      Multi-media interface ECU

      388
      Tip:

      • "440 (stereo component amplifier assembly)" is the component which has stored this code in the example shown in the illustration.

      • For details of the DTC display, refer to DTC Check/Clear.

        Click here

      Result

      Result

      NEXT
    NEXT

  3. CHECK COMPONENT WHICH HAS STORED THIS CODE

    1. Select the component which has stored this code.

      Tip:

      The "Bluetooth" handsfree module is built into the radio receiver assembly. If there is a problem between the "Bluetooth" handsfree module and radio receiver assembly, replace the radio receiver assembly.

      Component Table

      Component

      Proceed to

      Except radio receiver assembly

      A

      Radio receiver assembly (190)

      B
    B

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here

    A

  4. CHECK POWER SOURCE CIRCUIT OF COMPONENT WHICH HAS STORED THIS CODE

    1. Inspect the power source circuit of the component which has stored this code.

      Tip:

      If the power source circuit is operating normally, proceed to the next step.

      Component Table

      Component

      Proceed to

      Stereo component amplifier assembly

      Stereo Component Amplifier Power Source Circuit

      Click here

      Multi-media interface ECU

      Multi-media Interface ECU Power Source Circuit

      Click here

      Result

      Result

      NEXT
    NEXT

  5. INSPECT RADIO RECEIVER ASSEMBLY

    1. E145834N01

      Disconnect the H29 and H28 radio receiver assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H29-5 (ATX+) - H29-15 (ATX-)

      Always

      60 to 80 Ω

      H28-9 (TXM+) - H28-10 (TXM-)

      Always

      60 to 80 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

    Tip:

    For details of the connectors, refer to Terminals of ECU.

    Click here

    1. Referring to the wiring diagram, check the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

      1. Disconnect all connectors between the radio receiver assembly and the component which has stored this code.

      2. Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

        OK

        There is no open or short circuit.

        Result

        Result

        OK

        NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE COMPONENT WHICH HAS STORED THIS CODE

    1. Replace the component which has stored this code with a normal one and check if the same problem occurs again.

      OK

      The same problem does not occur.

      Result

      Result

      OK

      NG
    OK

    END

    NG

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here