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CAN COMMUNICATION SYSTEM Multi-media Module Receiver Assembly Communication Stop Mode

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DTC Code DTC Name
  Multi-media Module Receiver Assembly Communication Stop Mode
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DESCRIPTION

Detection Item Symptom Trouble Area
Multi-media Module Receiver Assembly Communication Stop Mode

  • "Display and Navigation (AVN1)" is not displayed on the Communication Bus Check screen of the intelligent tester

  • Communication system DTCs (DTCs that start with U) that are output correspond to "Multi-media Module Receiver Assembly Communication Stop Mode" in "DTC Combination Table"

  • Multi-media module receiver assembly branch line or connector

  • Power source circuit of multi-media module receiver assembly

  • Multi-media module receiver assembly
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • Turn the power switch off before measuring the resistances between CAN main bus lines and between CAN branch lines.

  • Turn the power switch off before inspecting CAN bus lines for a ground short.

  • After the power switch is turned off, check that the key reminder warning system and light reminder warning system are not operating.

  • Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

Tip:

  • Operating the power switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

  • Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.

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PROCEDURE


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    CHECK FOR OPEN IN CAN BUS LINES (MULTI-MEDIA MODULE RECEIVER ASSEMBLY BRANCH LINE)


    1. Turn the power switch off.

    2. A003Z1JE05

      Disconnect the H147 multi-media module receiver assembly connector.

      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Multi-media Module Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-1 (CANH) - H147-2 (CANL) Power switch off 54 to 69 Ω

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    CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. A003Z1JE06

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H147-12 (GND1) - Body ground Power switch off Below 1 Ω
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Multi-media Module Receiver Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H147-15 (IG) - Body ground Power switch on (IG) 11 to 14 V
      H147-16 (ACC1) - Body ground Power switch on (ACC) 11 to 14 V
      H147-17 (+B1) - Body ground Power switch off 11 to 14 V

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    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLYClick here

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    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY)

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    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)