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

DESCRIPTION

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

  • "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 ground circuit

  • Multi-media module receiver assembly

Tech Tips

"AVN1" refers to the circuit that includes the multi-media module receiver assembly.

WIRING DIAGRAM

A015ZTFE07
A015ZL3E09

INSPECTION PROCEDURE

Note


  • Turn the engine switch off before measuring the resistances between CAN bus main wires and between CAN bus branch wires.

  • After the engine 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 engine 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.

Tech Tips

Operating the engine switch, any switches, or any doors triggers related ECU and sensor communication with the CAN. This communication will cause the resistance value to change.

PROCEDURE


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


    1. Turn the engine switch off.

    2. A01609RE15

      Disconnect the J137 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J137-1 (CANH) - J137-2 (CANL) Engine switch off 54 to 69 Ω

    NG

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

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. A01609RE16

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J137-12 (GND1) - Body ground Engine switch off Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J137-16 (ACC1) - Body ground Engine switch on (ACC) 11 to 14 V
      J137-17 (+B1) - Body ground Engine switch off 11 to 14 V
      J137-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here