Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Radio Receiver Assembly Communication Stop Mode

Toyota Tacoma 2015-2018 Service Manual / Can Communication / Can Communication System / Radio Receiver Assembly Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Radio Receiver Assembly Communication Stop Mode

Either condition is met:

  • Communication stop for "Display and Navigation (AVN1)" is indicated on the "Communication Bus Check" screen of the Techstream.

    Click here

  • Communication system DTCs (DTCs that start with U) that correspond to "Radio Receiver Assembly Communication Stop Mode" in "DTC Combination Table" are output.

    Click here

  • Radio and display receiver assembly branch line or connector
  • Power source circuit of radio and display receiver assembly
  • Radio and display receiver assembly ground circuit
  • Radio and display receiver assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

NOTICE:

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

    Click here

  • Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  • Some parts must be initialized and set when replacing or removing and installing parts.

    Click here

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here

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

HINT:

  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE

1.

CHECK FOR OPEN IN CAN BUS LINES (RADIO AND DISPLAY RECEIVER ASSEMBLY BRANCH LINE)

(a) Disconnect the cable from the negative (-) battery terminal.

(b) Disconnect the radio and display receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R31-9 (CANH) - R31-10 (CANL)

Cable disconnected from negative (-) battery terminal

54 to 69 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

NG

REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY)

OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Disconnect the radio and display receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R30-7 (GND1) - Body ground

Cable disconnected from negative (-) battery terminal

Below 1 Ω

(c) Connect the cable to the negative (-) battery terminal.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

R30-3 (ACC1) - Body ground

Ignition switch ACC

11 to 14 V

R30-4 (+B1) - Body ground

Always

11 to 14 V

R31-1 (IG) - Body ground

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

Blind Spot Monitor Sensor Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Blind Spot Monitor Sensor Communication Stop Mode Either Condition is met: C ...

Central Gateway ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Central Gateway ECU Communication Stop Mode Communication system DTCs (DTCs that start wit ...

Other materials:

System Diagram
SYSTEM DIAGRAM Communication Table Sender ECU Receiver ECU Signal Line *1: for Vacuum Brake Booster *2: for Hydraulic Brake Booster Forward Recognition Camera Combination Meter Assembly ...

Side Moulding
Components COMPONENTS ILLUSTRATION ILLUSTRATION Removal REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. When removing the lower No. 2 side panel moulding, heat the vehicle body a ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 2 ANTENNA CORD SUB-ASSEMBLY (a) Using hot-melt glue, install the No. 2 antenna cord sub-assembly as shown in the illustration. 2. INSTALL NO. 1 ROOF WIRE (w/ Vanity Light) (a) w/ EC Mirror: (1) Align the aiming tape as shown in the illustration. ...

© 2011-2021 Copyright www.ttguide.net