Toyota CH-R Service Manual: Lost Communication with Meter (B1324)

DESCRIPTION

This DTC is stored when a communication error occurs between the radio and display receiver assembly and combination meter assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B1324

Lost Communication with Meter

After the radio and display receiver assembly receives a registration information signal, which is sent by the combination meter assembly when the ignition switch is ON, 1 or more times, the radio and display receiver assembly does not receive the signal for 30 seconds or more

  • Combination meter assembly
  • Radio and display receiver assembly
  • Harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

    Click here

  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC is stored.
    • The radio and display receiver assembly or navigation ECU may not operate normally.

PROCEDURE

1.

CHECK DTC (METER / GAUGE SYSTEM)

(a) Clear the DTCs.

Body Electrical > Combination Meter > Trouble Codes

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Combination Meter > Clear DTCs

OK:

No DTCs are output.

NG

GO TO METER / GAUGE SYSTEM

OK

2.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the F131 radio and display receiver assembly connector.

(b) Disconnect the F4 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F131-5 (CNH1) - F4-36 (MSCH)

Always

Below 1 Ω

F131-6 (CNL1) - F4-37 (MSCL)

Always

Below 1 Ω

F131-5 (CNH1) - Body ground

Always

10 kΩ or higher

F131-6 (CNL1) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

REPLACE COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly.

Click here

(b) Clear the DTCs.

Click here

Body Electrical > Combination Meter > Trouble Codes

(c) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Combination Meter > Clear DTCs

OK:

No DTCs are output.

OK

END

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Voice Recognition Microphone Disconnected (B1579)
    DESCRIPTION The radio and display receiver assembly and map light assembly (telephone microphone assembly) are connected to each other using the microphone connection detection signal lines. Thi ...

    HD Radio Tuner Malfunction (B1551,B158D,B15A0,B15B0,B15B3,B15B7,B15BA)
    DESCRIPTION These DTCs are stored when a malfunction occurs in the radio and display receiver assembly. DTC No. Detection Item DTC Detection Condition T ...

    Other materials:

    Toyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): Terminals Of Ecu
    TERMINALS OF ECU Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition F47-4 (MACC) - F48-7 (GND1) B - LA Microphone power supply Ignition switch off ...

    Toyota CH-R Service Manual > Rear Spoiler: Reassembly
    REASSEMBLY PROCEDURE 1. INSTALL NO. 1 REAR SPOILER PROTECTOR HINT: Using the same procedure, install every No. 1 rear spoiler protector. When installing the No. 1 rear spoiler protector, heat the rear spoiler assembly using a heat light. Heating Temperature ...

    © 2017-2020 Copyright www.tochr.net
    0.0153