Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000026OLE
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B154913; Voice Recognition Microphone2 Circuit Open; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]

DTC

B154913

Voice Recognition Microphone2 Circuit Open

DESCRIPTION

The telephone microphone assembly RH is connected to the radio and display receiver assembly via voice recognition microphone 2 signal detection line.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

B154913

Voice Recognition Microphone2 Circuit Open

Voice recognition microphone 2 terminal (SNS2) disconnected

(2 trip detection logic)

  • Telephone microphone assembly RH
  • Radio and display receiver assembly
  • Harness or connector

Navigation System

A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the DCM (telematics transceiver), make sure to replace it with a new one.
  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

    Click here 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PRECAUTION

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY RH)

Pre-procedure1

(a) Disconnect the G137 radio and display receiver assembly connector.

(b) Disconnect the P26 telephone microphone assembly RH connector.

Procedure1

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G137-21 (SNS2) - P26-5 (SNS2)

Always

Below 1 Ω

G137-18 (MI2-) - P26-4 (MO2-)

Always

Below 1 Ω

G137-21 (SNS) or P26-5 (SNS2) - Body ground

Always

10 kΩ or higher

G137-18 (MI2-) or P26-4 (MO2-) - Body ground

Always

10 kΩ or higher

Post-procedure1

(d) None

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY (MO2-)

Pre-procedure1

(a) With the radio and display receiver assembly connectors connected, disconnect the S5 telephone microphone assembly RH connector.

Procedure1

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S5-4 (MO2-) - Body ground

Always

Below 1 Ω

Post-procedure1

(c) None

NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

3.

INSPECT TELEPHONE MICROPHONE ASSEMBLY RH (SNS2, MO2-)

Pre-procedure1

(a) Remove the telephone microphone assembly RH.

*a

Component without harness connected

(Telephone Microphone Assembly RH)

Procedure1

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

5 (SNS2) - 4 (MO2-)

Always

Below 1 Ω

Post-procedure1

(c) None

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE TELEPHONE MICROPHONE ASSEMBLY RH