| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026OZU |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): B154913; Voice Recognition Microphone2 Circuit Open; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] | ||
|
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.
This DTC is stored when the radio and display receiver assembly detects disconnection of telephone microphone assembly RH.
|
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) |
|
Navigation System |
A |
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.
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![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): PRECAUTION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY RH) |
(a) Disconnect the I176 radio and display receiver assembly connector.
(b) Disconnect the T25 telephone microphone assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I176-21 (SNS2) - T25-5 (SNS2) |
Always |
Below 1 Ω |
|
I176-18 (MI2-) - T25-4 (MO2-) |
Always |
Below 1 Ω |
|
I176-21 (SNS2) or T25-5 (SNS2) - Body ground |
Always |
10 kΩ or higher |
|
I176-18 (MI2-) or T25-4 (MO2-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
2. |
INSPECT RADIO & DISPLAY RECEIVER ASSEMBLY (MI2-) |
(a) With the I176 radio and display receiver assembly connectors connected, disconnect the T25 telephone microphone assembly RH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T25-4 (MO2-) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
|
|
|
3. |
INSPECT TELEPHONE MICROPHONE ASSEMBLY RH (SNS2, MO2-) |
|
(a) Remove the telephone microphone assembly RH. |
|
(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 |
| OK |
|
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
|
| NG |
|
REPLACE TELEPHONE MICROPHONE ASSEMBLY RH
|
|
|