| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM10000000271WW |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): B157913; Voice Recognition Microphone1 Circuit Open; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] | ||
|
DTC |
B157913 |
Voice Recognition Microphone1 Circuit Open |
DESCRIPTION
The telephone microphone assembly is connected to the radio and display receiver assembly via voice recognition microphone 1 signal detection line.
This DTC is stored when the radio and display receiver assembly detects disconnection of telephone microphone assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
DTC Output from |
Priority |
|---|---|---|---|---|---|
|
B157913 |
Voice Recognition Microphone1 Circuit Open |
Voice recognition microphone 1 terminal (SNS) 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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PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY) |
(a) Disconnect the I185 radio and display receiver assembly connector.
(b) Disconnect the T24 telephone microphone assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T24-5 (SNS1) - I185-6 (SNS) |
Always |
Below 1 Ω |
|
T24-4 (MO1-) - I185-19 (MIN-) |
Always |
Below 1 Ω |
|
T24-5 (SNS1) or I185-6 (SNS) - Body ground |
Always |
10 kΩ or higher |
|
T24-4 (MO1-) or I185-19 (MIN-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (MIN-) |
(a) With the radio and display receiver assembly connectors connected, disconnect the T24 telephone microphone assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T24-4 (MO1-) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
|
|
|
3. |
INSPECT TELEPHONE MICROPHONE ASSEMBLY (SNS1, MO1-) |
|
(a) Remove the telephone microphone assembly. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
5 (SNS1) - 4 (MO1-) |
Always |
Below 1 Ω |
| OK |
|
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
|
| NG |
|
REPLACE TELEPHONE MICROPHONE ASSEMBLY
|
|
|