| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000026S7Z |
| Model Year Start: 2023 | Model: RAV4 | Prod Date Range: [10/2022 - ] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B157213; Microphone Circuit Open; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 - ] | ||
|
DTC |
B157213 |
Microphone Circuit Open |
DESCRIPTION
This DTC is stored when the DCM (telematics transceiver) detects a malfunction in the telephone microphone assembly LH circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
DTC Output from |
Priority |
|---|---|---|---|---|---|
|
B157213 |
Microphone Circuit Open |
Current at terminal MCVD is lower than the malfunction threshold for 10 seconds or more while the ignition switch is ON |
|
Telematics |
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. Refer to Precaution for Safety Connect System.
Click here
![2023 - 2024 MY RAV4 RAV4 HV [10/2022 - ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CLEAR DTC |
Pre-procedure1
(a) Turn the ignition switch to ON and wait for 10 seconds or more.
Procedure1
(b) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
Post-procedure1
(c) None
|
|
2. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Telematics > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
B157213 is not output |
A |
|
B157213 is output |
B |
| A |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM [TELEMATICS TRANSCEIVER] - TELEPHONE MICROPHONE ASSEMBLY LH) |
Pre-procedure1
(a) Disconnect the G131 DCM (telematics transceiver) connector.
(b) Disconnect the P25 telephone microphone assembly LH connector.
Procedure1
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G131-5 (MCVD) - P25-1 (MAC1) |
Always |
Below 1 Ω |
|
G131-6 (MCI+) - P25-2 (MO1+) |
Always |
Below 1 Ω |
|
G131-7 (MCI-) - P25-4 (MO1-) |
Always |
Below 1 Ω |
|
G131-23 (SGND) - Body ground |
Always |
10 kΩ or higher |
|
G131-5 (MCVD) - Body ground |
Always |
10 kΩ or higher |
|
G131-6 (MCI+) - Body ground |
Always |
10 kΩ or higher |
|
G131-7 (MCI-) - Body ground |
Always |
10 kΩ or higher |
Post-procedure1
(d) None
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK DCM (TELEMATICS TRANSCEIVER) (TELEPHONE MICROPHONE ASSEMBLY LH POWER SOURCE) |
Pre-procedure1
|
(a) Remove the telephone microphone assembly LH but do not disconnect the connectors. HINT: Click here
|
|
Procedure1
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
P25-1 (MAC1) - Body ground |
Ignition switch ON |
7.5 to 8.5 V |
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P25-4 (MO1-) - Body ground |
Always |
Below 1 Ω |
Post-procedure1
(c) None
| OK |
|
|
|
5. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver).
HINT:
Click here
NOTICE:
- The ignition switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
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