| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001K4ZI |
| Model Year Start: 2020 | Model: RAV4 | Prod Date Range: [10/2019 - 01/2020] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B157213; Microphone Circuit Open; 2020 MY RAV4 RAV4 HV [10/2019 - 01/2020] | ||
|
DTC |
B157213 |
Microphone Circuit Open |
DESCRIPTION
This DTC is stored when the DCM (telephone transceiver assembly) detects a malfunction in the telephone microphone assembly circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
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 |
|
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
![2020 - 2022 MY RAV4 RAV4 HV [10/2019 - 10/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK DTC |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and wait for 10 seconds or more.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Click here
Body Electrical > Telematics > Clear DTCs
(f) Check for DTCs and check that no DTCs are output.
Click here
Body Electrical > Telematics > Trouble Codes
OK:
No DTCs are output.
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (DCM [TELEPHONE TRANSCEIVER ASSEMBLY] - MAP LIGHT SUB-ASSEMBLY) |
(a) Disconnect the G131 DCM (telephone transceiver assembly) connector.
(b) Disconnect the P20*1 or P14*2 map light sub-assembly connector.
- *1: for TMC Made
- *2: for TMMC Made
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G131-5 (MCVD) - P20-9 (MACC) |
Always |
Below 1 Ω |
|
G131-6 (MCI+) - P20-8 (MCO+) |
Always |
Below 1 Ω |
|
G131-7 (MCI-) - P20-7 (MCO-) |
Always |
Below 1 Ω |
|
G131-23 (SGND) - Body ground |
Always |
10 kΩ or higher |
|
G131-5 (MCVD) or P20-9 (MACC) - Body ground |
Always |
10 kΩ or higher |
|
G131-6 (MCI+) or P20-8 (MCO+) - Body ground |
Always |
10 kΩ or higher |
|
G131-7 (MCI-) or P20-7 (MCO-) - Body ground |
Always |
10 kΩ or higher |
for TMMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G131-5 (MCVD) - P14-3 (MACC) |
Always |
Below 1 Ω |
|
G131-6 (MCI+) - P14-4 (MCO+) |
Always |
Below 1 Ω |
|
G131-7 (MCI-) - P14-6 (MCO-) |
Always |
Below 1 Ω |
|
G131-23 (SGND) - Body ground |
Always |
10 kΩ or higher |
|
G131-5 (MCVD) or P14-3 (MACC) - Body ground |
Always |
10 kΩ or higher |
|
G131-6 (MCI+) or P14-4 (MCO+) - Body ground |
Always |
10 kΩ or higher |
|
G131-7 (MCI-) or P14-6 (MCO-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK DCM (TELEPHONE TRANSCEIVER ASSEMBLY) (TELEPHONE MICROPHONE ASSEMBLY POWER SOURCE) |
|
(a) Remove the map light sub-assembly but do not disconnect the connectors. Click here
|
|
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
for TMC Made
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
P20-9 (MACC) - Body ground |
Ignition switch ON |
4 to 6 V |
for TMC Made
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
P14-3 (MACC) - Body ground |
Ignition switch ON |
4 to 6 V |
Standard Resistance:
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P20-7 (MCO-) - Body ground |
Always |
Below 1 Ω |
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P14-6 (MCO-) - Body ground |
Always |
Below 1 Ω |
| NG |
|
|
|
4. |
INSPECT MAP LIGHT SUB-ASSEMBLY |
|
(a) Remove the map light sub-assembly. Click here
|
|
(b) Remove the telephone microphone assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
9 (MACC) - C-5 (MACC) |
Always |
Below 1 Ω |
|
8 (MCO+) - C-3 (MIC+) |
Always |
Below 1 Ω |
|
7 (MCO-) - C-2 (MIC-) |
Always |
Below 1 Ω |
|
C-5 (MACC) - C-3 (MIC+) |
Always |
10 kΩ or higher |
|
C-5 (MACC) - C-2 (MIC-) |
Always |
10 kΩ or higher |
|
C-3 (MIC+) - C-2 (MIC-) |
Always |
10 kΩ or higher |
for TMMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (MACC) - C-5 (MACC) |
Always |
Below 1 Ω |
|
6 (MCO+) - C-3 (MIC+) |
Always |
Below 1 Ω |
|
4 (MCO-) - C-2 (MIC-) |
Always |
Below 1 Ω |
|
C-5 (MACC) - C-3 (MIC+) |
Always |
10 kΩ or higher |
|
C-5 (MACC) - C-2 (MIC-) |
Always |
10 kΩ or higher |
|
C-3 (MIC+) - C-2 (MIC-) |
Always |
10 kΩ or higher |
| NG |
|
|
|
5. |
CHECK TELEPHONE MICROPHONE ASSEMBLY |
(a) Replace the telephone microphone assembly with a normal one and check if the same problem occurs again.
Click here
OK:
The system returns to normal.
(b) Clear the DTCs.
Click here
Body Electrical > Telematics > Clear DTCs
(c) Recheck for DTCs and check that no DTCs are output.
Click here
Body Electrical > Telematics > Trouble Codes
OK:
No DTCs are output.
| OK |
|
END (TELEPHONE MICROPHONE ASSEMBLY IS DEFECTIVE) |
| NG |
|
|
6. |
REPLACE DCM (TELEPHONE TRANSCEIVER ASSEMBLY) |
(a) Replace the DCM (telephone transceiver assembly) with a new one.
Click here
NOTICE:
- The ignition switch must be off.
- Do not exchange the DCM (telephone transceiver assembly) with one from another vehicle.
| NEXT |
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