CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B157111,B157113; Indicator (Green) Circuit Short to Ground; 2020 MY RAV4 RAV4 HV [10/2019

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001K4ZH
Model Year Start: 2020	Model: RAV4	Prod Date Range: [10/2019 - 01/2020]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B157111,B157113; Indicator (Green) Circuit Short to Ground; 2020 MY RAV4 RAV4 HV [10/2019 - 01/2020]

DTC

B157111

Indicator (Green) Circuit Short to Ground

DTC

B157113

Indicator (Green) Circuit Open

DESCRIPTION

This DTC is set when the DCM (telephone transceiver assembly) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the ignition switch is turned to ON.

If the safety connect system is not active, the manual (SOS) switch green indicator will turn off.

If the safety connect system is active, the manual (SOS) switch green indicator will blink while communicating with the call center.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B157111	Indicator (Green) Circuit Short to Ground	Manual (SOS) switch green indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the ignition switch is ON	DCM (telephone transceiver assembly) Map light sub-assembly (manual [SOS] switch) Harness or connector
B157113	Indicator (Green) Circuit Open	Manual (SOS) switch green indicator impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the ignition switch is ON	DCM (telephone transceiver assembly) Map light sub-assembly (manual [SOS] switch) Harness or connector

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

PROCEDURE

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(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.

USE SIMULATION METHOD TO CHECK

2.	INSPECT MAP LIGHT SUB-ASSEMBLY (MANUAL [SOS] SWITCH) (GREEN INDICATOR)

(a) Remove the map light sub-assembly (manual [SOS] switch).

Click here

for TMC Made

for TMMC Made

Component without harness connected

(Map Light Sub-assembly (Manual [SOS] Switch))

(b) Connect 2 dry-cell batteries (1.5 V each) in series.

Connect a positive (+) lead from batteries to terminal 23 (IND2) and a negative (-) lead to terminal 14 (GND3) of the map light sub-assembly (manual [SOS] switch) connector.

for TMMC Made:

Connect a positive (+) lead from batteries to terminal 12 (IND2) and a negative (-) lead to terminal 10 (GND3) of the map light sub-assembly (manual [SOS] switch) connector.

(d) Check if the manual (SOS) switch green indicator comes on.

OK:

Manual (SOS) switch green indicator illuminates.

REPLACE MAP LIGHT SUB-ASSEMBLY (MANUAL [SOS] SWITCH)

3.	CHECK HARNESS AND CONNECTOR (DCM [TELEPHONE TRANSCEIVER ASSEMBLY] - MAP LIGHT SUB-ASSEMBLY (MANUAL [SOS] SWITCH))

(a) Disconnect the G131 DCM (telephone transceiver assembly) connector.

(b) Disconnect the P20*1 or P14*2 map light sub-assembly (manual [SOS] switch) connector.

*1: for TMC Made
*2: for TMMC Made

Standard Resistance:

for TMC Made

Tester Connection	Condition	Specified Condition
G131-22 (IND2) - P20-23 (IND2)	Always	Below 1 Ω
G131-22 (IND2) or P20-23 (IND2) - Body ground	Always	10 kΩ or higher
G131-3 (SIG-) - P20-14 (GND3)	Always	Below 1 Ω
G131-3 (SIG-) or P20-14 (GND3) - Body ground	Always	10 kΩ or higher

for TMMC Made

Tester Connection	Condition	Specified Condition
G131-22 (IND2) - P14-12 (IND2)	Always	Below 1 Ω
G131-22 (IND2) or P14-12 (IND2) - Body ground	Always	10 kΩ or higher
G131-3 (SIG-) - P14-10 (GND3)	Always	Below 1 Ω
G131-3 (SIG-) or P14-10 (GND3) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	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.

PERFORM DCM ACTIVATION