Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001L5FH
Model Year Start: 2020 Model: Camry Prod Date Range: [09/2019 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B157111,B157113; Indicator (Green) Circuit Short to Ground; 2020 - 2024 MY Camry [09/2019 -        ]

DTC

B157111

Indicator (Green) Circuit Short to Ground

DTC

B157113

Indicator (Green) Circuit Open

DESCRIPTION

This DTC is set when the DCM (telematics transceiver) 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 engine switch is turned on (IG).

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 engine switch is on (IG)
  • DCM (telematics transceiver)
  • Roof console box 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 engine switch is on (IG)
  • DCM (telematics transceiver)
  • Roof console box sub-assembly (manual (SOS) switch)
  • Harness or connector

WIRING DIAGRAM

w/ Sliding Roof
w/o Sliding Roof

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 MY Camry [09/2019 - 10/2020]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION 2021 - 2024 MY Camry [10/2020 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION

PROCEDURE

1.

CHECK DTC

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG) and wait for 10 seconds or more.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK 2020 MY Camry [09/2019 - 03/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [03/2020 - 10/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2021 MY Camry [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

NG

2.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

w/ Sliding Roof

A

w/o Sliding Roof

B
B

GO TO STEP 5

A

3.

INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH) (GREEN INDICATOR)

(a) Remove the roof console box sub-assembly (manual (SOS) switch).

Click here 2018 - 2024 MY Camry [06/2017 -        ]; LIGHTING (INT): PERSONAL LIGHT: REMOVAL

*a

Component without harness connected

(Roof Console Box Sub-assembly (Manual (SOS) Switch))

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

(c) Connect a positive (+) lead from batteries to terminal 11 (IND2) and a negative (-) lead to terminal 16 (GND3) of the roof console box sub-assembly (manual (SOS) switch) connector.

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

OK:

Manual (SOS) switch green indicator illuminates.

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

OK

4.

CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH))

(a) Disconnect the K140 DCM (telematics transceiver) connector.

(b) Disconnect the V14 roof console box sub-assembly (manual (SOS) switch) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K140-22 (IND2) - V14-11 (IND2)

Always

Below 1 Ω

K140-22 (IND2) or V14-11 (IND2) - Body ground

Always

10 kΩ or higher

K140-3 (SIG-) - V14-16 (GND3)

Always

Below 1 Ω

K140-3 (SIG-) or V14-16 (GND3) - Body ground

Always

10 kΩ or higher
OK

GO TO STEP 7

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.

INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH) (GREEN INDICATOR)

(a) Remove the roof console box sub-assembly (manual (SOS) switch).

Click here 2018 - 2024 MY Camry [06/2017 -        ]; LIGHTING (INT): PERSONAL LIGHT: REMOVAL

*a

Component without harness connected

(Roof Console Box Sub-assembly (Manual (SOS) Switch))

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

(c) Connect a positive (+) lead from batteries to terminal 8 (IND2) and a negative (-) lead to terminal 12 (GND3) of the roof console box sub-assembly (manual (SOS) switch) connector.

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

OK:

Manual (SOS) switch green indicator illuminates.

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

OK

6.

CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH))

(a) Disconnect the K140 DCM (telematics transceiver) connector.

(b) Disconnect the V18 roof console box sub-assembly (manual (SOS) switch) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K140-22 (IND2) - V18-8 (IND2)

Always

Below 1 Ω

K140-22 (IND2) or V18-8 (IND2) - Body ground

Always

10 kΩ or higher

K140-3 (SIG-) - V18-12 (GND3)

Always

Below 1 Ω

K140-3 (SIG-) or V18-12 (GND3) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

7.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here 2020 MY Camry [09/2019 - 10/2020]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The engine switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION