Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012VLS
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 06/2017]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15C5; Manual Button Malfunction; 2018 MY Camry [03/2017 - 06/2017]

DTC

B15C5

Manual Button Malfunction

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) detects an open or short circuit in the manual (SOS) switch.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15C5

Manual Button Malfunction

Open or short circuit in manual (SOS) switch is detected.

  • DCM (Telematics Transceiver)
  • Roof console box sub-assembly
  • Wire harness or connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Before performing this diagnostic procedure, make sure to perform Health Check and confirm that the DCM/VIN registration information is correct.

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: HEALTH CHECK

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.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Recheck for DTCs.

Body Electrical > Telematics > Trouble Codes

Result

Proceed to

DTC B1570, B1571 and B15C5 are output

A

DTC B15C5 is output

(DTC B1570 and B1571 are not output)

B

B

GO TO STEP 5

A

2.

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

(a) Disconnect the V14 roof console box sub-assembly connector.

*a

Component without harness connected

(Roof Console Box Sub-assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

24 (SIG1) - 16 (GND3)

Manual (SOS) switch not pressed

410 to 414 Ω

24 (SIG1) - 16 (GND3)

Manual (SOS) switch pressed

81 to 83 Ω

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY

OK

3.

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

(a) Disconnect the K12 DCM (Telematics Transceiver) connector.

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K12-26 (SIG-) - V14-16 (GND3)

Always

Below 1 Ω

K12-26 (SIG-) or V14-16 (GND3) - Body ground

Always

10 kΩ or higher

K12-27 (SIG1) - V14-24 (SIG1)

Always

Below 1 Ω

K12-27 (SIG1) or V14-24 (SIG1) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The engine switch must be off.
  • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

5.

READ VALUE USING TECHSTREAM (MANUAL (SOS) SWITCH OPERATION)

(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.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Telematics / Data List.

(f) Check that the manual (SOS) switch condition observed on the Techstream changes according to manual (SOS) switch operation.

Body Electrical > Telematics > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Emergency Switch

Manual (SOS) switch

OFF or ON

OFF: Manual (SOS) switch not pressed

ON: Manual (SOS) switch pressed*

-

Body Electrical > Telematics > Data List

Tester Display

Emergency Switch

  • *: Pressing the manual (SOS) switch will connect to the call center.

Result

Proceed to

Techstream display changes when turning the manual (SOS) switch ON/OFF

A

Techstream display does not change when turning the manual (SOS) switch ON/OFF

B

B

GO TO STEP 7

A

6.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The engine switch must be off.
  • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

7.

INSPECT DCM (TELEMATICS TRANSCEIVER) (SIG1 VOLTAGE)

(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors.

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

*a

Component with harness connected

(DCM (Telematics Transceiver))

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

K12-27 (SIG1) - K12-26 (SIG-)

Engine switch on (IG), manual (SOS) switch not pressed

1.5 to 2.0 V

NG

GO TO STEP 9

OK

8.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The engine switch must be off.
  • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

9.

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

(a) Disconnect the V14 roof console box sub-assembly connector.

*a

Component without harness connected

(Roof Console Box Sub-assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

24 (SIG1) - 16 (GND3)

Manual (SOS) switch not pressed

410 to 414 Ω

24 (SIG1) - 16 (GND3)

Manual (SOS) switch pressed

81 to 83 Ω

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY

OK

10.

CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAP LIGHT ASSEMBLY)

(a) Disconnect the K12 DCM (Telematics Transceiver) connector.

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K12-27 (SIG1) - V14-24 (SIG1)

Always

Below 1 Ω

K12-27 (SIG1) or V14-24 (SIG1) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

11.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The engine switch must be off.
  • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION