Toyota CH-R Service Manual: Manual Button Malfunction (B15C5)

Toyota CH-R Service Manual / Cellular Communication / Safety Connect System / Manual Button Malfunction (B15C5)

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.	Mayday switch assembly (manual (SOS) switch) Map light assembly Wire harness or connector DCM (Telematics Transceiver)

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

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.

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

Result

Proceed to

DTC B1570, B1571 and B15C5 are output

DTC B15C5 is output

(DTC B1570 and B1571 are not output)

GO TO STEP 6

2.	INSPECT MAP LIGHT ASSEMBLY

(a) Disconnect the R4 map light assembly connector.

*a	Component without harness connected (Map Light Assembly)

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
8 (SIG1) - 1 (GND3)	Manual (SOS) switch not pressed	392 to 432 Ω
8 (SIG1) - 1 (GND3)	Manual (SOS) switch pressed	78 to 86 Ω

GO TO STEP 5

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

(a) Disconnect the F134 DCM (Telematics Transceiver) connector.

(b) Disconnect the R4 map light assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F134-26 (SIG-) - R4-1 (GND3)	Always	Below 1 Ω
F134-26 (SIG-) or R4-1 (GND3) - Body ground	Always	10 kΩ or higher
F134-27 (SIG1) - R4-8 (SIG1)	Always	Below 1 Ω
F134-27 (SIG1) or R4-8 (SIG1) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here

NOTICE:

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

PERFORM DCM ACTIVATION

5.	INSPECT MAYDAY SWITCH ASSEMBLY (MANUAL (SOS) SWITCH) (RED INDICATOR)

(a) Remove the mayday switch assembly (manual (SOS) switch).

Click here

(b) Inspect the mayday switch assembly (manual (SOS) switch).

Click here

REPLACE MAP LIGHT ASSEMBLY

REPLACE MAYDAY SWITCH ASSEMBLY (MANUAL (SOS) SWITCH)

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

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(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*	-

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

GO TO STEP 8

7.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here

NOTICE:

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

PERFORM DCM ACTIVATION

8.	INSPECT DCM (TELEMATICS TRANSCEIVER) (SIG1 VOLTAGE)

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

Click here

*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	Switch Condition	Specified Condition
F134-27 (SIG1) - F134-26 (SIG-)	Ignition switch ON manual (SOS) switch not pressed	1.5 to 2.0 V

GO TO STEP 10

9.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here

NOTICE:

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

PERFORM DCM ACTIVATION

10.	INSPECT MAP LIGHT ASSEMBLY

(a) Disconnect the R4 map light assembly connector.

*a	Component without harness connected (Map Light Assembly)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
8 (SIG1) - 1 (GND3)	Manual (SOS) switch not pressed	392 to 432 Ω
8 (SIG1) - 1 (GND3)	Manual (SOS) switch pressed	78 to 86 Ω

GO TO STEP 13

11.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - MAYDAY SWITCH ASSEMBLY (MANUAL (SOS) SWITCH))

(a) Disconnect the F134 DCM (Telematics Transceiver) connector.

(b) Disconnect the R4 map light assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F134-27 (SIG1) -R4-8 (SIG1)	Always	Below 1 Ω
F134-27 (SIG1) or R4-8 (SIG1) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here

NOTICE:

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

PERFORM DCM ACTIVATION

13.	INSPECT MAYDAY SWITCH ASSEMBLY (MANUAL (SOS) SWITCH) (RED INDICATOR)

(a) Remove the mayday switch assembly (manual (SOS) switch).

Click here

(b) Inspect the mayday switch assembly (manual (SOS) switch).

Click here

REPLACE MAP LIGHT ASSEMBLY

REPLACE MAYDAY SWITCH ASSEMBLY (MANUAL (SOS) SWITCH)

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