Toyota CH-R Service Manual: Speaker Output Short (B15C3)

Toyota CH-R Service Manual / Audio / Video / Audio And Visual System(for Radio And Display Type) / Speaker Output Short (B15C3)

DESCRIPTION

This DTC is stored when a malfunction occurs in the speakers.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15C3	Speaker Output Short	A short is detected in the speaker output circuit	Harness or connector Speaker DCM (Telematics transceiver)*1

*1: w/ Manual (SOS) Switch

WIRING DIAGRAM

PROCEDURE

1.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/ Manual (SOS) Switch	A
w/o Manual (SOS) Switch	B

GO TO STEP 5

2.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY, DCM(TELEMATICS TRANSCEIVER) OR SPEAKERS - BODY GROUND)

(a) Disconnect the F132 radio and display receiver assembly connectors.

(b) Disconnect the F134 DCM (telematics transceiver) connector.

(d) Disconnect the K4 and L4 rear speaker assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F132-1 (FR+) or F134-2 (SPI+) - Body ground	Always	10 kΩ or higher
F132-6 (FR-) or F134-3 (SPI-) - Body ground	Always	10 kΩ or higher
F132-2 (FL+) or F86-4 (TWL+) - Body ground	Always	10 kΩ or higher
F132-7 (FL-) or F86-2 (TWL-) - Body ground	Always	10 kΩ or higher
F132-4 (RR+) or K4-1 - Body ground	Always	10 kΩ or higher
F132-9 (RR-) or K4-2 - Body ground	Always	10 kΩ or higher
F132-3 (RL+) or L4-1 - Body ground	Always	10 kΩ or higher
F132-8 (RL-) or L4-2 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY RH OR DCM (TELEMATICS TRANSCEIVER) - BODY GROUND)

(a) Disconnect the F85 front No. 2 speaker assembly RH connector.

(b) Disconnect the F134 DCM (telematics transceiver) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F85-4 (TWR+) or F134-5 (SPO+) - Body ground	Always	10 kΩ or higher
F85-2 (TWR-) or F134-6 (SPO-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Remove the DCM (telematics transceiver).

Click here

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
2 (SPI+) - 5 (SPO+)	Always	Below 1 Ω
3 (SPI-) - 6 (SPO-)	Always	Below 1 Ω
2 (SPI+) - 3 (SPI-)	Always	10 kΩ or higher
5 (SPO+) - 6 (SPO-)	Always	10 kΩ or higher
2 (SPI+) or 5 (SPO+) - Body ground	Always	10 kΩ or higher
3 (SPI-) or 6 (SPO-) - Body ground	Always	10 kΩ or higher

*a	Component without harness connected (DCM (Telematics Transceiver))

GO TO STEP 6

REPLACE DCM (TELEMATICS TRANSCEIVER)

5.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY OR SPEAKERS - BODY GROUND)

(a) Disconnect the F132 radio and display receiver assembly connectors.

(b) Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F132-1 (FR+) or F85-4 (TWR+) - Body ground	Always	10 kΩ or higher
F132-6 (FR-) or F85-2 (TWR-) - Body ground	Always	10 kΩ or higher
F132-2 (FL+) or F86-4 (TWL+) - Body ground	Always	10 kΩ or higher
F132-7 (FL-) or F86-2 (TWL-) - Body ground	Always	10 kΩ or higher
F132-4 (RR+) or K4-1 - Body ground	Always	10 kΩ or higher
F132-9 (RR-) or K4-2 - Body ground	Always	10 kΩ or higher
F132-3 (RL+) or L4-1 - Body ground	Always	10 kΩ or higher
F132-8 (RL-) or L4-2 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER ASSEMBLY OR FRONT NO. 2 SPEAKER ASSEMBLY - BODY GROUND)

(a) Disconnect the I1 and J1 front No. 1 speaker assembly connectors.

(b) Disconnect the F85 and F86 front No. 2 speaker assembly connectors.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F85-3 (+) or I1-1 - Body ground	Always	10 kΩ or higher
F85-1 (-) or I1-2 - Body ground	Always	10 kΩ or higher
F86-3 (+) or J1-1 - Body ground	Always	10 kΩ or higher
F86-1 (-) or J1-2 - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

(a) Remove the front No. 1 speaker assembly.

Click here

(b) Inspect the front No. 1 speaker assembly.

Click here

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

8.	INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

(a) Remove the front No. 2 speaker assembly.

Click here

(b) Inspect the front No. 2 speaker assembly.

Click here

Body Electrical > Navigation System > Clear DTCs

(d) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

END

9.	INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly.

Click here

(b) Inspect the rear speaker assembly.

Click here

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE REAR SPEAKER ASSEMBLY

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