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

Toyota CH-R Service Manual / Navigation / Multi Info Display / Navigation System / 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)

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 Navigation System.
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When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.

PROCEDURE

1.	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 connector.

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

2.	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

3.	INSPECT DCM (TELEMATICS TRANSCEIVER)

(a) Remove the DCM (telematics transceiver).

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(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))

REPLACE DCM (TELEMATICS TRANSCEIVER)

4.	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

5.	INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

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

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

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REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

6.	INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

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

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

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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

7.	INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly.

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(b) Inspect the rear speaker assembly.

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REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE REAR SPEAKER ASSEMBLY

Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198)

DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area ...

Telematics Transceiver Disconnected (B15DB)

DESCRIPTION If the radio and display receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the engine switch is turned on (ACC) and the ...

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

Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198)

Telematics Transceiver Disconnected (B15DB)

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