Toyota CH-R Service Manual: 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

B

GO TO STEP 5

A

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.

(c) Disconnect the F86 front No. 2 speaker assembly LH 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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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.

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

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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))

OK

GO TO STEP 6

NG

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.

(c) Disconnect the K4 and L4 rear 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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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.

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

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

NG

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY

OK

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

(c) Clear the DTCs.

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.

OK

END

NG

9.

INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly.

Click here

(b) Inspect the rear speaker assembly.

Click here

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE REAR SPEAKER ASSEMBLY

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