Toyota Venza manuals

Toyota Venza: Speaker Output Short (B15C3)

DESCRIPTION

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

DTC No.

DTC Detection Condition

Trouble Area

B15C3

A short is detected in the speaker output circuit

  • Harness or connector
  • Speaker
  • Radio and display receiver assembly

WIRING DIAGRAM


PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)

(a) Disconnect the E4 and E5 radio and display receiver assembly connectors.

(b) Disconnect the E28 and E29 front No. 2 speaker assembly connectors.

(c) Disconnect the J4 and K4 rear speaker assembly connectors.

(d) Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection

Condition

Specified Condition

E4-1 (FR+) - Body ground

Always

10 kΩ or higher

E4-5 (FR-) - Body ground

Always

10 kΩ or higher

E4-2 (FL+) - Body ground

Always

10 kΩ or higher

E4-6 (FL-) - Body ground

Always

10 kΩ or higher

E5-1 (RR+) - Body ground

Always

10 kΩ or higher

E5-3 (RR-) - Body ground

Always

10 kΩ or higher

E5-2 (RL+) - Body ground

Always

10 kΩ or higher

E5-6 (RL-) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

2.

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

(a) Disconnect the H1 and I1 front No. 1 speaker assembly connectors.

(b) Disconnect the E28 and E29 front No. 2 speaker assembly connectors.

(c) Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

Standard Resistance:

Tester Connection

Condition

Specified Condition

E28-1 (+) - Body ground

Always

10 kΩ or higher

E28-3 (-) - Body ground

Always

10 kΩ or higher

E29-1 (+) - Body ground

Always

10 kΩ or higher

E29-3 (-) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

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


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

Always

3.2 to 4.8 Ω

Text in Illustration

*a

Component without harness connected

(Front No. 1 Speaker Assembly)



NG

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY


OK

4.

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

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


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (TWR-) - 2(TWR+)

Always

10 kΩ or higher

3 (-) - 4(TWR-)

Always

Below 1 Ω

1 (+) - 2(TWR+)

Always

Below 1 Ω

4 (TWL-) - 2(TWL+)

Always

10 kΩ or higher

1 (+) - 4 (TWL-)

Always

Below 1 Ω

3 (-) - 2 (TWL+)

Always

Below 1 Ω

Text in Illustration

*A

for RH

*B

for LH

*a

Component without harness connected

(Front No. 2 Speaker Assembly)



NG

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY


OK

5.

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY

(a) Replace the front No. 2 speaker assembly with a new or known good one (See page ).


(b) Clear the DTCs (See page ).


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

OK:

No DTCs are output.

HINT:

  • Connect all the connectors to the front No. 2 speaker assemblies that were disconnected.
  • When there is a possibility that either the right or left front No. 2 speaker assembly is defective, inspect by interchanging the right one with the left one.
  • Perform the above inspection on both the LH and RH side.

OK

END


NG

6.

INSPECT REAR SPEAKER ASSEMBLY

(a) Remove the rear speaker assembly (See page ).


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

Always

3.2 to 4.8 Ω

Text in Illustration

*a

Component without harness connected

(Rear Speaker Assembly)



OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


NG

REPLACE REAR SPEAKER ASSEMBLY

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