Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Front Right Speaker Cable Actuator Stuck (B1ACA71)

Toyota Corolla Cross (2022-2024) Service Manual / Audio & Visual & Telematics / Audio / Video / Audio And Visual System / Front Right Speaker Cable Actuator Stuck (B1ACA71)

DESCRIPTION

This DTC is stored when the stereo component amplifier assembly detects an open in the front speaker RH circuit by energizing the speaker line.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

Priority

B1ACA71

Front Right Speaker Cable Actuator Stuck

Open in the front speaker RH circuit is detected.

(1 trip detection logic)
  • Harness or connector
  • Stereo component amplifier assembly
  • Front No. 1 speaker assembly RH
  • Front No. 2 speaker assembly RH
  • Front No. 3 speaker assembly RH
  • Telematics transceiver

Navigation System

A

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the telematics transceiver, make sure to replace it with a new one.
  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed.

    Click here

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY RH, TELEMATICS TRANSCEIVER)

(a) Disconnect the I233 stereo component amplifier assembly connector.

(b) Disconnect the I76 front No. 3 speaker assembly RH connector.

(c) Disconnect the I201 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I233-15 (FR+) - I76-4 (+TW)

Always

Below 1 Ω

I233-14 (TWR+) - I201-1 (SPI+)

Always

Below 1 Ω

I233-30 (FR-) - I76-2 (-TW)

Always

Below 1 Ω

I233-29 (TWR-) - I201-2 (SPI-)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

2.

CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER ASSEMBLY RH - FRONT NO. 3 SPEAKER ASSEMBLY RH)

(a) Disconnect the K1 front No. 1 speaker assembly RH connector.

(b) Disconnect the I76 front No. 3 speaker assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K1-2 (+) - I76-3 (+)

Always

Below 1 Ω

K1-1 (-) - I76-1 (-)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

3.

CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY RH - TELEMATICS TRANSCEIVER)

(a) Disconnect the I237 front No. 2 speaker assembly RH connector.

(b) Disconnect the I201 telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I237-2 (TWR+) - I201-3 (SPO+)

Always

Below 1 Ω

I237-1 (TWR-) - I201-4 (SPO-)

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

4.

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY RH

Click here

NG

REPLACE FRONT NO. 1 SPEAKER ASSEMBLY RH

OK

5.

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY RH

Click here

NG

REPLACE FRONT NO. 2 SPEAKER ASSEMBLY RH

OK

6.

INSPECT FRONT NO. 3 SPEAKER ASSEMBLY RH

Click here

NG

REPLACE FRONT NO. 3 SPEAKER ASSEMBLY RH

OK

7.

INSPECT TELEMATICS TRANSCEIVER

(a) Disconnect the telematics transceiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (SPI+) - 3 (SPO+)

Always

Below 1 Ω

2 (SPI-) - 4 (SPO-)

Always

Below 1 Ω

1 (SPI+) - 2 (SPI-)

Always

10 kΩ or higher

3 (SPO+) - 4 (SPO-)

Always

10 kΩ or higher

*a

Component without harness connected

(Telematics Transceiver)
OK

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY

NG

REPLACE TELEMATICS TRANSCEIVER

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