| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026LIU |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type): B1ACA71; Front Right Speaker Cable Actuator Stuck; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] | ||
|
DTC |
B1ACA71 |
Front Right Speaker Cable Actuator Stuck |
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 Line Cable Actuator Stuck |
Open in the front speaker RH circuit is detected. (1 trip detection logic) |
|
Navigation System |
A |
WIRING DIAGRAM
FRONT NO. 1 SPEAKER ASSEMBLY RH and FRONT NO. 3 SPEAKER ASSEMBLY RH
FRONT NO. 2 SPEAKER ASSEMBLY RH
PROCEDURE
|
1. |
CHECK PROBLEM SYMPTOM |
(a) Confirm the problem symptoms and proceed to the respective link.
|
Result |
Proceed to |
|---|---|
|
No sound is output from the front No. 1 speaker assembly RH or front No. 3 speaker assembly RH |
A |
|
No sound is output from the front No. 2 speaker assembly RH |
B |
| B |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 3 SPEAKER ASSEMBLY RH) |
(a) Disconnect the I54 stereo component amplifier assembly connector.
(b) Disconnect the I74 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 |
|---|---|---|
|
I54-15 (FR+) - I74-4 (+TW) |
Always |
Below 1 Ω |
|
I54-30 (FR-) - I74-2 (-TW) |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER ASSEMBLY RH - FRONT NO. 3 SPEAKER ASSEMBLY RH) |
(a) Disconnect the I74 front No. 3 speaker assembly RH connector.
(b) Disconnect the K1 front No. 1 speaker assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I74-3 (+) - K1-2 |
Always |
Below 1 Ω |
|
I74-1 (-) - K1-1 |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY RH |
Click here
![2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - ]; AUDIO / VIDEO: FRONT DOOR SPEAKER: INSPECTION](/t3Portal/stylegraphics/info.gif)
| NG |
|
|
|
5. |
CHECK FOR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) In accordance with the display of the GTS, perform a speaker circuit energization inspection.
Click here
Body Electrical > Navigation System > Utility
|
Tester Display |
|---|
|
Speaker Line Electricity Check |
(c) Check for DTCs and proceed to the following step.
Body Electrical > Navigation System > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC B1ACA71 is output |
B |
| A |
|
END (FRONT NO. 1 SPEAKER ASSEMBLY RH IS DEFECTIVE) |
|
|
6. |
REPLACE FRONT NO. 3 SPEAKER ASSEMBLY RH |
(a) Replace the speaker assembly with a new or known good one.
Click here
|
|
7. |
CHECK FOR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) In accordance with the display of the GTS, perform a speaker circuit energization inspection.
Click here
Body Electrical > Navigation System > Utility
|
Tester Display |
|---|
|
Speaker Line Electricity Check |
(c) Check for DTCs and proceed to the following step.
Body Electrical > Navigation System > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC B1ACA71 is output |
B |
| A |
|
END (FRONT NO. 3 SPEAKER ASSEMBLY RH IS DEFECTIVE) |
| B |
|
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
|
|
8. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY RH) |
(a) Disconnect the I54 stereo component amplifier assembly connector.
(b) Disconnect the I6 front no. 2 speaker assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I54-14 (TWR+) - I6-2 |
Always |
Below 1 Ω |
|
I54-29 (TWR-) - I6-1 |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
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 |
| NG |
|
REPLACE DCM (TELEMATICS TRANSCEIVER)
|
|
|
10. |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY RH |
(a) Replace the speaker assembly with a new or known good one.
Click here
|
|
11. |
CHECK FOR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
(b) In accordance with the display of the GTS, perform a speaker circuit energization inspection.
Click here
Body Electrical > Navigation System > Utility
|
Tester Display |
|---|
|
Speaker Line Electricity Check |
(c) Check for DTCs and proceed to the following step.
Body Electrical > Navigation System > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC B1ACA71 is output |
B |
| A |
|
END (FRONT NO. 2 SPEAKER ASSEMBLY RH IS DEFECTIVE) |
| B |
|
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
|
|
|