| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001JR3K |
| Model Year Start: 2020 | Model: Avalon | Prod Date Range: [08/2019 - 08/2020] |
| Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): B15C3; Speaker Output Short; 2020 MY Avalon [08/2019 - 08/2020] | ||
|
DTC |
B15C3 |
Speaker Output Short |
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 |
|
- *: w/ Manual (SOS) Switch
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.
Click here
![2019 - 2021 MY Avalon [04/2018 - 08/2021]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): PRECAUTION](/t3Portal/stylegraphics/info.gif)
-
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.
-
Before replacing the DCM (telematics transceiver), refer to Registration.
Click here
PROCEDURE
|
1. |
CHECK MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
w/ Manual (SOS) Switch |
A |
|
w/o Manual (SOS) Switch |
B |
| B |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY, DCM (TELEMATICS TRANSCEIVER) OR SPEAKERS - BODY GROUND) |
(a) Disconnect the G10 stereo component amplifier assembly connector.
(b) Disconnect the G9 DCM (telematics transceiver) connector.
(c) Disconnect the G70 and G71 front No. 2 speaker assembly connectors.
(d) Disconnect the G72 front No. 4 speaker assembly connector.
(e) Disconnect the G79 front No. 3 speaker assembly LH connector.
(f) Disconnect the J3 and J4 rear No. 2 speaker assembly connectors.
(g) Disconnect the K2 and K3 speaker assembly with bracket connectors.
(h) Disconnect the K1 rear No. 3 speaker assembly connector.
(i) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G10-9 (TWR+) or G70-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-24 (TWR-) or G70-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-8 (TWL+) or G71-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-23 (TWL-) or G71-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-13 (FR+) or G9-2 (SPI+) - Body ground |
Always |
10 kΩ or higher |
|
G10-28 (FR-) or G9-3 (SPI-) - Body ground |
Always |
10 kΩ or higher |
|
G10-12 (FL+) or G79-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-27 (FL-) or G79-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-15 (RR+) or J3-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-30 (RR-) or J3-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-14 (RL+) or J4-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-29 (RL-) or J4-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-6 (WF1+) or K1-4 (WF1+) - Body ground |
Always |
10 kΩ or higher |
|
G10-21 (WF1-) or K1-3 (WF1-) - Body ground |
Always |
10 kΩ or higher |
|
G10-5 (WF2+) or K1-2 (WF2+) - Body ground |
Always |
10 kΩ or higher |
|
G10-20 (WF2-) or K1-1 (WF2-) - Body ground |
Always |
10 kΩ or higher |
|
G10-7 (CTR+) or G72-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-22 (CTR-) or G72-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-11 (SR+) or K2-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-26 (SR-) or K2-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-10 (SL+) or K3-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-25 (SL-) or K3-1 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) OR SPEAKER - BODY GROUND) |
(a) Disconnect the G9 DCM (telematics transceiver) connector.
(b) Disconnect the G78 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 |
|---|---|---|
|
G9-5 (SPO+) or G78-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G9-6 (SPO-) or G78-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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:
|
|
| OK |
|
| NG |
|
|
5. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY OR SPEAKERS - BODY GROUND) |
(a) Disconnect the G10 stereo component amplifier assembly connector.
(b) Disconnect the G78 and G79 front No. 3 speaker assembly connectors.
(c) Disconnect the G70 and G71 front No. 2 speaker assembly connectors.
(d) Disconnect the J3 and J4 rear No. 2 speaker assembly connectors.
(e) Disconnect the K2 and K3 speaker assembly with bracket connectors.
(f) Disconnect the K1 rear No. 3 speaker assembly connector.
(g) Disconnect the G72 front No. 4 speaker assembly connector.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G10-13 (FR+) or G78-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-28 (FR-) or G78-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-12 (FL+) or G79-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-27 (FL-) or G79-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-9 (TWR+) or G70-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-24 (TWR-) or G70-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-8 (TWL+) or G71-2 - Body ground |
Always |
10 kΩ or higher |
|
G10-23 (TWL-) or G71-1 - Body ground |
Always |
10 kΩ or higher |
|
G10-15 (RR+) or J3-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-30 (RR-) or J3-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-14 (RL+) or J4-4 (+TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-29 (RL-) or J4-2 (-TW) - Body ground |
Always |
10 kΩ or higher |
|
G10-6 (WF1+) or K1-4 (WF1+) - Body ground |
Always |
10 kΩ or higher |
|
G10-21 (WF1-) or K1-3 (WF1-) - Body ground |
Always |
10 kΩ or higher |
|
G10-5 (WF2+) or K1-2 (WF2+) - Body ground |
Always |
10 kΩ or higher |
|
G10-20 (WF2-) or K1-1 (WF2-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER ASSEMBLY OR FRONT NO. 3 SPEAKER ASSEMBLY - BODY GROUND) |
(a) Disconnect the I1 and I15 front No. 1 speaker assembly connectors.
(b) Disconnect the G78 and G79 front No. 3 speaker assembly connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I1-2 or G78-3 (+) - Body ground |
Always |
10 kΩ or higher |
|
I1-1 or G78-1 (-) - Body ground |
Always |
10 kΩ or higher |
|
I15-2 or G79-3 (+) - Body ground |
Always |
10 kΩ or higher |
|
I15-1 or G79-1 (-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
CHECK HARNESS AND CONNECTOR (REAR SPEAKER ASSEMBLY OR REAR NO. 2 SPEAKER ASSEMBLY - BODY GROUND) |
(a) Disconnect the J3 and J4 rear No. 2 speaker assembly connectors.
(b) Disconnect the J11 and J12 rear speaker assembly connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
J11-2 or J3-3 (+) - Body ground |
Always |
10 kΩ or higher |
|
J11-1 or J3-1 (-) - Body ground |
Always |
10 kΩ or higher |
|
J12-2 or J4-3 (+) - Body ground |
Always |
10 kΩ or higher |
|
J12-1 or J4-1 (-) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. |
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 |
|
|
|
9. |
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
| NG |
|
|
|
10. |
INSPECT FRONT NO. 4 SPEAKER ASSEMBLY |
(a) Remove the front No. 4 speaker assembly.
Click here
(b) Inspect the front No. 4 speaker assembly.
Click here
| NG |
|
|
|
11. |
INSPECT REAR SPEAKER ASSEMBLY |
(a) Remove the rear speaker assembly.
Click here
(b) Inspect the rear speaker assembly.
Click here
| NG |
|
|
|
12. |
INSPECT REAR NO. 3 SPEAKER ASSEMBLY |
(a) Remove the rear No. 3 speaker assembly.
Click here
(b) Inspect the rear No. 3 speaker assembly.
Click here
| NG |
|
|
|
13. |
INSPECT SPEAKER ASSEMBLY WITH BRACKET |
(a) Remove the speaker assembly with bracket.
Click here
(b) Inspect the speaker assembly with bracket.
Click here
| NG |
|
|
|
14. |
REPLACE FRONT NO. 3 SPEAKER ASSEMBLY |
(a) Remove the front No. 3 speaker assembly.
Click here
(b) Inspect the front No. 3 speaker assembly.
Click here
(c) Clear the DTCs.
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 |
|
|
15. |
REPLACE REAR NO. 2 SPEAKER ASSEMBLY |
(a) Remove the rear No. 2 speaker assembly.
Click here
(b) Inspect the rear No. 2 speaker assembly.
Click here
(c) Clear the DTCs.
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 |
|
|
|