Toyota Tacoma 2015-2018 Service Manual: 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. |
|
WIRING DIAGRAM
.png)
PROCEDURE
|
1. |
CHECK VEHICLE CONDITION |
(a) Check vehicle condition.
Result|
Result |
Proceed to |
|---|---|
|
w/ Stereo Component Amplifier |
A |
|
w/o Stereo Component Amplifier |
B |
| B | .gif) |
GO TO STEP 7 |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - BODY GROUND) |
(a) Disconnect the S24 and S31 stereo component amplifier assembly connectors.
(b) Disconnect the S15 and S16 front No. 1 speaker assembly connectors.
(c) Disconnect the S48 and S49 front No. 2 speaker assembly connectors.
(d) Disconnect the S17 and S18 rear speaker assembly connectors.
(e) Disconnect the S21 No. 1 speaker assembly with box connector.
(f) Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S24-2 (FL+) - Body ground |
Always |
10 kΩ or higher |
|
S24-1 (FL-) - Body ground |
Always |
10 kΩ or higher |
|
S24-9 (FR+) - Body ground |
Always |
10 kΩ or higher |
|
S24-3 (FR-) - Body ground |
Always |
10 kΩ or higher |
|
S31-8 (TWL+) - Body ground |
Always |
10 kΩ or higher |
|
S31-7 (TWL-) - Body ground |
Always |
10 kΩ or higher |
|
S31-2 (TWR+) - Body ground |
Always |
10 kΩ or higher |
|
S31-6 (TWR-) - Body ground |
Always |
10 kΩ or higher |
|
S31-3 (RL+) - Body ground |
Always |
10 kΩ or higher |
|
S31-9 (RL-) - Body ground |
Always |
10 kΩ or higher |
|
S31-10 (RR+) - Body ground |
Always |
10 kΩ or higher |
|
S31-4 (RR-) - Body ground |
Always |
10 kΩ or higher |
|
S24-5 (WFL+) - Body ground |
Always |
10 kΩ or higher |
|
S24-12 (WFL-) - Body ground |
Always |
10 kΩ or higher |
|
S24-4 (WFR+) - Body ground |
Always |
10 kΩ or higher |
|
S24-10 (WFR-) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
|
(a) Remove 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 4.8Ω |
|
*a |
Component without harness connected (Front No. 1 Speaker Assembly) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
(a) Remove 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 |
|---|---|---|
|
1 - 2 |
Always |
1.5 to 2.5 Ω |
|
*a |
Component without harness connected (Front No. 2 Speaker Assembly) |
| NG | |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY |
|
|
5. |
INSPECT REAR SPEAKER ASSEMBLY |
|
(a) Disconnect the S17 and S18 rear speaker assembly connectors. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Always |
4 Ω |
|
*a |
Component without harness connected (Rear Speaker Assembly) |
| NG | |
REPLACE REAR SPEAKER ASSEMBLY |
|
|
6. |
INSPECT NO. 1 SPEAKER ASSEMBLY WITH BOX |
|
(a) Disconnect the S21 No. 1 speaker assembly with box connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 (WF+) - 4 (WF-) |
Always |
1.6 to 2.4 Ω |
|
1 (WF+) - 3 (WF-) |
Always |
1.6 to 2.4 Ω |
|
*a |
Component without harness connected (No. 1 Speaker Assembly with Box) |
| OK | |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
| NG | |
REPLACE NO. 1 SPEAKER ASSEMBLY WITH BOX |
|
7. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BODY GROUND) |
(a) Disconnect the N23 and N24 navigation receiver assembly connectors.
(b) Disconnect the S46 and S47 front No. 2 speaker assembly connectors.
(c) Disconnect the S17 and S18 rear speaker assembly connectors.
(d) Measure the resistance between the navigation receiver assembly to check for a short circuit in the wire harness.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N24-1 (FR+) - Body ground |
Always |
10 kΩ or higher |
|
N24-5 (FR-) - Body ground |
Always |
10 kΩ or higher |
|
N24-2 (FL+) - Body ground |
Always |
10 kΩ or higher |
|
N24-6 (FL-) - Body ground |
Always |
10 kΩ or higher |
|
N23-1 (RR+) - Body ground |
Always |
10 kΩ or higher |
|
N23-3 (RR-) - Body ground |
Always |
10 kΩ or higher |
|
N23-2 (RL+) - Body ground |
Always |
10 kΩ or higher |
|
N23-6 (RL-) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. |
CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - BODY GROUND) |
(a) Disconnect the S15 and S16 front No. 1 speaker assembly connectors.
(b) Disconnect the S46 and S47 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 |
|---|---|---|
|
S47-1 (+) - Body ground |
Always |
10 kΩ or higher |
|
S47-3 (-) - Body ground |
Always |
10 kΩ or higher |
|
S46-1 (+) - Body ground |
Always |
10 kΩ or higher |
|
S46-3 (-) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
|
(a) Remove 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 |
|
*a |
Component without harness connected (Front No. 1 Speaker Assembly) |
| NG | |
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY |
|
|
10. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
|
(a) Remove 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 |
|---|---|---|
|
2 (+) - 4(-) |
Always |
10 kΩ or higher |
|
2 (+) - 1(+) |
Always |
Below 1 Ω |
|
4 (-) - 3(-) |
Always |
Below 1 Ω |
|
*a |
Component without harness connected (Front No. 2 Speaker Assembly) |
| NG | |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY |
|
|
11. |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY |
(a) Replace the front No. 2 speaker assembly with a new or known good one (See
page .gif)
).
(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 |
|
|
12. |
INSPECT REAR SPEAKER ASSEMBLY |
|
(a) Remove 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 |
4 Ω |
|
*a |
Component without harness connected (Rear Speaker Assembly) |
| OK | |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
| NG | |
REPLACE REAR SPEAKER ASSEMBLY |
XM Tuner Antenna Disconnected (B15FE,B15FF)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the antenna assembly with
holder which is connected to the navigation receiver assembly assembly.
DTC No.
DTC D ...
Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
DTC Code
DTC Detection Condition
Trouble Area
U0073
...
Other materials:
Installation
INSTALLATION
PROCEDURE
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(a) Install the vane pump assembly with the 2 bolts.
Torque:
21 N·m {214 kgf·cm, 15 ft·lbf}
(b) Connect the oil pressure switch connector.
NOTICE:
Make sure that no oil adheres to the connector.
...
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
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Rear Occupant Classification Sensor LH Collision Detection (B1787)
DESCRIPTION
DTC B1787 is set when the occupant detection ECU receives a collision detection
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occurs.
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