NAVIGATION SYSTEM(for Sedan), Diagnostic DTC:B15C3
| DTC Code | DTC Name |
|---|---|
| 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 |
|
WIRING DIAGRAM
PROCEDURE
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BODY GROUND)
Disconnect the E1 and E2 radio and display receiver assembly connectors.
Disconnect the G4 and H5 front No. 2 speaker assembly connectors.
Disconnect the L79 and L80 rear speaker assembly connectors.
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
E1-1 (FR+) - Body ground
Always
10 kΩ or higher
E1-5 (FR-) - Body ground
Always
10 kΩ or higher
E1-2 (FL+) - Body ground
Always
10 kΩ or higher
E1-6 (FL-) - Body ground
Always
10 kΩ or higher
E2-1 (RR+) - Body ground
Always
10 kΩ or higher
E2-3 (RR-) - Body ground
Always
10 kΩ or higher
E2-2 (RL+) - Body ground
Always
10 kΩ or higher
E2-6 (RL-) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER ASSEMBLY - BODY GROUND)
Disconnect the G1 and H1 front No. 1 speaker assembly connectors.
Disconnect the G4 and H5 front No. 2 speaker assembly connectors.
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
G4-3 (+) - Body ground
Always
10 kΩ or higher
G4-1 (-) - Body ground
Always
10 kΩ or higher
H5-3 (+) - Body ground
Always
10 kΩ or higher
H5-1 (-) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY
Remove the front No. 1 speaker assembly.
-
*a
Component without harness connected
(Front No. 1 Speaker Assembly)
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
Result
Proceed to
OK
NG
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
Remove the front No. 2 speaker assembly.
-
*A
for RH
*B
for LH
*a
Component without harness connected
(Front No. 2 Speaker Assembly)
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
3 (+) - 4 (TWL+)
Always
Below 1 Ω
1 (-) - 2 (TWL-)
Always
Below 1 Ω
Result
Proceed to
OK
NG
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY
Replace the front No. 2 speaker assembly.
Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
OK
No DTCs are output.
Tip: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 LH and RH sides.
Result
Proceed to
OK
NG
OK END
INSPECT REAR SPEAKER ASSEMBLY
Remove the rear speaker assembly.
-
*a
Component without harness connected
(Rear Speaker Assembly)
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
Result
Proceed to
OK
NG