AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Speaker Circuit
| DTC Code | DTC Name |
|---|---|
| Speaker Circuit |
DESCRIPTION
The sound signals amplified by the radio receiver assembly are sent to the speakers from the radio receiver assembly via the speaker circuit.
If there is a short in a speaker circuit, the radio receiver assembly detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction in the radio receiver assembly or speakers.
WIRING DIAGRAM
PROCEDURE
CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)
*1: for RH Side
*2: for LH Side
*3: for 6 Speakers
Disconnect the G46 and G47 radio receiver assembly connectors.
Disconnect the I1*1 and/or J1*2 front No. 1 speaker assembly connector.
Disconnect the H1*1 and/or H3*2 front No. 2 speaker assembly connector.*3
Disconnect the K2*1 and/or L2*2 rear speaker assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
for 4 Speakers
Tester Connection
Condition
Specified Condition
G46-1 (FR+) - I1-1*1
Always
Below 1 Ω
G46-5 (FR-) - I1-2*1
Always
Below 1 Ω
G46-2 (FL+) - J1-1*2
Always
Below 1 Ω
G46-6 (FL-) - J1-2*2
Always
Below 1 Ω
G47-1 (RR+) - K2-1*1
Always
Below 1 Ω
G47-3 (RR-) - K2-2*1
Always
Below 1 Ω
G47-2 (RL+) - L2-1*2
Always
Below 1 Ω
G47-6 (RL-) - L2-2*2
Always
Below 1 Ω
G46-1 (FR+) - Body ground*1
Always
10 kΩ or higher
G46-5 (FR-) - Body ground*1
Always
10 kΩ or higher
G46-2 (FL+) - Body ground*2
Always
10 kΩ or higher
G46-6 (FL-) - Body ground*2
Always
10 kΩ or higher
G47-1 (RR+) - Body ground*1
Always
10 kΩ or higher
G47-3 (RR-) - Body ground*1
Always
10 kΩ or higher
G47-2 (RL+) - Body ground*2
Always
10 kΩ or higher
G47-6 (RL-) - Body ground*2
Always
10 kΩ or higher
for 6 Speakers
Tester Connection
Condition
Specified Condition
G46-1 (FR+) - H1-4 (TWR+)*1
Always
Below 1 Ω
G46-5 (FR-) - H1-2 (TWR-)*1
Always
Below 1 Ω
G46-2 (FL+) - H3-4 (TWL+)*2
Always
Below 1 Ω
G46-6 (FL-) - H3-2 (TWL-)*2
Always
Below 1 Ω
H1-3 (+) - I1-1*1
Always
Below 1 Ω
H1-1 (-) - I1-2*1
Always
Below 1 Ω
H3-3 (+) - J1-1*2
Always
Below 1 Ω
H3-1 (-) - J1-2*2
Always
Below 1 Ω
G47-1 (RR+) - K2-1*1
Always
Below 1 Ω
G47-3 (RR-) - K2-2*1
Always
Below 1 Ω
G47-2 (RL+) - L2-1*2
Always
Below 1 Ω
G47-6 (RL-) - L2-2*2
Always
Below 1 Ω
G46-1 (FR+) - Body ground*1
Always
10 kΩ or higher
G46-5 (FR-) - Body ground*1
Always
10 kΩ or higher
G46-2 (FL+) - Body ground*2
Always
10 kΩ or higher
G46-6 (FL-) - Body ground*2
Always
10 kΩ or higher
G47-1 (RR+) - Body ground*1
Always
10 kΩ or higher
G47-3 (RR-) - Body ground*1
Always
10 kΩ or higher
G47-2 (RL+) - Body ground*2
Always
10 kΩ or higher
G47-6 (RL-) - Body ground*2
Always
10 kΩ or higher
H1-3 (+) - Body ground*1
Always
10 kΩ or higher
H1-1 (-) - Body ground*1
Always
10 kΩ or higher
H3-3 (+) - Body ground*2
Always
10 kΩ or higher
H3-1 (-) - Body ground*2
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY
*1: for RH Side
*2: for LH Side
Disconnect the I1*1 and/or J1*2 front No. 1 speaker assembly connector.
Inspect the front No. 1 speaker assembly.
Result
Proceed to
OK (for 4 Speakers)
OK (for 6 Speakers)
NG
OK (for 4 Speakers) INSPECT REAR SPEAKER ASSEMBLYClick here
CHECK FRONT NO. 2 SPEAKER ASSEMBLY
Replace the front No. 2 speaker assembly.
Check the malfunction disappears.
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 speaker 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
Malfunction disappears
Malfunction appears
Malfunction disappears END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)
INSPECT REAR SPEAKER ASSEMBLY
*1: for RH Side
*2: for LH Side
Disconnect the K2*1 and/or L2*2 rear speaker assembly connector.
Inspect the rear speaker assembly.
Result
Proceed to
OK
NG