NAVIGATION SYSTEM Speaker Circuit
| DTC Code | DTC Name |
|---|---|
| Speaker Circuit |
DESCRIPTION
The radio and display receiver assembly sends sound signals to the speakers.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections (Click here).
PROCEDURE
CHECK HARNESS AND CONNECTOR (SPEAKER CIRCUIT)
*1: for RH Side
*2: for LH Side
Disconnect the H107 and H108 radio and display receiver assembly connectors.
Disconnect the J12*1 and K12*2 front No. 1 speaker assembly connectors.
Disconnect the H41*1 and H42*2 front No. 2 speaker assembly connectors.
Disconnect the L5*1 and M5*2 rear speaker assembly connectors.
Measure the resistance between each of the radio and display receiver assembly and the front No. 2 speaker assembly to check for an open circuit in the wire harness.
Standard Resistance
Tester Connection
Condition
Specified Condition
H107-1 (FR+) - H41-4 (+)
Always
Below 1 Ω
H107-5 (FR-) - H41-2 (-)
Always
Below 1 Ω
H107-2 (FL+) - H42-4 (+)
Always
Below 1 Ω
H107-6 (FL-) - H42-2 (-)
Always
Below 1 Ω
Measure the resistance between each of the front No. 2 speaker assembly and front No. 1 speaker assembly to check for an open circuit in the wire harness.
Standard Resistance
Tester Connection
Condition
Specified Condition
H41-3 (TWR+) - J12-1
Always
Below 1 Ω
H41-1 (TWR-) - J12-2
Always
Below 1 Ω
H42-3 (TWL+) - K12-1
Always
Below 1 Ω
H42-1 (TWL-) - K12-2
Always
Below 1 Ω
Measure the resistance between each of the radio and display receiver assembly and the rear speaker assembly to check for an open circuit in the wire harness.
Standard Resistance
Tester Connection
Condition
Specified Condition
H108-1 (RR+) - L5-1
Always
Below 1 Ω
H108-3 (RR-) - L5-2
Always
Below 1 Ω
H108-2 (RL+) - M5-1
Always
Below 1 Ω
H108-6 (RL-) - M5-2
Always
Below 1 Ω
Measure the resistance between each speaker assembly and body ground to check for a short circuit in the wire harness.
Standard Resistance
Tester Connection
Condition
Specified Condition
J12-1 - Body ground
Always
10 kΩ or higher
J12-2 - Body ground
Always
10 kΩ or higher
K12-1 - Body ground
Always
10 kΩ or higher
K12-2 - Body ground
Always
10 kΩ or higher
H41-4 (+) - Body ground
Always
10 kΩ or higher
H41-2 (-) - Body ground
Always
10 kΩ or higher
H42-4 (+) - Body ground
Always
10 kΩ or higher
H42-2 (-) - Body ground
Always
10 kΩ or higher
L5-1 - Body ground
Always
10 kΩ or higher
L5-2 - Body ground
Always
10 kΩ or higher
M5-1 - Body ground
Always
10 kΩ or higher
M5-2 - Body ground
Always
10 kΩ or higher
REPAIR OR REPLACE HARNESS OR CONNECTOR
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY
Remove the front No. 1 speaker assembly (Click here).
Inspect the front No. 1 speaker assembly (Click here).
INSPECT REAR SPEAKER ASSEMBLY
Remove the rear speaker assembly (Click here).
Inspect the rear speaker assembly (Click here).
CHECK FRONT NO. 2 SPEAKER ASSEMBLY
Replace the front No. 2 speaker assembly with a known good one (Click here).
Check that the malfunction disappears.
Note:Connect all the connectors that were disconnected to the front No. 2 speaker assemblies.
Perform the above inspection on both LH and RH sides.
OK
Malfunction disappears.
END (FRONT NO. 2 SPEAKER ASSEMBLY IS DEFECTIVE)