AUDIO AND VISUAL SYSTEM > Speaker Circuit |
for Preparation Click here
DESCRIPTION
The radio receiver sends sound signals to the speakers.WIRING DIAGRAM
INSPECTION PROCEDURE
1.CHECK SPEAKER |
Check that the speaker sounds.
Result Result Proceed to Front No. 1 speaker does not operate A Front No. 2 speaker does not operate B Rear No. 1 speaker does not operate C All speakers do not operate D
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A | |
2.CHECK FRONT NO. 2 SPEAKER ASSEMBLY |
Check that the front No. 2 speaker sounds.
- OK:
- Speaker sounds.
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OK | |
3.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
Disconnect the H6 or G7 receiver connector.
Measure the resistance of the speaker.
- Standard resistance:
Tester Connection Specified Condition 1 (-) - 2 (TWL-)*1 or (TWR-)*2 Below 1 Ω 3 (+) - 4 (TWL+)*1 or (TWR+)*2 Below 1 Ω 1 (-) - Body ground 10 kΩ or higher 3 (+) - Body ground 10 kΩ or higher
- HINT:
- *1: for LH
- *2: for RH
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OK | |
4.CHECK WIRE HARNESS (FRONT NO. 1 SPEAKER - FRONT NO. 2 SPEAKER) |
Disconnect the H1 and H6, or G1 and G7 connectors.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection Specified Condition H1-1 - H6-3 (+) Below 1 Ω H1-1 - Body ground 10 kΩ or higher H1-2 - H6-1 (-) Below 1 Ω H1-2 - Body ground 10 kΩ or higher G1-1 - G7-3 (+) Below 1 Ω G1-1 - Body ground 10 kΩ or higher G1-2 - G7-1 (-) Below 1 Ω G1-2 - Body ground 10 kΩ or higher
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OK | ||
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5.CHECK WIRE HARNESS (RADIO RECEIVER - FRONT NO. 2 SPEAKER) |
Disconnect the E90 receiver connector.
Disconnect the H6 or G7 speaker connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection Specified Condition E90-1 (FR+) - G7-4 (TWR+) Below 1 Ω E90-5 (FR-) - G7-2 (TWR-) Below 1 Ω E90-1 (FR+) - Body ground 10 kΩ or higher E90-5 (FR-) - Body ground 10 kΩ or higher E90-2 (FL+) - H6-4 (TWL+) Below 1 Ω E90-6 (FL-) - H6-2 (TWL-) Below 1 Ω E90-2 (FL+) - Body ground 10 kΩ or higher E90-6 (FL-) - Body ground 10 kΩ or higher
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OK | |
6.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
Check that the malfunction disappears when another speaker in good condition is installed.
- OK:
- Malfunction disappears.
- HINT:
- Connect all connectors to the speakers.
- 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.
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NG | ||
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7.CHECK WIRE HARNESS (RADIO RECEIVER - REAR NO. 1 SPEAKER) |
Disconnect the E91 receiver connector.
Disconnect the J2 or I2 receiver connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection Specified Condition E91-1 (RR+) - I2-1 Below 1 Ω E91-3 (RR-) - I2-2 Below 1 Ω E91-1 (RR+) - Body ground 10 kΩ or higher E91-3 (RR-) - Body ground 10 kΩ or higher E91-2 (RL+) - J2-1 Below 1 Ω E91-6 (RL-) - J2-2 Below 1 Ω E91-2 (RL+) - Body ground 10 kΩ or higher E91-6 (RL-) - Body ground 10 kΩ or higher
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OK | |
8.INSPECT REAR NO. 1 SPEAKER ASSEMBLY |
Check the rear No. 1 speaker (Click here).
- OK:
- Rear No. 1 speaker is normal.
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OK | ||
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