DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK DTC
CHECK DTC
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY
INSPECT FRONT NO. 4 SPEAKER ASSEMBLY
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)
INSPECT REAR SPEAKER SET
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
INSPECT FRONT NO. 3 SPEAKER ASSEMBLY
CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER)
DTC 74-40 Short in Speaker Circuit
DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
| 74-40 | Short is detected in the speaker output circuit. | Harness or connector
Speaker
Stereo component amplifier assembly
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WIRING DIAGRAM
INSPECTION PROCEDURE
- After the inspection is completed, clear the DTCs.
Disconnect the F3 and F52 amplifier connectors.
Check if DTC 74-40 is output.
- OK:
- DTC 74-40 is not output.
| | REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()
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Reconnect the F52 amplifier connector.
Check if DTC 74-40 is output.
- OK:
- DTC 74-40 is not output.
| 3.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER) |
Disconnect the F3 amplifier connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F3-8 (CTR+) - Body ground | Always | 10 kΩ or higher |
| F3-7 (CTR-) - Body ground | Always | 10 kΩ or higher |
| F3-1 (WFL+) - Body ground | Always | 10 kΩ or higher |
| F3-5 (WFL-) - Body ground | Always | 10 kΩ or higher |
| F3-2 (WFR+) - Body ground | Always | 10 kΩ or higher |
| F3-6 (WFR-) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 4.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
Disconnect the I10 and I1 speaker connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 1 - 2 | Always | 3 Ω |
Text in Illustration| *1 | Component without harness connected
(Front No. 1 Speaker) |
| | REPLACE FRONT NO. 1 SPEAKER ASSEMBLY ()
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| 5.INSPECT FRONT NO. 4 SPEAKER ASSEMBLY |
Disconnect the F6 speaker connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 1 - 2 | Always | 6 Ω |
Text in Illustration| *1 | Component without harness connected
(Front No. 4 Speaker) |
| | REPLACE FRONT NO. 4 SPEAKER ASSEMBLY ()
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| OK | |
| |
| REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()
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| 6.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER) |
Disconnect the F52 amplifier connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F52-8 (FL-) - Body ground | Always | 10 kΩ or higher |
| F52-3 (FL+) - Body ground | Always | 10 kΩ or higher |
| F52-9 (FR-) - Body ground | Always | 10 kΩ or higher |
| F52-10 (FR+) - Body ground | Always | 10 kΩ or higher |
| F52-5 (RR+) - Body ground | Always | 10 kΩ or higher |
| F52-12 (RR-) - Body ground | Always | 10 kΩ or higher |
| F52-4 (RL+) - Body ground | Always | 10 kΩ or higher |
| F52-11 (RL-) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 7.INSPECT REAR SPEAKER SET |
Disconnect the J17 and J15 speaker connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 1 - 2 | Always | 4 Ω |
Text in Illustration| *1 | Component without harness connected
(Rear Speaker Set) |
| | REPLACE REAR SPEAKER SET ()
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| 8.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
Disconnect the F8 and F7 speaker connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 1 - 2 | Always | Below 1 Ω |
| 3 - 4 | Always | Below 1 Ω |
| 2 - 4 | Always | 4 Ω |
Text in Illustration| *1 | Component without harness connected
(Front No. 2 Speaker) |
| | REPLACE FRONT NO. 2 SPEAKER ASSEMBLY ()
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| 9.INSPECT FRONT NO. 3 SPEAKER ASSEMBLY |
Disconnect the F14 and F13 speaker connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 1 - 2 | Always | 4 Ω |
Text in Illustration| *1 | Component without harness connected
(Front No. 3 Speaker) |
| | REPLACE FRONT NO. 3 SPEAKER ASSEMBLY ()
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| 10.CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER) |
Disconnect the F8, F7, F14 and F13 speaker connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
- for LH:
| Tester Connection | Condition | Specified Condition |
| F8-2 (TWL+) - F14-1 | Always | Below 1 Ω |
| F8-4 (TWL-) - F14-2 |
| F8-2 (TWL+) - Body ground | Always | 10 kΩ or higher |
| F8-4 (TWL-) - Body ground |
- for RH:
| Tester Connection | Condition | Specified Condition |
| F7-2 (TWR+) - F13-1 | Always | Below 1 Ω |
| F7-4 (TWR-) - F13-2 |
| F7-2 (TWR+) - Body ground | Always | 10 kΩ or higher |
| F7-4 (TWR-) - Body ground |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
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| REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()
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