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Fig. 52: Speaker Circuit Wiring Diagram (1 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Fig. 53: Speaker Circuit Wiring Diagram (2 Of 2)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSY -
SPEAKER ASSY)
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a. Disconnect the connectors from the stereo component amplifier assy S28, S30 and speakers.
b. Measure resistance between terminals of stereo component amplifier assy and speakers.
Standard: Below 1 ohms
c. Measure resistance between terminals of stereo component amplifier assy and body ground.
Fig. 54: Stereo Component Amplifier Assy
- Speaker Assy (Levinson Model)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Fig. 55: Stereo Component Amplifier Assy - Speaker Assy (Standard Model)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Fig. 56: Identifying Wiring Harness Connector Front No.1
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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Fig. 57: Identifying Wiring Harness Connector Front No.2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
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Fig. 58: Identifying Wiring Harness Connector Rear No.2
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK: Go to next step
2.INSPECT FRONT NO.1 SPEAKER ASSY
a. Resistance check.
1. Measure the resistance between the terminals of the speaker.
Standard:
Standard models: 2 ohms
Mark Levinson models: 8 ohms
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NG: REPLACE FRONT NO.1 SPEAKER ASSY (SEE REPLACEMENT )
OK: Go to next step
3.INSPECT FRONT NO.2 SPEAKER ASSY
a. Check that malfunction disappears when another speaker in a good condition is installed.
OK: Malfunction disappears.
HINT:
Connect all the connectors to the speakers.
When there is a possibility that either right or left front speaker is defective, inspect by
interchanging the right one and the left one.
OK: REPLACE FRONT NO.2 SPEAKER ASSY (SEE REPLACEMENT
)
NG: Go to next step
4.INSPECT REAR NO. 1 SPEAKER ASSY
a. Resistance check.
1. Measure the resistance between the terminals of the speaker.
Standard:
Standard models: 4 ohms
Mark Levinson models: 8 ohms
NG: REPLACE REAR NO. 1 SPEAKER ASSY (SEE REPLACEMENT
)
OK: Go to next step
5.INSPECT REAR NO. 2 SPEAKER ASSY
a. Check that malfunction disappears when another speaker in a good condition is installed.
OK: Malfunction disappears.
HINT:
Connect all the connectors to the speakers.
When there is a possibility that either right or left front speaker is defective, inspect by
interchan
ging the right one and the left one.
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OK: REPLACE REAR NO. 2 SPEAKER ASSY (SEE REPLACEMENT )
NG: Go to next step
6.INSPECT WOOFER
a. Resistance check.
1. Measure the resistance between the terminals of the speaker.
Standard:
TESTER CONNECTION CONDITION CHART
NG: REPLACE WOOFER (SEE REPLACEMENT
)
Tester connectionSpecified Condition
1 - 32 ohms(1)
2 - 42 ohms(1)
1 - 214.5 7ohms(2)
(1)Standard models
(2)Mark Levinson models