Inspection Procedure

CHECK HARNESS AND CONNECTOR
1. Disconnect the connectors shown in the illustration on the left from the stereo component amplifier assy or the radio receiver assy and speakers.
2. Measure the resistance between each speaker and the stereo component amplifier assy or the radio receiver assy to check for an open circuit in the wire harness.
  Standard: Below 1 Ω
3. Measure the resistance between each speaker and body ground to check for a short circuit in the wire harness.
  Standard: 10 kΩ or higher
  
  Fig 1: Identifying Wire Harness View Of Stereo Components Amplifier Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Identifying Wire Harness View Of Radio Receiver Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: Identifying Connector Front View Of Rear Speaker Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Identifying Connector Front View Of Front Speaker Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Identifying Connector Front View Of Woofer Box Speaker Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go To Next Step

CHECK VEHICLE TYPE

Choose type to be inspected.

INSPECTION CHART

Type	Proceed to
w/ Woofer Box Speaker Assy No.1	A
w/o Woofer Box Speaker Assy No.1	B

B Go to step 4

A

INSPECT WOOFER BOX SPEAKER ASSY NO.1

Resistance check.
Measure the resistance according to the value(s) in the table below.

Fig 6: Identifying Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: The speaker should not be removed for checking.

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester connection	Condition	Specified condition
1-3	Always	0.7 to 1.9 Ω
2-4	Always	0.7 to 1.9 Ω

NG: REPLACE WOOFER BOX SPEAKER ASSY NO.1 (SEE W/BOX SPEAKER ASSY NO.1 )

OK: Go To Next Step

INSPECT FRONT NO. 1 SPEAKER ASSY
1. Resistance check.
1. Measure the resistance between the terminals of the speaker.
  Standard:
  
  Separate Type Amplifier: 2.3 to 2.9 Ω
  
  Built-in Type Amplifier: 3.4 to 4.6 Ω
1. NG: REPLACE FRONT NO. 1 SPEAKER ASSY (SEE FRONT NO.1 SPEAKER ASSY )
OK: Go To Next Step
INSPECT FRONT NO. 2 SPEAKER ASSY
1. Check that malfunction disappears when another speaker in 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 detective, inspect by interchanging the right one and the left one.
1. NG: REPLACE FRONT NO. 2 SPEAKER ASSY (SEE FRONT NO.2 SPEAKER ASSY )
OK: Go To Next Step
INSPECT REAR SPEAKER ASSY
1. Resistance check.
1. Measure the resistance between the terminals of the speaker.
Standard:

Separate Type Amplifier: 1.6 to 2.0 Ω

Built-in Type Amplifier: 3.4 to 4.6 Ω
1. NG: REPLACE REAR SPEAKER ASSY (SEE REAR SPEAKER ASSY )
OK: Go To Next Step

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE