Inspection Procedure

1. Disconnect the connectors shown in Fig 1 from the stereo component amplifier assy and speakers.
2. Measure the resistance between the front No. 2 speaker assy and the stereo component amplifier assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

3. Measure the resistance between the rear speaker assy and the stereo component amplifier assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

   Fig 1: Checking Stereo Component Amplifier Assy Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Measure the resistance between the stereo component speaker assy and the stereo component amplifier assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

5. Measure the resistance between the woofer box speaker assy No. 2 and the stereo component amplifier assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

   Fig 2: Front No. 2 Speaker Assy Stereo Component Speaker Assy Connector Front View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Measure the resistance between the front No. 1 speaker assy and the front No. 2 speaker assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

7. Measure the resistance between the woofer box speaker assy No. 1 and the stereo component amplifier assy to check for an open circuit in the wire harness.

   Standard: Below 1 Ω 

8. 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 3: Front No. 1 Speaker Assy Rear Speaker Assy Connector Front View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 4: Woofer Box Speaker Assy No. 2 Connector Front View

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Woofer Box Speaker Assy No. 1 Connector Front View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: GO TO NEXT STEP 

1. Resistance check.
   1. Measure the resistance according to the value(s) in WOOFER BOX SPEAKER ASSY NO. 2 RESISTANCE .

Standard: 

Fig 6: Identifying Terminals Of Woofer Box Speaker Assy No. 2 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPLACE WOOFER BOX SPEAKER ASSY NO. 2 (SEE  W/BOX SPEAKER ASSY NO. 2  ) 
2. OK: GO TO NEXT STEP 

1. Resistance check.
   1. Measure the resistance between the terminals of the speaker.

   Standard: 4 to 6 Ω 

1. NG: REPLACE  FRONT NO. 1 SPEAKER ASSY 
2. OK: GO TO NEXT STEP 

1. Check that the 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 defective, inspect by interchanging the right one with the left one.

1. OK: REPLACE  FRONT NO. 2 SPEAKER ASSY 
2. NG: GO TO NEXT STEP 

1. Resistance check.
   1. Measure the resistance between the terminals of the speaker.

Standard: Approximately 2.4 Ω 

1. NG: REPLACE  REAR SPEAKER ASSY 
2. OK: GO TO NEXT STEP 

1. Check that the 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 rear speaker is defective, inspect by interchanging the right one with the left one.

1. OK: REPLACE WOOFER BOX SPEAKER ASSY NO. 1 (SEE  W/BOX SPEAKER ASSY NO. 1  ) 
2. NG: GO TO NEXT STEP 

1. Check that the 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 defective, inspect by interchanging the right one with the left one.

1. OK: REPLACE  STEREO COMPONENT SPEAKER ASSY 
2. NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE