Speaker Circuit (From 8/2009): Procedure

1. Disconnect the connectors shown in the illustration from the stereo component amplifier assembly, DCM (telematics transceiver)*1 and speakers.
   • *1: w/ Manual (SOS) Switch
   TEXT IN ILLUSTRATION
   
   

   *A	for 12 Speakers
   *B	for 9 Speakers
   *C	for LH
   *D	for RH
   *E	w/ Manual (SOS) Switch
   *1	Front view of wire harness connector (to Stereo Component Amplifier Assembly)
   *2	Front view of wire harness connector (to Stereo Component Amplifier Assembly)
   *3	Front view of wire harness connector (to Front No. 2 Speaker)
   *4	Front view of wire harness connector (to Front No. 3 Speaker, Front No. 4 Speaker)
   *5	Front view of wire harness connector (to Rear No. 3 Speaker)
   *6	Front view of wire harness connector (to Stereo Component Amplifier Assembly)
   *7	Front view of wire harness connector (to Rear No. 2 Speaker)
   *8	Front view of wire harness connector (to Front No. 1 Speaker, Rear No. 1 Speaker)
   *9	Front view of wire harness connector (to DCM (Telematics Transceiver))

   Fig 1: Measure The Resistance Between Each Of The Front No. 1 Speakers And The Stereo Component Amplifier Assembly (1 Of 3)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Measure The Resistance Between Each Of The Front No. 1 Speakers And The Stereo Component Amplifier Assembly (2 Of 3)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 3: Measure The Resistance Between Each Of The Front No. 1 Speakers And The Stereo Component Amplifier Assembly (3 Of 3)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O16-3 (WFL+) - J2-1	Always	Below 1 Ω
   O16-8 (WFL-) - J2-2	Always	Below 1 Ω
   O16-10 (WFR+) - I3-1	Always	Below 1 Ω
   O16-9 (WFR-) - I3-2	Always	Below 1 Ω

3. Measure the resistance between the front No. 2 speaker LH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

   Standard Resistance

   FOR 12 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O17-3 (FL+) - J4-1 (TWL+)	Always	Below 1 Ω
   O17-9 (FL-) - J4-2 (TWL-)	Always	Below 1 Ω

   FOR 9 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O34-1 (FL+) - J4-1 (TWL+)	Always	Below 1 Ω
   O34-5 (FL-) - J4-2 (TWL-)	Always	Below 1 Ω

4. w/o Manual (SOS) Switch:

   Measure the resistance between the front No. 2 speaker RH and the stereo component amplifier assembly to check for an open circuit in the wire harness.

   Standard Resistance

   FOR 12 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O17-4 (FR+) - I5-1 (TWR+)	Always	Below 1 Ω
   O17-10 (FR-) - I5-2 (TWR-)	Always	Below 1 Ω

   FOR 9 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O34-2 (FR+) - I5-1 (TWR+)	Always	Below 1 Ω
   O34-6 (FR-) - I5-2 (TWR-)	Always	Below 1 Ω

5. w/ Manual (SOS) Switch:

   Measure the resistance between the stereo component amplifier assembly and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

   Standard Resistance

   FOR 12 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O17-4 (FR+) - G25-2 (SPI+)	Always	Below 1 Ω
   O17-10 (FR-) - G25-3 (SPI-)	Always	Below 1 Ω

   FOR 9 SPEAKERS
   
   

   Tester Connection	Condition	Specified Condition
   O34-2 (FR+) - G25-2 (SPI+)	Always	Below 1 Ω
   O34-6 (FR-) - G25-3 (SPI-)	Always	Below 1 Ω

6. w/ Manual (SOS) Switch:

   Measure the resistance between the front No. 2 speaker RH and the DCM (telematics transceiver) to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G25-5 (SPO+) - I5-1 (TWR+)	Always	Below 1 Ω
   G25-6 (SPO-) - I5-2 (TWR-)	Always	Below 1 Ω

7. Measure the resistance between each of the front No. 2 speakers and the front No. 3 speakers to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I5-3 (+) - I6-2	Always	Below 1 Ω
   I5-4 (-) - I6-1	Always	Below 1 Ω
   J4-3 (+) - J6-2	Always	Below 1 Ω
   J4-4 (-) - J6-1	Always	Below 1 Ω

8. for 9 Speakers:

   Measure the resistance between each of the rear No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O16-4 (RL+) - L4-1	Always	Below 1 Ω
   O16-11 (RL-) - L4-2	Always	Below 1 Ω
   O16-5 (RR+) - K4-1	Always	Below 1 Ω
   O16-12 (RR-) - K4-2	Always	Below 1 Ω

9. for 12 Speakers:

   Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O16-4 (RL+) - L1-1 (+TW)	Always	Below 1 Ω
   O16-11 (RL-) - L1-2 (-TW)	Always	Below 1 Ω
   O16-5 (RR+) - K1-1 (+TW)	Always	Below 1 Ω
   O16-12 (RR-) - K1-2 (-TW)	Always	Below 1 Ω

10. for 12 Speakers:

    Measure the resistance between each of the rear No. 2 speakers and the rear No. 1 speakers to check for an open circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    L1-3 (+) - L4-1	Always	Below 1 Ω
    L1-4 (-) - L4-2	Always	Below 1 Ω
    K1-3 (+) - K4-1	Always	Below 1 Ω
    K1-4 (-) - K4-2	Always	Below 1 Ω

11. for 12 Speakers:

    Measure the resistance between the rear No. 3 speaker and the stereo component amplifier assembly to check for an open circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    O17-1 (WF1+) - P22-1 (WF1+)	Always	Below 1 Ω
    O17-5 (WF1-) - P22-3 (WF1-)	Always	Below 1 Ω
    O17-2 (WF2+) - P22-2 (WF2+)	Always	Below 1 Ω
    O17-6 (WF2-) - P22-4 (WF2-)	Always	Below 1 Ω

12. Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    O16-3 (WFL+) - Body ground	Always	10 kΩ or higher
    O16-8 (WFL-) - Body ground	Always	10 kΩ or higher
    O16-10 (WFR+) - Body ground	Always	10 kΩ or higher
    O16-9 (WFR-) - Body ground	Always	10 kΩ or higher
    O16-4 (RL+) - Body ground	Always	10 kΩ or higher
    O16-11 (RL-) - Body ground	Always	10 kΩ or higher
    O16-5 (RR+) - Body ground	Always	10 kΩ or higher
    O16-12 (RR-) - Body ground	Always	10 kΩ or higher
    O34-1 (FL+) - Body ground*1	Always	10 kΩ or higher
    O34-5 (FL-) - Body ground*1	Always	10 kΩ or higher
    O34-2 (FR+) - Body ground*1	Always	10 kΩ or higher
    O34-6 (FR-) - Body ground*1	Always	10 kΩ or higher
    O34-8 (CTR+) - Body ground*1	Always	10 kΩ or higher
    O34-7 (CTR-) - Body ground*1	Always	10 kΩ or higher
    O17-1 (WF1+) - Body ground*2	Always	10 kΩ or higher
    O17-5 (WF1-) - Body ground*2	Always	10 kΩ or higher
    O17-2 (WF2+) - Body ground*2	Always	10 kΩ or higher
    O17-6 (WF2-) - Body ground*2	Always	10 kΩ or higher
    O17-4 (FR+) - Body ground*2	Always	10 kΩ or higher
    O17-10 (FR-) - Body ground*2	Always	10 kΩ or higher
    O17-3 (FL+) - Body ground*2	Always	10 kΩ or higher
    O17-9 (FL-) - Body ground*2	Always	10 kΩ or higher
    O17-8 (CTR+) - Body ground*2	Always	10 kΩ or higher
    O17-7 (CTR-) - Body ground*2	Always	10 kΩ or higher

    • *1: for 9 Speakers
    • *2: for 12 Speakers
13. Measure the resistance between each of the front No. 2 speakers and body ground to check for a short circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    I5-3 (+) - Body ground	Always	10 kΩ or higher
    I5-4 (-) - Body ground	Always	10 kΩ or higher
    J4-3 (+) - Body ground	Always	10 kΩ or higher
    J4-4 (-) - Body ground	Always	10 kΩ or higher

14. for 12 Speakers:

    Measure the resistance between each of the rear No. 2 speakers and body ground to check for a short circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    L1-3 (+) - Body ground	Always	10 kΩ or higher
    L1-4 (-) - Body ground	Always	10 kΩ or higher
    K1-3 (+) - Body ground	Always	10 kΩ or higher
    K1-4 (-) - Body ground	Always	10 kΩ or higher

15. w/ Manual (SOS) Switch:

    Measure the resistance between the front No. 2 speaker RH and body ground to check for a short circuit in the wire harness.

    Standard Resistance

    Tester Connection	Condition	Specified Condition
    I5-1 (TWR+) - Body ground	Always	10 kΩ or higher
    I5-2 (TWR-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Resistance check
   Fig 4: Identifying J2 & I3 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      J2-1 - J2-2	Always	3.2 to 4.8 Ω
      I3-1 - I3-2	Always	3.2 to 4.8 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Front No. 1 Speaker)

NG → See step   13 

OK: Go to next step 

1. Resistance check
   Fig 5: Identifying I5 & J4 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      I5-1 (TWR+) - I5-2 (TWR-)	Always	10 kΩ or higher
      I5-1 (TWR+) - I5-3 (+)	Always	Below 1 Ω
      I5-2 (TWR-) - I5-4 (-)	Always	Below 1 Ω
      J4-1 (TWL+) - J4-2 (TWL-)	Always	10 kΩ or higher
      J4-1 (TWL+) - J4-3 (+)	Always	Below 1 Ω
      J4-2 (TWL-) - J4-4 (-)	Always	Below 1 Ω

      TEXT IN ILLUSTRATION
      
      

      *A	for RH
      *B	for LH
      *1	Component without harness connected (Front No. 2 Speaker)

NG → See step   14 

OK: Go to next step 

1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

   OK

   Malfunction disappears.

   HINT: 

   • Connect all the connectors to the front No. 2 speakers that were disconnected.
   • 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.
   • Perform the above inspection on both LH and RH sides.

NG → See step   5 

OK → END (FRONT NO. 2 SPEAKER WAS DEFECTIVE) 

1. Resistance check
   Fig 6: Identifying J6 & I6 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      J6-1 - J6-2	Always	3.2 to 4.8 Ω
      I6-1 - I6-2	Always	3.2 to 4.8 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Front No. 3 Speaker)

NG → See step   15 

OK: Go to next step 

1. Resistance check
   Fig 7: Identifying H2 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      H2-1 - H2-2	Always	4.8 to 7.2 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Front No. 4 Speaker)

NG → See step   16 

OK: Go to next step 

1. Resistance check
   Fig 8: Identifying L4 & K4 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      L4-1 - L4-2	Always	3.2 to 4.8 Ω
      K4-1 - K4-2	Always	3.2 to 4.8 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Rear No. 1 Speaker)

2. Proceed to the next step based on the inspection result.

   Result

   Condition	Proceed to
   OK (for 12 Speakers)	A
   OK (for 9 Speakers, w/ Manual (SOS) Switch)	B
   OK (for 9 Speakers, w/o Manual (SOS) Switch)	C
   NG	D

D → See step   17 

C → See step   12 

B → See step   11 

A: Go to next step 

1. Resistance check
   Fig 9: Identifying L1 & K1 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      L1-1 (+TW) - L1-2 (-TW)	Always	10 kΩ or higher
      L1-1 (+TW) - L1-3 (+)	Always	Below 1 Ω
      L1-2 (-TW) - L1-4 (-)	Always	Below 1 Ω
      K1-1 (+TW) - K1-2 (-TW)	Always	10 kΩ or higher
      K1-1 (+TW) - K1-3 (+)	Always	Below 1 Ω
      K1-2 (-TW) - K1-4 (-)	Always	Below 1 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Rear No. 2 Speaker)

NG → See step   18 

OK: Go to next step 

1. Check that the malfunction disappears when a known good speaker is installed. Refer to REMOVAL .

   OK

   Malfunction disappears.

   HINT: 

   • Connect all the connectors to the rear No. 2 speakers that were disconnected.
   • When there is a possibility that either the right or left rear speaker is defective, inspect by interchanging the right one with the left one.
   • Perform the above inspection on both LH and RH sides.

NG → See step   10 

OK → END (REAR NO. 2 SPEAKER WAS DEFECTIVE) 

1. Resistance check
   Fig 10: Identifying P22 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      P22-1 (WF1+) - P22-3 (WF1-)	Always	2.4 to 3.6 Ω
      P22-2 (WF2+) - P22-4 (WF2-)	Always	2.4 to 3.6 Ω

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (Rear No. 3 Speaker)

2. Proceed to the next step based on the inspection result.

   Result

   Condition	Proceed to
   OK (w/ Manual (SOS) Switch)	A
   OK (w/o Manual (SOS) Switch)	B
   NG	C

C → See step   19 

B → See step   12 

A: Go to next step 

1. Resistance check
   Fig 11: Identifying G25 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      G25-2 (SPI+) - G25-5 (SPO+)	Always	Below 1 Ω
      G25-3 (SPI-) - G25-6 (SPO-)	Always	Below 1 Ω
      G25-2 (SPI+) - G25-3 (SPI-)	Always	10 kΩ or higher
      G25-5 (SPO+) - G25-6 (SPO-)	Always	10 kΩ or higher
      G25-3 (SPI-) - Body ground	Always	10 kΩ or higher
      G25-6 (SPO-) - Body ground	Always	10 kΩ or higher

      TEXT IN ILLUSTRATION
      
      

      *1	Component without harness connected (DCM (Telematics Transceiver))

NG → See step   20 

OK → See step   12