Speaker Circuit: Procedure

1. Check the malfunctioning speakers.
   RESULT
   
   

   Result	Proceed to
   Malfunction in front speaker area	A
   Malfunction in rear speaker area	B

B → See step   7 

A: Go to next step 

1. Check the malfunctioning speakers.
   RESULT
   
   

   Result	Proceed to
   Front No. 2 speaker assembly	A
   Front No. 1 speaker assembly	B

B → See step   5 

A: Go to next step 

1. Disconnect the D81 and/or D10 front No. 2 speaker assembly connector.
   Fig 1: Checking Front No. 2 Speaker Assembly

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

   Standard Resistance

   for RH 

   for LH 

   Tester Connection	Condition	Specified Condition
   1 (+) - 2 (TWR+)	Always	Below 1 Ω
   3 (-) - 4 (TWR-)	Always	Below 1 Ω
   2 (TWR+) - 4 (TWR-)	Always	Approximately 4.0 Ω

   Tester Connection	Condition	Specified Condition
   1 (+) - 2 (TWL+)	Always	Below 1 Ω
   3 (-) - 4 (TWL-)	Always	Below 1 Ω
   2 (TWL+) - 4 (TWL-)	Always	Approximately 4.0 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Front No. 2 Speaker Assembly)
   *b	for RH Side
   *c	for LH Side

NG → See step   9 

OK: Go to next step 

1. Disconnect the D57 navigation receiver assembly connector.
2. Disconnect the D81 and/or D10 front No. 2 speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open (RH Side))

   Tester Connection	Condition	Specified Condition
   D57-1 (FR+) - D81-2 (TWR+)	Always	Below 1 Ω
   D57-5 (FR-) - D81-4 (TWR-)	Always	Below 1 Ω

   Standard Resistance (Check for Short (RH Side))

   Tester Connection	Condition	Specified Condition
   D57-1 (FR+) - Body ground	Always	10 kΩ or higher
   D57-5 (FR-) - Body ground	Always	10 kΩ or higher

   Standard Resistance (Check for Open (LH Side))

   Tester Connection	Condition	Specified Condition
   D57-2 (FL+) - D10-2 (TWL+)	Always	Below 1 Ω
   D57-6 (FL-) - D10-4 (TWL-)	Always	Below 1 Ω

   Standard Resistance (Check for Short (LH Side))

   Tester Connection	Condition	Specified Condition
   D57-2 (FL+) - Body ground	Always	10 kΩ or higher
   D57-6 (FL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   10 

1. Disconnect the G8 and/or H6 front No. 1 speaker assembly connector.
   Fig 2: Checking Front No. 1 Speaker Assembly

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	Approximately 4.0 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   11 

OK: Go to next step 

1. Disconnect the D81 and/or D10 front No. 2 speaker assembly connector.
2. Disconnect the G8 and/or H6 front No. 1 speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open (RH Side)

   Tester Connection	Condition	Specified Condition
   D81-1 (+) - G8-1	Always	Below 1 Ω
   D81-3 (-) - G8-2	Always	Below 1 Ω

   Standard Resistance (Check for Short (RH Side)

   Tester Connection	Condition	Specified Condition
   D81-1 (+) - Body ground	Always	10 kΩ or higher
   D81-3 (-) - Body ground	Always	10 kΩ or higher

   Standard Resistance (Check for Open (LH Side)

   Tester Connection	Condition	Specified Condition
   D10-1 (+) - H6-1	Always	Below 1 Ω
   D10-3 (-) - H6-2	Always	Below 1 Ω

   Standard Resistance (Check for Short (LH Side)

   Tester Connection	Condition	Specified Condition
   D10-1 (+) - Body ground	Always	10 kΩ or higher
   D10-3 (-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   12 

1. Disconnect the L16 and K10 rear speaker assembly connectors.
   Fig 3: Checking Rear Speaker Assembly

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Always	Approximately 4.0 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Rear Speaker Assembly)

NG → See step   13 

OK: Go to next step 

1. Disconnect the D62 navigation receiver assembly connector.
2. Disconnect the L16 and/or K10 rear speaker assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open (RH Side)

   Tester Connection	Condition	Specified Condition
   D62-1 (RR+) - L16-1	Always	Below 1 Ω
   D62-3 (RR-) - L16-2	Always	Below 1 Ω

   Standard Resistance (Check for Short (RH Side)

   Tester Connection	Condition	Specified Condition
   D62-1 (RR+) - Body ground	Always	10 kΩ or higher
   D62-3 (RR-) - Body ground	Always	10 kΩ or higher

   Standard Resistance (Check for Open (LH Side)

   Tester Connection	Condition	Specified Condition
   D62-2 (RL+) - K10-1	Always	Below 1 Ω
   D62-6 (RL-) - K10-2	Always	Below 1 Ω

   Standard Resistance (Check for Short (LH Side)

   Tester Connection	Condition	Specified Condition
   D62-2 (RL+) - Body ground	Always	10 kΩ or higher
   D62-6 (RL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   14