DTC B15C3: Speaker Output Short [09/2014 - ]: Procedure

1. Disconnect the I152 and I153 radio and display receiver assembly connectors.
2. Disconnect the I83 and I1 front No. 2 speaker assembly connectors.
3. Disconnect the O18 and O21 rear speaker assembly connectors.
4. Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I152-1 (FR+) - Body ground	Always	10 kΩ or higher
   I152-5 (FR-) - Body ground	Always	10 kΩ or higher
   I152-2 (FL+) - Body ground	Always	10 kΩ or higher
   I152-6 (FL-) - Body ground	Always	10 kΩ or higher
   I153-1 (RR+) - Body ground	Always	10 kΩ or higher
   I153-3 (RR-) - Body ground	Always	10 kΩ or higher
   I153-2 (RL+) - Body ground	Always	10 kΩ or higher
   I153-6 (RL-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the J5 and K5 front No. 1 speaker assembly connectors.
2. Disconnect the I83 and I1 front No. 2 speaker assembly connectors.
3. Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I83-3 (+) - Body ground	Always	10 kΩ or higher
   I83-1 (-) - Body ground	Always	10 kΩ or higher
   I1-3 (+) - Body ground	Always	10 kΩ or higher
   I1-1 (-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the front No. 1 speaker assembly. Refer to REMOVAL [09/2014 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

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

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   8 

OK: Go to next step 

1. Remove the front No. 2 speaker assembly. Refer to REMOVAL [09/2014 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

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

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   9 

OK: Go to next step 

1. Replace the front No. 2 speaker assembly with a new or known good one. Refer to REMOVAL [09/2014 - ] .
2. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2014 - ] .
3. Recheck for DTCs and check that no DTCs are output.

   OK

   No DTCs are output.

   HINT: 

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

NG → See step   6 

OK → END 

1. Remove the rear speaker assembly. Refer to REMOVAL [09/2014 - ] .
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

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

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Rear Speaker Assembly)

NG → See step   10 

OK → See step   7