DTC B1579: Voice Recognition Microphone Disconnected: Procedure

1. 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
   J114-48 (MIN-) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Multimedia Module Receiver Assembly)

NG → See step   11 

OK: Go to next step 

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/ Manual (SOS) Switch	A
   w/o Manual (SOS) Switch	B

B → See step   7 

A: Go to next step 

1. Disconnect the J101 DCM (telematics transceiver) connector.
2. Disconnect the R5 map light assembly (telephone microphone assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J101-35 (MCI-) - R5-5 (MCO-)	Always	Below 1 Ω
   J101-35 (MCI-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the J114 multimedia module receiver assembly connector.
2. Disconnect the J101 DCM (telematics transceiver) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J114-48 (MIN-) - J101-19 (MCO-)	Always	Below 1 Ω
   J114-48 (MIN-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the J114 multimedia module receiver assembly connector.
2. Disconnect the R5 map light assembly (telephone microphone assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J114-49 (SNS2) - R5-4 (SNS2)	Always	Below 1 Ω
   J114-49 (SNS2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the J101 DCM (telematics transceiver) connector.
2. Reconnect the J114 multimedia module receiver assembly connector.
3. 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
   J101-35 (MCI-) - Body ground	Always	Below 1 Ω

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

   Result

   Result	Proceed to
   NG	A
   OK	B

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (DCM (Telematics Transceiver))

B → See step   8 

A → See step   12 

1. Disconnect the J114 multimedia module receiver assembly connector.
2. Disconnect the R5 map light assembly (telephone microphone assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J114-48 (MIN-) - R5-5 (MCO-)	Always	Below 1 Ω
   J114-49 (SNS2) - R5-4 (SNS2)	Always	Below 1 Ω
   J114-48 (MIN-) - Body ground	Always	10 kΩ or higher
   J114-49 (SNS2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the map light assembly (telephone microphone assembly).
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
   5 (MCO-) - 4 (SNS2)	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Map Light Assembly (Telephone Microphone Assembly))

NG → See step   9 

OK → See step   11 

1. Replace the telephone microphone assembly. Refer to REMOVAL [08/2012 - ] .
2. Clear the DTCs. Refer to DTC CHECK/CLEAR [08/2012 - ] .
3. Recheck for DTCs and check that no DTCs are output.

   OK

   No DTCs are output.

NG → See step   10 

OK → END