DTC B1573: Short in Telephone Antenna Circuit; DTC B15CB: Telematics Transceiver Antenna Disconnected: Procedure

1. Turn the ignition switch off.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to ON and wait for 10 seconds.
4. Perform "HEALTH CHECK" and check for current DTCs. Refer to HEALTH CHECK .
   RESULT
   
   

   Result	Proceed to
   DTC B1573 or B15CB is output	A
   DTC B1573 or B15CB is not output	B

B → See step   6 

A: Go to next step 

1. Disconnect the A telephone and GPS antenna cord (Antenna Cord Sub-assembly) connector from the DCM (Telematics Transceiver).
   Fig 1: Inspecting Telephone And GPS Antenna Assembly (DCM - Telephone And GPS Antenna)

   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
   A-1 - A-1a	Always	4 to 11 kΩ

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of telephone and GPS antenna cord (Antenna cord sub-assembly) connector (to DCM (Telematics Transceiver)) Connector color: Blue

NG → See step   4 

OK: Go to next step 

1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL .
   NOTE:

   • The ignition switch must be off.
   • Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

NEXT → See step   7 

1. Disconnect the D telephone and GPS antenna assembly connector.
   Fig 2: Inspecting Telephone And GPS Antenna 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
   D-3 - D-3a	Always	4 to 11 kΩ

   TEXT IN ILLUSTRATION
   
   

   *1	Telephone and GPS Antenna Assembly Connector color: Blue

NG → See step   8 

OK: Go to next step 

1. Disconnect the A DCM (Telematics Transceiver) connector.
   Fig 3: Inspecting Telephone And GPS Antenna Cord (Antenna Cord Sub-Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the C telephone and GPS antenna cord (Vehicle's wire harness) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A-1 - C-3	Always	Below 1 Ω
   A-1a - C-3a	Always	Below 1 Ω
   A-1 - Body ground	Always	10 kΩ or higher
   A-1a - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Telephone and GPS Antenna Cord (Antenna Cord Sub-Assembly)
   *2	Telephone and GPS Antenna Cord (Vehicle's Wire Harness)
   *a	A Connector Color: Blue
   *b	C Connector Color: Blue

NG → See step   9 

OK → REPLACE TELEPHONE AND GPS ANTENNA CORD (VEHICLE'S WIRE HARNESS)