DTC B1573: Short in Telephone Antenna Circuit; DTC B15CB: Telematics Transceiver Antenna Disconnected [10/2014 - ]: Procedure

1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and wait for 10 seconds.
4. Turn the Techstream on.
5. Perform "Health Check" and check for current DTCs (Refer to HEALTH CHECK [10/2014 - ] ).

   Result

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

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] )

Result: 

A 

See step  2

1. Disconnect the telephone and GPS antenna assembly connector from the telephone and GPS antenna cord (No. 2 floor wire).

   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
   3 - 3a	Always	4 to 11 kΩ

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Telephone and GPS Antenna Assembly)

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY 

(Refer to REMOVAL [10/2014 - ] )

Result: 

OK 

See step  3

1. Disconnect the telephone and GPS antenna cord (No. 2 floor wire) connector from the DCM (Telematics Transceiver).

   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
   K20-3 - K22-1	Always	Below 1 Ω
   K20-3a - K22-1a	Always	Below 1 Ω
   K20-3 - Body ground	Always	10 kΩ or higher
   K20-3a - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Telephone and GPS antenna cord (No. 2 Floor Wire)

Result: 

NG 

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 FLOOR WIRE) 

Result: 

OK 

See step  4

1. Replace the telephone and GPS antenna assembly with a known good one and check if the same problem occurs again (Refer to REMOVAL [10/2014 - ] ).

   OK

   The system returns to normal.

Result: 

OK 

END 

Result: 

NG 

See step  5

1. Replace the DCM (Telematics Transceiver) (Refer to REMOVAL [10/2014 - ] ).
   NOTE:

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

Result: 

NEXT 

See step  6

1. Perform "PRL UPDATE" (Refer to PRL UPDATE [10/2014 - ] ).

Result: 

NEXT 

PERFORM DCM ACTIVATION 

(Refer to DCM ACTIVATION [10/2014 - ] )