DTC B15C0: Short in GPS Antenna; DTC B15C1: Open in GPS Antenna [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC

Turn the power switch off.
Connect the Techstream to the DLC3.
Turn the power switch on (IG) and wait for 10 seconds.
Turn the Techstream on.

Perform "Health Check" and check for current DTCs. Refer to HEALTH CHECK [08/2013 - ] .

Result

Result	Proceed to
DTC B15C0 or B15C1 is output.	A
DTC B15C0 or B15C1 is not output.	B

B → See step 7

A: Go to next step

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

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the telephone and GPS antenna cord (No. 2 floor wire) connector from the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly).

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
Q31-2 - Q30-1	Always	Below 1 Ω
Q31-2a - Q30-1a	Always	Below 1 Ω
Q31-2 - Body ground	Always	10 kΩ or higher
Q31-2a - Body ground	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*a	Telephone and GPS Antenna Cord (No. 2 Floor Wire)

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

OK: Go to next step

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY)

Disconnect the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly) connector from the telephone and GPS antenna cord (No. 2 floor wire).

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
A-2 - B-2	Always	Below 1 Ω
A-2a - B-2a	Always	Below 1 Ω
A-2 - Body ground	Always	10 kΩ or higher
A-2a - Body ground	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*a	Telephone and GPS Antenna Cord (No. 3 Antenna Cord Sub-assembly)

NG → See step 9

OK: Go to next step

REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY
1. Replace the telephone and GPS antenna assembly with a known good one and check if the same problem occurs again. Refer to REMOVAL [08/2013 - ] .
  OK
  
  The system returns to normal.
NG → See step 5

OK → END
REPLACE DCM (TELEMATICS TRANSCEIVER)
1. Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ] .
  NOTE:
  - The power switch must be off.
  - Do not replace the DCM (telematics transceiver) with one from another vehicle.
NEXT: Go to next step
PERFORM PRL UPDATE
1. Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .
NEXT → See step 8
CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
PERFORM DCM ACTIVATION. Refer to DCM ACTIVATION [08/2013 - ]
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY). Refer to REMOVAL [08/2013 - ]