DTC B1573: Short in Telephone Antenna Circuit; DTC B15CB: Telematics Transceiver Antenna Disconnected [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 B1573 or B15CB is output. A DTC B1573 or B15CB is not output. B
B → See step 8
A: Go to next step
- INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY
- Disconnect the telephone and GPS antenna assembly 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 3 - 3a Always 4 to 11 kΩ TEXT IN ILLUSTRATION*a Component with harness connected
(Telephone and GPS Antenna Assembly)
NG → See step 9
OK: Go to next step
- Disconnect the telephone and GPS antenna assembly connector from the telephone and GPS antenna cord (No. 3 antenna cord sub-assembly).
- 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-3 - B-3 Always Below 1 Ω A-3a - B-1a Always Below 1 Ω A-3 - Body ground Always 10 kΩ or higher A-3a - 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 11
OK: Go to next step
- 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).
- 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).
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Q31-3 - Q29-1 Always Below 1 Ω Q31-3a - Q29-1a Always Below 1 Ω Q31-3 - Body ground Always 10 kΩ or higher Q31-3a - 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
- Disconnect the telephone and GPS antenna cord (No. 2 floor wire) connector from the DCM (Telematics Transceiver).
- REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY
- 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 6
OK → END
- 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 - ]
.
- REPLACE DCM (TELEMATICS TRANSCEIVER)
- 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
- Replace the DCM (Telematics Transceiver). Refer to REMOVAL [08/2013 - ]
.
- PERFORM PRL UPDATE
- Perform "PRL UPDATE". Refer to PRL UPDATE [08/2013 - ] .
NEXT → See step 10
- CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
- REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY. Refer to REMOVAL [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 - ]