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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Safety Connect System (Diagnostic Codes & Symptom Tests) >> Safety Connect System >> DTC B1573: Short in Telephone Antenna Circuit; DTC B15CB: Telematics Transceiver Antenna Disconnected >> Description

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

This DTC is stored when the DCM (telematics transceiver) detects an open or short in the telephone and GPS antenna circuit. The DCM (telematics transceiver) sends and receives signals at a radio frequency of between 824 and 894 MHz or 1850 and 1990 MHz through the telephone and GPS antenna.

DTC Code DTC Detection Condition Trouble Area
B1573 The telephone and GPS antenna impedance is lower than the malfunction criterion for 10 seconds when the engine switch is on (IG) (short circuit).
  • DCM (Telematics Transceiver)
  • Telephone and GPS antenna
  • No. 3 Antenna Cord Sub-assembly
  • No. 2 Antenna Cord Sub-assembly
  • Antenna Cord Sub-assembly
B15CB The telephone and GPS antenna impedance is higher than the malfunction criterion for 10 seconds when the engine switch is on (IG) (open circuit).
  • DCM (Telematics Transceiver)
  • Telephone and GPS antenna
  • No. 3 Antenna Cord Sub-assembly
  • No. 2 Antenna Cord Sub-assembly
  • Antenna Cord Sub-assembly

HINT: 

Refer to "Parts Location" for the installation location of the telephone and GPS antenna cord. Refer to PARTS LOCATION .