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Home >> Lexus >> 2021 >> RC F Fuji Speedway Edition >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Safety Connect System - Diagnostic Codes & Symptom Tests >> Safety Connect System >> DTC B1536: Short in Telephone SUB Antenna Circuit; DTC B1537: Open in Telephone SUB Antenna Circuit [11/2017 - 09/2020] >> Description

DTC B1536: Short in Telephone SUB Antenna Circuit; DTC B1537: Open in Telephone SUB Antenna Circuit [11/2017 - 09/2020]: Description

These DTCs are stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly (for Front Side) circuit. The DCM (Telematics Transceiver) receives 869 - 894 MHz or 1930 - 1990 MHz radio-frequency through the telephone and GPS antenna assembly (for Front Side).

DTC No. Detection Item DTC Detection Condition Trouble Area
B1536 Short in Telephone SUB Antenna Circuit Telephone and GPS antenna assembly (for Front Side) impedance is lower than malfunction criterion for 10 seconds when engine switch is on (IG).
(Short circuit)
  • DCM (Telematics Transceiver)
  • Telephone and GPS antenna assembly (for Front Side)
B1537 Open in Telephone SUB Antenna Circuit Telephone and GPS antenna assembly (for Front Side) impedance is higher than malfunction criterion for 10 seconds when engine switch is on (IG).
(Open circuit)
  • DCM (Telematics Transceiver)
  • Telephone and GPS antenna assembly (for Front Side)