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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 B1571-11: Indicator (Green) Circuit Short to Ground; DTC B1571-13: Indicator (Green) Circuit Open [09/2020 - ] >> Description

DTC B1571-11: Indicator (Green) Circuit Short to Ground; DTC B1571-13: Indicator (Green) Circuit Open [09/2020 - ]: Description

This DTC is set when the DCM (telematics transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the engine switch is turned on (IG).

If the safety connect system is not active, the manual (SOS) switch green indicator will turn off.

If the safety connect system is active, the manual (SOS) switch green indicator will blink while communicating with the call center.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1571-11 Indicator (Green) Circuit Short to Ground Manual (SOS) switch green indicator impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the engine switch is on (IG)
  • DCM (telematics transceiver)
  • Map light sub-assembly (manual (SOS) switch)
  • Harness or connector
B1571-13 Indicator (Green) Circuit Open Manual (SOS) switch green indicator impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the engine switch is on (IG)
  • DCM (telematics transceiver)
  • Map light sub-assembly (manual (SOS) switch)
  • Harness or connector