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Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostic Codes (2 Of 2), Circuit & Symptom Tests >> Meter / Gauge System >> DTC B1512-87: Lost Communication with Steering Switch Control Module Missing Message [10/2023 - ] >> Description

DTC B1512-87: Lost Communication with Steering Switch Control Module Missing Message [10/2023 - ]: Description

Combination meter assembly performs the communication with the heated steering wheel controller (multiplex network steering ECU) by CXPI communication.

When the communication with the heated steering wheel controller (multiplex network steering ECU) stops, Combination meter assembly outputs B1512-87.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B1512-87 Lost Communication with Steering Switch Control Module Missing Message Diagnosis Condition:
  • Ignition switch ON
  • IG power source voltage is 10.5 V or more

Malfunction Status:
  1. No communication with heated steering wheel controller (multiplex network steering ECU)

Malfunction Time:
  1. 10 seconds or more
  • Harness or connector
  • Spiral cable sub-assembly
  • Heated steering wheel controller (multiplex network steering ECU)
  • Combination meter assembly
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