LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Heating / Air Conditioning System - Diagnostic Codes (2 Of 3)) >> AIR CONDITIONING SYSTEM (for PHEV Model) >> DTC B14B3-87: Lost Communication with Rear Panel LIN Missing Message [12/2023 - ] >> Description

DTC B14B3-87: Lost Communication with Rear Panel LIN Missing Message [12/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

The No. 2 air conditioning control assembly communicates with the air conditioning amplifier assembly via LIN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory DTC Output from Priority Note
B14B3-87 Lost Communication with Rear Panel LIN Missing Message Diagnosis Condition:
  1. Ignition switch ON

Malfunction:
  1. Error or open in communication line between air conditioning amplifier assembly and No. 2 air conditioning control assembly

Detection Time:
  1. Continuously for 10 seconds or more
  • Harness or connector
  • No. 2 air conditioning control assembly
  • Air conditioning amplifier assembly
Does not come on Memorized Air Conditioner A -
DTC DETECTION CONDITION COMBINATION TABLE

  Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON
Malfunction Error in communication line between air conditioning amplifier assembly and No. 2 air conditioning control assembly -
Open in communication line between air conditioning amplifier assembly and No. 2 air conditioning control assembly -
Detection Time Continuously for 10 seconds or more Continuously for 10 seconds or more
Trip Count 1 trip 1 trip

HINT: 

If the conditions of either of these patterns are detected, a DTC will be stored.