LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Heating / Air Conditioning System - Diagnostic Codes (2 Of 2), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for Gasoline Model) >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0198-87: Lost Communication with Telematic Control Module "A" Missing Message; DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [10/2022 - ] >> Description

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0198-87: Lost Communication with Telematic Control Module "A" Missing Message; DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [10/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from Priority
U0100-87 Lost Communication with ECM/PCM "A" Missing Message Diagnosis Condition:
  1. IG voltage is 8.5 V or more.

Malfunction:
  1. No communication with ECM

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • ECM
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U0131-87 Lost Communication with Power Steering Control Module Missing Message Diagnosis Condition:
  1. IG voltage is 8.5 V or more.

Malfunction:
  1. No communication with power steering ECU (rack and pinion power steering gear assembly)

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • Power steering ECU (rack and pinion power steering gear assembly)
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U0140-87 Lost Communication with Body Control Module Missing Message Diagnosis Condition:
  1. IG voltage is 8.5 V or more.

Malfunction:
  1. No communication with main body ECU (multiplex network body ECU)

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message Diagnosis Condition:
  1. IG voltage is 8.5 V or more.

Malfunction:
  1. No communication with combination meter assembly

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • Combination meter assembly
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U0163-87 Lost Communication with Navigation Control Module Missing Message Diagnosis Condition:
  1. IG voltage is 8.5 V or more.

Malfunction:
  1. No communication with radio and display receiver assembly

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • Radio and display receiver assembly
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U0198-87 Lost Communication with Telematic Control Module "A" Missing Message Diagnosis Condition:
  1. IG voltage 8.5 V or higher

Malfunction Status:
  1. No communication with DCM (telematics transceiver)

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • DCM (telematics transceiver)
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
U1103-87 Lost Communication with Stop and Start Control Module Missing Message Diagnosis Condition:
  1. IG voltage 8.5 V or higher

Malfunction Status:
  1. No communication with engine stop and start ECU

Detection Time:
  1. Continuously for 10 seconds or more
  • CAN communication system
  • Engine stop and start ECU
  • Air conditioning amplifier assembly
 Memorized Air Conditioner B
scientia non olet · About LEMON Manuals