DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 112 (Smart Key System (For Start, HV) - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2)) >> SMART KEY SYSTEM (for Start Function, HV Model) >> DTC U0129-87: Lost Communication with Brake System Control Module "A" 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; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0230-87: Lost Communication with Rear Gate Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1110-87: Lost Communication with Intuitive Parking Assist Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [11/2023 - ] >> Description

DTC U0129-87: Lost Communication with Brake System Control Module "A" 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; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U0230-87: Lost Communication with Rear Gate Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1110-87: Lost Communication with Intuitive Parking Assist Module Missing Message; DTC U1117-87: Lost Communication with Accessory Gateway Missing Message [11/2023 - ]: Description

WARNING: This page is about a different variant/trim than selected.

These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly) and No. 2 skid control ECU (brake actuator assembly), main body ECU (multiplex network body ECU), combination meter assembly, radio and display receiver assembly, multiplex network door ECU*, hybrid vehicle control ECU or clearance warning ECU assembly, and data from the option connector (bus buffer ECU) cannot be received.

  1. *: w/ Power Back Door System
DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0129-87 Lost Communication with Brake System Control Module "A" Missing Message CAN communication error between certification ECU (smart key ECU assembly) and No. 2 skid control ECU (brake actuator assembly) (1-trip detection logic*1) No. 2 skid control ECU (brake actuator assembly) DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U0140-87 Lost Communication with Body Control Module Missing Message CAN communication malfunction between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*1) Main body ECU (multiplex network body ECU) DTC Output Confirmation Operation: 
  1. Always
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module CAN communication malfunction between certification ECU (smart key ECU assembly) and combination meter assembly (1-trip detection logic*1) Combination meter assembly DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U0163-87 Lost Communication with Navigation Control Module Missing Message CAN communication malfunction between certification ECU (smart key ECU assembly) and radio and display receiver assembly (1-trip detection logic*1) Radio and display receiver assembly DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U0230-87 Lost Communication with Rear Gate Module Missing Message CAN communication malfunction between certification ECU (smart key ECU assembly) and multiplex network door ECU (1-trip detection logic*1)*2 Multiplex network door ECU DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U0293-87 Lost Communication with Hybrid/EV Powertrain Control Module Missing Message CAN communication error between certification ECU (smart key ECU assembly) and hybrid vehicle control ECU (1-trip detection logic*1) Hybrid vehicle control ECU DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U1110-87 Lost Communication with Intuitive Parking Assist Module Missing Message CAN communication error between certification ECU (smart key ECU assembly) and clearance warning ECU assembly (1-trip detection logic*1) Clearance warning ECU assembly DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
U1117-87 Lost Communication with Accessory Gateway Missing Message CAN communication malfunction between the certification ECU (smart key ECU assembly) and the option connector (bus buffer ECU) for approximately 10 seconds or more. Option connector (bus buffer ECU) DTC Output Confirmation Operation: 
  1. Turn the ignition switch to ON and wait at least 10 seconds.
  1. *1: Only detected while a malfunction is present.
  2. *2: w/ Power Back Door System
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

DTC Code Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
U0129-87 There is no effect on vehicle behavior. -
U0140-87
  • Doors cannot be locked or unlocked.
  • The warning (wireless buzzer) does not sound.
 -
U0155-87 The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. -
U0163-87 There is no effect on vehicle behavior. -
U0230-87* Power back door system does not operate. -
U0293-87 There is no effect on vehicle behavior. -
U1110-87 There is no effect on vehicle behavior. -
U1117-87 The hybrid control system cannot be started using the wireless remote control function. -
  1. *: w/ Power Back Door System
RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No. Data List and Active Test
U0129-87
U0140-87
U0155-87
U0163-87
U0230-87*
U0293-87
U1110-87
U1117-87		 -
  1. *: w/ Power Back Door System
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