Toyota Yaris: Headup Display System / Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087,U015587,U016487,U023A87)

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Vehicle Interior / Meter / Gauge / Display / Headup Display System / Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087,U015587,U016487,U023A87)

DESCRIPTION

The meter mirror sub-assembly communicates with each ECU via CAN communication.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U010087

Lost Communication With ECM/PCM "A" Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with ECM

Malfunction Time:

  • 3.6 seconds or more
  • ECM
  • CAN communication system
  • Meter mirror sub-assembly

U012987

Lost Communication With Brake System Control Module Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with skid control ECU (brake actuator assembly)

Malfunction Time:

  • 3.6 seconds or more
  • Skid control ECU (Brake actuator assembly)
  • CAN communication system
  • Meter mirror sub-assembly

U014087

Lost Communication with Body Control Module Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with main body ECU (multiplex network body ECU)

Malfunction Time:

  • 5.0 seconds or more
  • Main body ECU (Multiplex network body ECU)
  • CAN communication system
  • Meter mirror sub-assembly

U015587

Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with combination meter assembly

Malfunction Time:

  • 5.0 seconds or more
  • Combination meter assembly
  • CAN communication system
  • Meter mirror sub-assembly

U016487

Lost Communication with HVAC Control Module Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with air conditioning amplifier assembly

Malfunction Time:

  • 5.0 seconds or more
  • Air conditioning amplifier assembly
  • CAN communication system
  • Meter mirror sub-assembly

U023A87

Lost Communication with Image Processing Module "A" Missing Message

Diagnosis Condition:

  • The ignition switch is ON
  • IG power source voltage is 9.5 V or more

Malfunction Status:

  • No communication with forward recognition camera

Malfunction Time:

  • 5.0 seconds or more
  • Forward recognition camera
  • CAN communication system
  • Meter mirror sub-assembly

PROCEDURE

1.

CHECK FOR DTC (HEADUP DISPLAY SYSTEM)

(a) Check for headup display system DTCs.

Body Electrical > Head Up Display > Trouble Codes

Result

Proceed to

U010087, U012987, U014087, U015587, U016387, U016487, U023A87, U029387 or U111087 is output

A

DTCs are not output

B

None of the above conditions are met

C
A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

C

GO TO DIAGNOSTIC TROUBLE CODE CHART

    Diagnostic Trouble Code Chart

    D..

    Meter / Gauge System

    ..

    Other information:

    Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Terminals Of Ecu


    TERMINALS OF ECU CHECK STEREO COMPONENT EQUALIZER ASSEMBLY Terminal No. (Symbol) Terminal Description Condition Specified Condition O131-15(+B) - O131-30(GND) Power source Always 11 to 14 V O131-29(IGP) - O131-30(GND) Power source (IG) Ignition switch ON 11 to 14 V O131-14(ACC) - O131-30(GND) Power source (ACC) Ignition switch ACC 11 to 14 V O131-30(GND) - Body ground Ground Always Below 1 Ω O132-1(MC1+) - O131-30(GND) Active noise control microphone input signal Active noise control microphone LH tapped with finger Pulse generation O132-5(MC1-) - O131-30(GND) Active noise control microphone input signal Always Below 1 Ω O132-2(MC2+) - O131-30(GND) Active noise control microphone input signal Active noise control microphone RH tapped with finger Pulse generation O132-6(MC2-) - O131-30(GND) Active noise control microphone input signal Always Below 1 Ω O131-3(NEI) - O131-30(GND) Engine pulse signal Idling with warm engine Pulse generation (See waveform 1) O131-24(FLI-) Active noise control microphone output signal - - O131-9(FLI+) Active noise control microphone output signal - - O131-23(FRI-) Active noise control microphone output signal - - O131-8(FRI+) Active noise control microphone output signal - - O131-5(RRI+) Active noise control microphone output signal - - O131-20(RRI-) Active noise control microphone output signal - - O131-6(RLI+) Active noise control microphone output signal - - O131-21(RLI-) Active noise control microphone output signal - - O131-7(ASG1) Shield ground - - O131-22(ASG2) Shield ground - - O131-12(FR+) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-27(FR-) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-13(FL+) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-28(FL-) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-10(RR+) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131+25(RR-) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-11(RL+) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-28(RL-) - O131-30(GND) Sound signal Active noise control system operating Pulse generation O131-1(CANH) CAN communication signal - - O131-16(CANL) CAN communication signal - - (a) Waveform 1 HINT: The oscilloscope waveform shown in the illustration is an example for reference only...

    Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Parts Location


    PARTS LOCATION ILLUSTRATION *1 FORWARD RECOGNITION CAMERA (w/ Toyota Safety Sense) *2 MILLIMETER WAVE RADAR SENSOR ASSEMBLY (w/ Toyota Safety Sense) *3 BRAKE ACTUATOR ASSEMBLY *4 ECM ILLUSTRATION *1 4WD ECU ASSEMBLY - - ILLUSTRATION *1 COMBINATION METER ASSEMBLY *2 METER MIRROR SUB-ASSEMBLY (w/ Headup Display) *3 CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) *4 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *5 AIR CONDITIONING AMPLIFIER ASSEMBLY *6 AIRBAG SENSOR ASSEMBLY *7 POWER STEERING ECU ASSEMBLY *8 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) *9 STEERING SENSOR *10 ENGINE STOP AND START ECU *11 STEREO COMPONENT EQUALIZER ASSEMBLY (w/ Active Noise Control System) *12 POWER DISTRIBUTION BOX ASSEMBLY *13 DLC3 - - ILLUSTRATION *1 NO...

    Categories

    Supplemental Restraint System (SRS) Precautions

    The front and side supplemental restraint systems (SRS) include different types of air bags. Please verify the different types of air bags which are equipped on your vehicle by locating the “SRS AIRBAG” location indicators. These indicators are visible in the area where the air bags are installed.

    The air bags are installed in the following locations:

    The steering wheel hub (driver air bag) The front passenger dashboard (front passenger air bag) The outboard sides of the front seatbacks (side air bags) The front and rear window pillars, and the roof edge along both sides (curtain air bags)

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