Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) When a malfunction occurs in the pre-collision system, a message will be displayed on the multi-information display and the pre-collision system will be disabled depending on the malfunction.

Warning Message

Cause

DTC No.

Conditions to Return to Normal

"Pre-Collision System Malfunction Visit Your Dealer" is displayed

Pre-collision system malfunction

C1A01

After system returns to normal, engine switch is turned off and then on (IG)

C1A02

System returns to normal

C1A0A

System returns to normal

C1A10

After system returns to normal, engine switch is turned off and then on (IG)

C1A11

After system returns to normal, engine switch is turned off and then on (IG)

C1A14

System returns to normal

C1A46

After system returns to normal, engine switch is turned off and then on (IG)

C1A47

After system returns to normal, engine switch is turned off and then on (IG)

C1A4B

System returns to normal

C1A50

System returns to normal

C1A63

System returns to normal

C1A64

After system returns to normal, engine switch is turned off and then on (IG)

C1AA0

After system returns to normal, engine switch is turned off and then on (IG)

C1AA9

After system returns to normal, engine switch is turned off and then on (IG)

C1AAE

After system returns to normal, engine switch is turned off and then on (IG)

U0100

System returns to normal

U0125

System returns to normal

U0126

System returns to normal

U0129

System returns to normal

U0155

System returns to normal

U0235

System returns to normal

U023A

System returns to normal

U1002

System returns to normal

U1104

System returns to normal

"Pre-Collision System Unavailable"

  • Millimeter wave radar sensor assembly misaligned
  • Millimeter wave radar sensor assembly temperature malfunction
  • Millimeter wave radar sensor assembly low voltage malfunction
  • Millimeter wave radar sensor assembly beam axis adjustment is completed and beam axis learning is completed
  • Millimeter wave radar sensor assembly temperature returns to normal
  • Millimeter wave radar sensor assembly voltage returns to normal

"Pre-Collision System Unavailable Clean Sensor"

Foreign matter attached to millimeter wave radar sensor assembly

Millimeter wave radar sensor assembly is cleaned

"Front Camera Unavailable"

Forward recognition camera temporarily malfunctioning

  • Abnormal forward recognition camera voltage
  • Forward recognition camera temperature outside of operational range
  • Other forward recognition camera malfunction
  • Forward recognition camera temperature returns to normal
  • Forward recognition camera voltage returns to normal
  • Forward recognition camera returns to normal

"Front Camera Unavailable Remove Debris On Windshield"

Front of forward recognition camera or windshield glass is dirty or misty

Forward recognition camera or area of windshield glass in front of forward recognition camera is cleaned

    Dtc Check / Clear

    Freeze Frame Data

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