Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Smart Key System(for Start Function, Hv Model)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System(for Start Function, Hv Model)

Additional Key cannot be Registered
Open in Front Floor Electrical Key Oscillator Circuit (B27A5)
Open in Rear Floor Electrical Key Oscillator Circuit (B27A6)
System Voltage or GND Energization Malfunction (B228B)
Short to GND in Immobiliser System Power Source Circuit (B278A)
Malfunction of ID-BOX Recognition (B278D)
Engine Immobiliser System Circuit Short to Battery (B279A12)
Engine Immobiliser System Incorrect Assembly (B279C95)
Ignition Hold Monitor Malfunction (B2271)
ACC Monitor Malfunction (B2274)
STSW Monitor Malfunction (B2275)
Detecting Vehicle Submersion (B2277)
Engine/Power Switch Malfunction (B2278)
Vehicle Speed Signal Malfunction (B2282,B2283)
Brake Signal Malfunction (B2284)
Steering Lock Position Signal Circuit Malfunction (B2285)
Engine Starter Communication Malfunction (B2779)
Open / Short in Steering Lock ECU (B2781)
Power Source Control ECU Malfunction (B2782)
Antenna Coil Open / Short (B2784)
IG2 Signal Malfunction (B2788)
Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid (B279986)
Check For Intermittent Problems
Customer Problem Analysis Check
Customize Parameters
Data List / Active Test
Diagnostic Trouble Code Chart
Dtc Check / Clear
How To Proceed With Troubleshooting
Immobiliser System does not Operate Properly
New Key cannot be Registered
New Key Registration Warning Message is not Displayed
Operation Check
Parts Location
Power Source Mode does not Change to ON (ACC)
Power Source Mode does not Change to ON (IG and ACC)
Power Source Mode does not Change to ON (IG)
Power Source Mode does not Change to ON (READY)
Precaution
Problem Symptoms Table
Registration
Security Indicator Light Does not Blink
Steering Lock does not Lock
System Diagram
Terminals Of Ecu
Lost Communication with ECM / PCM (U0100,U0140,U0142,U0155,U0293)
Unable to Unlock Steering Wheel (Hybrid Control System cannot Start)

Unable to Unlock Steering Wheel (Engine cannot Start)

Additional Key cannot be Registered

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: VC Output Circuit
DESCRIPTION The ECM constantly generates a 5 V power source voltage from the auxiliary battery voltage supplied to the +B, +B2 (BATT) terminals to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit. When the VC circuit has a short circuit, the m ...

Toyota Avalon (XX50) 2019-2022 Owners Manual

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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