Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012VSY
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): Security Indicator Light Does not Blink; 2018 - 2024 MY Camry [03/2017 -        ]

Security Indicator Light Does not Blink

DESCRIPTION

  • The certification ECU (smart key ECU assembly) blinks the security indicator light (telltale light assembly) when the immobiliser is set (engine switch off).
  • The certification ECU (smart key ECU assembly) receives the security indicator light signal from the main body ECU (multiplex network body ECU) via CAN communication when the theft deterrent system is in the arming preparation state or alarm sounding state. Then, the certification ECU (smart key ECU assembly) blinks the security indicator light (telltale light assembly).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here 2018 - 2022 MY Camry [03/2017 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING

  • Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Registration.

    Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2020 - 2022 MY Camry [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Powertrain > Engine > Trouble Codes

OK:

DTCs are not output.

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART 2018 MY Camry [03/2017 - 06/2017]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): DIAGNOSTIC TROUBLE CODE CHART 2018 - 2019 MY Camry [06/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): DIAGNOSTIC TROUBLE CODE CHART 2020 - 2021 MY Camry [09/2019 - 08/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Camry [08/2021 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): DIAGNOSTIC TROUBLE CODE CHART 2023 - 2024 MY Camry [08/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): DIAGNOSTIC TROUBLE CODE CHART

OK

2.

PERFORM ACTIVE TEST USING TECHSTREAM (IMMOBILISER INDICATOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Smart Key > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Immobiliser Indicator

Security indicator light

OFF/ON

-

Body Electrical > Smart Key > Active Test

Tester Display

Immobiliser Indicator

OK:

The security indicator light (radio receiver assembly) operates normally.

NG

GO TO STEP 4

OK

3.

CHECK SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) OPERATION

(a) When the immobiliser is set, check that the security indicator light (telltale light assembly) blinks.*1

OK:

The security indicator light (telltale light assembly) blinks normally.

(b) When the theft deterrent system is in the arming preparation state, check that the security indicator light (telltale light assembly) illuminates.*2

OK:

The security indicator light (telltale light assembly) illuminates normally.

Result

Proceed to

*1 is NG (*2 is OK)

A

*2 is NG (*1 is OK)

B

A

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2018 MY Camry [03/2017 - 06/2017]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

B

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 2018 MY Camry [03/2017 - 06/2017]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL

4.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) AND BODY GROUND)

(a) Disconnect the K62 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the K36 security indicator light (telltale light assembly) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K62-20 (IND) - K36-9 (LP)

Always

Below 1 Ω

K62-20 (IND) or K36-9 (LP) - Other terminals and body ground

Always

10 kΩ or higher

K36-6 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Connect the K62 certification ECU (smart key ECU assembly) connector.

(b) Connect the K36 security indicator light (telltale light assembly) connector.

(c) Using an oscilloscope, check the waveform.

*a

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

-

-

Measurement Condition:

Tester Connection

Condition

Specified Condition

K62-20 (IND) - Body ground

Engine switch off → on (IG)

Pulse generation → Below 2 V

OK

REPLACE SECURITY INDICATOR LIGHT (TELLTALE LIGHT ASSEMBLY) 2018 - 2020 MY Camry [03/2017 - 10/2020]; THEFT DETERRENT / KEYLESS ENTRY: SECURITY INDICATOR LIGHT ASSEMBLY: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SECURITY INDICATOR LIGHT ASSEMBLY: REMOVAL

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2018 MY Camry [03/2017 - 06/2017]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL