Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GV83
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [01/2019 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): Key Cannot be Registered; 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022]

Key Cannot be Registered

DESCRIPTION

A maximum of 5 key ID codes can be registered.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the transponder key ECU assembly is replaced, refer to Registration.

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PROCEDURE

1.

CHECK REGISTRATION MODE

(a) Check that the system enters registration mode.

OK:

System enters registration mode.

NG

GO TO STEP 5

OK

2.

CHECK SECURITY INDICATOR LIGHT (COMBINATION METER ASSEMBLY) OPERATION

(a) In registration mode, insert the door control transmitter assembly into the ignition key cylinder and check the security indicator light (combination meter assembly).

HINT:

If the new key ID code registration fails, code 2-1 will be output through the security light. Trying to re-register an already registered door control transmitter assembly will cause code 2-2 to be output when the door control transmitter assembly is inserted. If the number of registered key ID codes exceeds the maximum limit, code 2-3 will be output through the security indicator light (combination meter assembly). The output details are shown in the following illustration.

*a

Security Indicator Light (Combination Meter Assembly)

*b

Normal (Immobiliser system is operating normally)

*c

Code 2-1

*d

Code 2-2

*e

Code 2-3

-

-

Result

Proceed to

Code 2-1 or Code 2-3 is output

A

Code 2-2 is output

B

B

END (REGISTERED DOOR CONTROL TRANSMITTER ASSEMBLY WAS USED)

A

3.

READ VALUE USING TECHSTREAM (TRANSPONDER M-CODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Immobiliser / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Immobiliser > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Transponder M-code

Number of registered master key

min. 0, max. 15

Number of registered master keys displayed

-

Body Electrical > Immobiliser > Data List

Tester Display

Transponder M-code

Result

Proceed to

5 is displayed for "Transponder M-code"

A

Values are other than above

B

A

MAXIMUM NUMBER OF DOOR CONTROL TRANSMITTER ASSEMBLIES ALREADY REGISTERED

B

4.

KEY REGISTRATION

(a) Refer to the table below to determine if additional door control transmitter assemblies can be registered.

Number of Door Control Transmitter Assemblies Registered

Proceed to

0

New key ID code registration

1 to 5

Additional key ID code registration

(b) Check if an additional door control transmitter assembly can be registered.

OK:

Additional door control transmitter assembly can be registered.

OK

END (DOOR CONTROL TRANSMITTER ASSEMBLY MALFUNCTION)

NG

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5.

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

(a) Remove the unlock warning switch assembly.

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(b) Inspect the unlock warning switch assembly.

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NG

REPLACE UNLOCK WARNING SWITCH ASSEMBLY

OK

6.

CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - UNLOCK WARNING SWITCH ASSEMBLY)

(a) Disconnect the I67 transponder key ECU assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I13-1 - I67-5 (KSW)

Always

Below 1 Ω

I13-2 - Body ground

Always

Below 1 Ω

I13-1 or I67-5 (KSW) - Other terminals and body ground

Always

10 kΩ or higher

OK

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NG

REPAIR OR REPLACE HARNESS OR CONNECTOR