Toyota CH-R Service Manual: Key Cannot be Registered

Toyota CH-R Service Manual / Theft Deterrent / Keyless Entry / Immobiliser System(w/o Smart Key System) / Key Cannot be Registered

DESCRIPTION

A maximum of 5 master key ID codes and 3 sub key ID codes can be registered.

WIRING DIAGRAM

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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.

GO TO STEP 5

2.	CHECK SECURITY INDICATOR LIGHT OPERATION

(a) In registration mode, insert the key into the ignition key cylinder and check the security indicator light.

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 key will cause code 2-2 to be output when the key 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. The output details are shown in the following illustration.

*1	Security Indicator Light	*2	Normal (Immobiliser system is operating normally)
*3	Code 2-1	*4	Code 2-2
*5	Code 2-3	-	-

Result	Proceed to
Code 2-1 or Code 2-3 is output	A
Code 2-2 is output	B

END (REGISTERED KEY WAS USED)

3.	READ VALUE USING TECHSTREAM (TRANSPONDER S-CODE, TRANSPONDER M-CODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to 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 S-code	Number of registered sub key	min. 0, max. 15	Number of registered sub key	-
Transponder M-code	Number of registered master key	min. 0, max. 15	Number of registered master key	-

Body Electrical > Immobiliser > Data List

Tester Display
Transponder S-code
Transponder M-code

Result	Proceed to
5 is displayed for "Transponder M-code" and 0 is displayed for "Transponder S-code"	A
0 is displayed for "Transponder M-code" and 3 is displayed for "Transponder S-code"	B
5 is displayed for "Transponder M-code" and 3 is displayed for "Transponder S-code"	C
Values are other than above	D

KEY REGISTRATION (SUB-KEY)

KEY REGISTRATION (MASTER KEY)

MAXIMUM NUMBER OF KEYS ALREADY REGISTERED

4.	KEY REGISTRATION

(a) Refer to the table below to determine if additional keys can be registered.

Number of Keys Registered (Master and Sub)	Proceed to
0	New key ID code registration
1 to 7	Additional key ID code registration

(b) Check if an additional key can be registered.

OK:

Additional key can be registered.

END (KEY MALFUNCTION)

REPLACE TRANSPONDER KEY ECU ASSEMBLY

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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REPLACE UNLOCK WARNING SWITCH ASSEMBLY

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

(a) Disconnect the F13 unlock warning switch assembly connector.

(b) Disconnect the F22 transponder key ECU assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F13-1 (UN+) - F22-3 (KSW)	Always	Below 1 Ω
F13-2 (UN-) - Body ground	Always	Below 1 Ω
F13-1 (UN+) - Body ground	Always	10 kΩ or higher
F22-3 (KSW) - Body ground	Always	10 kΩ or higher

REPLACE TRANSPONDER KEY ECU ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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