Key Cannot be Registered [08/2015 - ]: Procedure

1. Check that the system enters registration mode. Refer to REGISTRATION [08/2015 - ] .

   OK

   System enters registration mode.

NG → See step   5 

OK: Go to next step 

1. In registration mode, insert the door control transmitter assembly 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 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. The output details are shown in the following illustration.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Security Indicator Light	*b	Normal (Immobilizer system is operating normally)
   *c	Code 2-1	*d	Code 2-2
   *e	Code 2-3	-	-

   Result

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

B → See step   3 

A → END (REGISTERED DOOR CONTROL TRANSMITTER ASSEMBLY WAS USED) 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Immobilizer / Data List.
5. Read the Data List according to the display on the Techstream.

   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 keys displayed	-
   Transponder M-code	Number of registered master key/min. 0, max. 15	Number of registered master keys displayed	-

   Result

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

B → KEY REGISTRATION (SUB-KEY) 

C → KEY REGISTRATION (MASTER KEY) 

D → MAXIMUM NUMBER OF DOOR CONTROL TRANSMITTER ASSEMBLIES ALREADY REGISTERED 

A: Go to next step 

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

   Number of Door control transmitter assemblies Registered (Master and Sub	Proceed to
   0	New key ID code registration
   1 to 7	Additional key ID code registration

2. Check if an additional door control transmitter assembly can be registered.

   OK

   Additional door control transmitter assembly can be registered.

NG → REPLACE TRANSPONDER KEY ECU ASSEMBLY 

OK → END (DOOR CONTROL TRANSMITTER ASSEMBLY MALFUNCTION) 

1. Remove the unlock warning switch assembly. Refer to REMOVAL [08/2015 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Pushed (Key set)	Below 1 Ω
   1 - 2	Free (Key removed)	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Unlock Warning Switch Assembly)
   *b	Free
   *c	Pushed

NG → See step   7 

OK: Go to next step 

1. Disconnect the I19 transponder key ECU assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-3 (KSW) - I33-1 (UN+)	Always	Below 1 Ω
   I19-3 (KSW) or I33-1 (UN+) - Body ground	Always	10 kΩ or higher
   I33-2 (UN-) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE TRANSPONDER KEY ECU ASSEMBLY