Security Indicator Light Does not Blink [08/2015 - ]: Procedure

1. Check the vehicle specification.

   Result

   Result	Proceed to
   w/o Theft Deterrent System	A
   w/ Theft Deterrent System	B

B → See step   5 

A: Go to next step 

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 / Active Test.
5. Perform the Active Test according to the display on the Techstream.
   IMMOBILIZER (TRANSPONDER KEY ECU ASSEMBLY)
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Security Indicator	Security indicator light	ON/OFF	-

   OK

   The security indicator light operates normally by using the Active Test.

NG → See step   3 

OK → See step   13 

1. Disconnect the security indicator light (air conditioning control assembly) connector.
2. Disconnect the transponder key ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-8 (IND) - I56-1 (LP)	Always	Below 1 Ω
   I19-8 (IND) - Body ground	Always	10 kΩ or higher
   I56-6 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the transponder key ECU assembly connector.
2. Measure the voltage and check the pulse according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   I56-1 (LP) - Body ground	No key in ignition key cylinder (engine immobilizer system set)	Pulse generation
   I56-1 (LP) - Body ground	Key in ignition key cylinder (engine immobilizer system unset)	Below 1 V

NG → See step   13 

OK → See step   15 

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 or Main Body / Active Test.
5. Perform the Active Test according to the display on the Techstream.
   IMMOBILIZER (TRANSPONDER KEY ECU ASSEMBLY)
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Security Indicator	Security indicator light	ON/OFF	-

   MAIN BODY (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Security Indicator	Security indicator light	OFF/ON	-

   Result

   Result	Proceed to
   Security indicator light operation is normal when performing the "Main Body" and "Immobilizer" Active Test	A
   Security indicator light operation is not normal when performing the "Immobilizer" Active Test Security indicator light operation is normal when performing the "Main Body" Active Test	B
   Security indicator light operation is normal when performing the "Immobilizer" Active Test Security indicator light operation is not normal when performing the "Main Body" Active Test	C
   Security indicator light operation is not normal when performing the "Main Body" and "Immobilizer" Active Test	D

B → See step   7 

C → See step   8 

D → See step   9 

A: Go to next step 

1. When the immobilizer is set, check that the security indicator light blinks.*1

   OK

   The security indicator light blinks normally.

2. When the theft deterrent system is in the arming preparation state, check that the security indicator light on. Refer to SYSTEM DESCRIPTION [08/2015 - ] .*2

   OK

   The security indicator light is on normally.

   Result

   Result	Proceed to
   Both *1 and *2 are OK	A
   *1 is NG (*2 is OK)	B
   *2 is NG (*1 is OK)	C
   Both *1 and *2 are NG	D

B → See step   13 

C → See step   14 

D → See step   15 

A → See step   12 

1. Disconnect the security indicator light (air conditioning control assembly) connector.
2. Disconnect the transponder key ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-8 (IND) - I56-1 (LP)	Always	Below 1 Ω
   I19-8 (IND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   13 

1. Disconnect the security indicator light (air conditioning control assembly) connector.
2. Disconnect the main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I12-22 (IND) - I56-1 (LP)	Always	Below 1 Ω
   I12-22 (IND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   14 

1. Disconnect the security indicator light (air conditioning control assembly) connector.
2. Disconnect transponder key ECU assembly connector.
3. Disconnect the main body ECU (multiplex network body ECU) connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-8 (IND) - I56-1 (LP)	Always	Below 1 Ω
   I12-22 (IND) - I56-1 (LP)	Always	Below 1 Ω
   I56-1 (LP) - Body ground	Always	10 kΩ or higher
   I56-6 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Temporarily replace the security indicator light (air conditioning control assembly) with a new or known good one. Refer to REMOVAL [08/2015 - ] .
2. When the immobilizer is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

   OK

   Security indicator light blinks.

NG → See step   11 

OK → END (AIR CONDITIONING CONTROL ASSEMBLY WAS DEFECTIVE) 

1. Temporarily replace the transponder key ECU assembly with a new or known good one. Refer to REMOVAL [08/2015 - ] .
2. When the immobilizer is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

   OK

   Security indicator light blinks.

NG → See step   14 

OK → END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)