DTC B279A: Theft Deterrent System Communication Line High Fixation [08/2015 - ]: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

NEXT: Go to next step 

1. Perform "DTC Output Confirmation Operation" procedure.
2. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   OK

   DTC B279A is not output.

   Result

   Result	Proceed to
   DTC B279A is output	A
   DTC B279A is not output	B

B → See step   9 

A: Go to next step 

1. Check that the connectors are properly connected to the ECM and transponder key ECU assembly.

   OK

   Connectors are properly connected.

NG → CONNECT CONNECTORS PROPERLY 

OK: Go to next step 

1. Disconnect the I19 transponder key ECU assembly connector.
2. Disconnect the A25 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-13 (EFIO) - A25-28 (IMI)	Always	Below 1 Ω
   I19-13 (EFIO) or A25-28 (IMI) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the transponder key ECU assembly with a new one. Refer to REMOVAL [08/2015 - ] .
   NOTE:

   Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Registration. Refer to REGISTRATION [08/2015 - ] .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

NEXT: Go to next step 

1. Perform "DTC Output Confirmation Operation" procedure.
2. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   OK

   DTC B279A is not output.

   Result

   Result	Proceed to
   DTC B279A is not output	A
   DTC B279A is output	B

B → See step   8 

A → END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)