DTC B27A2: Open in Front Passenger Side Electrical Antenna Circuit: Procedure

1. Turn the engine switch off.
2. Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and the front door outside handle assembly RH.

   OK

   Connectors are properly connected.

NG → CONNECT CONNECTORS PROPERLY 

OK: Go to next step 

1. Disconnect the D41 and D48 certification ECU (smart key ECU assembly) connectors.
2. Disconnect the F5 front door outside handle assembly RH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D41-11 (CLG2) - F5-6 (ANT1)	Always	Below 1 Ω
   D41-10 (CG2B) - F5-3 (ANT2)	Always	Below 1 Ω
   D48-11 (GND) - Body ground	Always	Below 1 Ω
   D41-11 (CLG2) or F5-6 (ANT1) - Body ground	Always	10 kΩ or higher
   D41-10 (CG2B) or F5-3 (ANT2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

Fig 1: Inspecting Certification ECU (Smart Key ECU Assembly) (Output To Front Passenger Side Electrical Key Antenna) With Waveforms

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Reconnect the D41 and D48 certification ECU (smart key ECU assembly) connector.
2. Reconnect the F5 front door outside handle assembly RH connector.
3. Using an oscilloscope, check the waveform.

   HINT: 

   Check that the entry cancel function, which is one of the customizing settings of the smart key system, is not set. Refer to CUSTOMIZE PARAMETERS [05/2013 - ] .

   OK

   Tester Connection	Switch Condition	Tool Setting	Specified Condition
   D41-11 (CLG2) - D48-11 (GND)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Electrical key transmitter not inside vehicle Electrical key transmitter brought inside detection area*1 All doors locked through wireless operation	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
   D41-11 (CLG2) - D48-11 (GND)	Procedure: Engine switch off Electrical key transmitter sub-assembly brought outside vehicle All doors closed Electrical key transmitter not inside vehicle Electrical key transmitter brought outside detection area*2 All doors locked through wireless operation	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
   D41-10 (CG2B) - D48-11 (GND)	Procedure: Engine switch off Electrical key transmitter brought outside vehicle All doors closed Electrical key transmitter sub-assembly not inside vehicle All doors locked with electrical key transmitter sub-assembly	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 2)

   • *1: For details about the areas that are inside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK [05/2013 - ] .
   • *2: For details about the areas that are outside the entry function detection area, refer to Operation Check. Refer to OPERATION CHECK [05/2013 - ] .

NG → See step   6 

OK: Go to next step 

1. Temporarily replace the front door outside handle assembly RH with a new or normally functioning one. Refer to DISASSEMBLY [05/2013 - ] .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [05/2013 - ] .
2. Recheck for DTCs. Refer to DTC CHECK / CLEAR [05/2013 - ] .

   OK

   DTC B27A2 is not output.

NG → See step   6 

OK → END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH WAS DEFECTIVE)