DTC B27A2: Open in Front Passenger Side Electrical Antenna Circuit [08/2015 - 08/2019]: Procedure

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

   OK

   Connectors are properly connected.

Result: 

NG 

CONNECT CONNECTORS PROPERLY 

Result: 

OK 

See step  2

1. Disconnect the G26 certification ECU connector.
2. Disconnect the N1 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
   G26-5 (CLG2) - N1-6 (ANT1)	Always	Below 1 Ω
   G26-6 (CG2B) - N1-3 (ANT2)	Always	Below 1 Ω
   G26-15 (E) - Body ground	Always	Below 1 Ω
   N1-2 (GND) - Body ground	Always	Below 1 Ω
   G26-5 (CLG2) or N1-6 (ANT1) - Body ground	Always	10 kΩ or higher
   G26-6 (CG2B) or N1-3 (ANT2) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Connect the G26 certification ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Waveform 1	*2	Waveform 2
   *a	Component with harness connected (Certification ECU)	-	-

2. Connect the N1 front door outside handle assembly RH connector.
3. Using an oscilloscope, check the waveform.

   OK

   Tester Connection	Switch Condition	Tool Setting	Specified Condition
   G26-5 (CLG2) - G26-15 (E)	Procedure: Engine switch off Key brought outside vehicle All doors closed Key not inside vehicle Key brought inside detection area*1 All doors locked through wireless operation	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 1)
   G26-5 (CLG2) - G26-15 (E)	Procedure: Engine switch off Key brought outside vehicle All doors closed Key not inside vehicle Key brought outside detection area*2 All doors locked through wireless operation	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 2)
   G26-6 (CG2B) - G26-15 (E)	Procedure: Engine switch off Key brought outside vehicle All doors closed Key not inside vehicle All doors locked with key	2 V/DIV., 500 ms/DIV.	Pulse generation (See waveform 2)

   1. *1: For details about the areas that are inside the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 08/2016] , or refer to OPERATION CHECK [08/2016 - 08/2019] ).
   2. *2: For details about the areas that are outside the entry function detection area, refer to Operation Check (Refer to OPERATION CHECK [08/2015 - 08/2016] , or refer to OPERATION CHECK [08/2016 - 08/2019] ).

Result: 

NG 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )

Result: 

OK 

See step  4

1. Temporarily replace the front door outside handle assembly RH with a new or normally functioning one (Refer to DISASSEMBLY [08/2015 - ] ).

Result: 

NEXT 

See step  5

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).

Result: 

NEXT 

See step  6

1. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).

   OK

   DTC B27A2 is not output.

Result: 

OK 

END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY RH IS DEFECTIVE) 

Result: 

NG 

REPLACE CERTIFICATION ECU 

(Refer to REMOVAL [08/2015 - 08/2019] )