DTC B27A8: Open in Outside Luggage Compartment Electrical Key Antenna Circuit: Procedure

1. Turn the power switch off.
2. Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and electrical key antenna (outside luggage).

   OK

   Connectors are properly connected.

NG → CONNECT CONNECTORS PROPERLY 

OK: Go to next step 

1. Disconnect the C20 and C19 certification ECU (smart key ECU assembly) connectors.
2. Disconnect the G29 electrical key antenna (outside luggage) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C20-19 (CLG8) - G29-1 (ANTE8)	Always	Below 1 Ω
   C20-20 (CG8B) - G29-2 (CLGB)	Always	Below 1 Ω
   C19-15 (E) - Body ground	Always	Below 1 Ω
   C20-19 (CLG8) or G29-1 (ANTE8) - Body ground	Always	10 kΩ or higher
   C20-20 (CG8B) or G29-2 (CLGB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the electrical key antenna (outside luggage). Refer to REMOVAL .
2. Inspect the electrical key antenna (outside luggage). Refer to INSPECTION .

NG → See step   7 

OK: Go to next step 

1. Replace the certification ECU (smart key ECU assembly) with a new one. Refer to REMOVAL .

NEXT: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Check for DTCs. Refer to DTC CHECK / CLEAR .

   OK

   DTC B27A8 is not output.

NG → See step   7 

OK → END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)