OK -- Continue to next step.
4. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Front Floor)
(a) Replace the indoor electrical key oscillator (for front floor) See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Electrical Key Oscillator (for Front Floor)/Removal.
NEXT -- Continue to next step.
5. CHECK DTC OUTPUT
(a) Clear the DTCs See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes/Smart Access System With Push-Button Start (for Entry Function).
(b) Recheck for DTCs.
OK:
DTC B27A5 is not output.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See: Accessories and Optional
Equipment/Antitheft and Alarm Systems/Alarm Module/Service and Repair/Removal
OK -- END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)
Up to 08/2009
THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): B27A6:
Open in Rear Floor Electrical Key Oscillator Circuit
B27A6 - Open in Rear Floor Electrical Key Oscillator Circuit
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and sends it to the indoor electrical key oscillator (for center floor). To
detect the key inside the cabin, the indoor electrical key oscillator (for center floor) creates a detection area in the cabin.
DTC B27A6 is detected by the certification ECU (smart key ECU assembly) when an open circuit occurs between the certification ECU (smart key
ECU assembly) and indoor electrical key oscillator (for center floor) terminals (between CLG6 and CLG4, or CG6B and CLGB).
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
The smart access system with push-button start (for entry function) uses a multiplex communication system (LIN communication
system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting
See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Initial Inspection and Diagnostic
Overview/Smart Access System With Push-Button Start (for Entry Function)/How To Proceed With Troubleshooting.
Troubleshoot the smart access system with push-button start (for entry function) after confirming that the communication system
is functioning properly.
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