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.
PROCEDURE
1. CHECK CONNECTOR CONNECTION CONDITION
(a) Turn the engine switch off.
(b) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and the indoor electrical key
oscillator (for center floor).
OK:
Connectors are properly connected.
NG -- CONNECT CONNECTORS PROPERLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR ELECTRICAL KEY OSCILLATOR)
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Disconnect the indoor electrical key oscillator (for center floor) connector.
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