DTC Code | DTC Name |
---|---|
B27A8 | Open in Outside Luggage Compartment Electrical Key Antenna Circuit |
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and sends it to the outside electrical key oscillator (for rear side). To detect the key near the driver door, the outside electrical key oscillator (for rear side) creates a detection area towards the area approximately 1.0 m (3.28 ft.) from the back door.
DTC B27A8 is detected by the certification ECU (smart key ECU assembly) when an open circuit occurs between the certification ECU (smart key ECU assembly) and outside electrical key oscillator (for rear side) terminals (between CLG8 and CLG5, or CG8B and CLGB).
DTC No. | DTC Detection Condition | Trouble Area |
---|---|---|
B27A8 | Open circuit detected between the certification ECU (smart key ECU assembly and outside electrical key oscillator (for rear side) terminals (between CLG8 and CLG5, or CG8B and CLGB). |
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INSPECTION PROCEDURE
The entry and start system (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 (Click here). Troubleshoot the entry and start system (for entry function) after confirming that the communication system is functioning properly.
PROCEDURE
CHECK CONNECTOR CONNECTION CONDITION
Turn the engine switch off.
Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and the outside electrical key oscillator (for rear side).
OK |
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Connectors are properly connected. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - OUTSIDE ELECTRICAL KEY OSCILLATOR)
Disconnect the certification ECU (smart key ECU assembly) connector.
Disconnect the outside electrical key oscillator (for rear side) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||||||||
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*1 | Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
*2 | Front view of wire harness connector (to Outside Electrical Key Oscillator (for Rear Side)) |
INSPECT OUTSIDE ELECTRICAL KEY OSCILLATOR
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
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*1 | Component without harness connected (Outside Electrical Key Oscillator (for Rear Side)) |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
Replace the certification ECU (smart key ECU assembly).
CHECK DTC OUTPUT
Clear the DTCs (Click here).
Recheck for DTCs.
OK |
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DTC B27A8 is not output. |
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)
REPAIR OR REPLACE HARNESS OR CONNECTOR
REPLACE OUTSIDE ELECTRICAL KEY OSCILLATORClick here
CONNECT CONNECTORS PROPERLY