RM38T0EC _58 Vehicle Interior _115230 THEFT DETERRENT / KEYLESS ENTRY _0606512 SMART ENTRY AND START SYSTEM(for Start Function, HEV Model) C

THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, HEV Model) B27A713 Rear Floor 2 Electrical Key Oscillator Circuit Open

DESCRIPTION

The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the No. 3 indoor electrical key antenna assembly (inside luggage compartment). For the No. 3 indoor electrical key antenna assembly (inside luggage compartment) to detect when the electrical key transmitter sub-assembly is in the cabin, the signal from the certification ECU (smart key ECU assembly) requesting a response from the electrical key transmitter sub-assembly is transmitted inside the vehicle. DTC B27A713 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and No. 3 indoor electrical key antenna assembly (inside luggage compartment) (between terminals CLG7 and ANTE7, or terminals CG7B and CLGB).

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B27A713	Rear Floor 2 Electrical Key Oscillator Circuit Open	An open is detected in the circuit between the certification ECU (smart key ECU assembly) and No. 3 indoor electrical key antenna assembly (inside luggage compartment) (CLG7 - ANTE7, CG7B - CLGB) (1 trip detection logic*).	· Certification ECU (smart key ECU assembly) · No. 3 indoor electrical key antenna assembly (inside luggage compartment) · Harness or connector	DTC Output Confirmation Operation: Any time

*: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected	Fail-safe Operation when Malfunction Detected
When electrical key transmitter sub-assembly is in rear floor: · Power source mode does not charge when power switch pressed · Electrical key transmitter sub-assembly locked inside vehicle	-

Related Data List and Active Test
DTC No.	Data List and Active Test
B27A713	Key diagnostic mode can be used to perform troubleshooting

WIRING DIAGRAM

1.219,0.76 1.833,0.958 0.615,0.198 10 false ANTE7 1.292,1.906 1.906,2.104 0.615,0.198 10 false CLGB 1.76,0.75 1.917,0.948 0.156,0.198 10 false 1 1.76,1.906 1.917,2.104 0.156,0.198 10 false 2 0.406,2.531 0.823,2.75 0.417,0.219 10 false O40 0.406,2.698 3.281,3.448 2.875,0.75 10 false No. 3 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment) 4.979,0.667 5.292,0.865 0.313,0.198 10 false 10 5.031,1.802 5.344,2 0.313,0.198 10 false 9 5.292,0.76 5.906,0.958 0.615,0.198 10 false CLG7 4.885,0.854 5.344,1.052 0.458,0.198 10 false O200 4.885,2 5.344,2.198 0.458,0.198 10 false O200 6.49,2.01 6.948,2.208 0.458,0.198 10 false I222 6.542,1.823 6.854,2.021 0.313,0.198 10 false 29 6.271,2.031 6.427,2.229 0.156,0.198 10 false E 5.302,1.917 5.917,2.115 0.615,0.198 10 false CG7B 5.833,1.458 6.146,1.656 0.313,0.198 10 false IC 5.083,2.552 6.604,3.094 1.521,0.542 10 false Certification ECU (Smart Key ECU Assembly)

CAUTION / NOTICE / HINT

NOTICE:: ·

The smart entry and start system (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Entry Function) after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING202307,999999,_58,_115230,_0606512,RM100000002C24Z,

·

When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

·

After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.CHECK CONNECTOR CONNECTION

Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and No. 3 indoor electrical key antenna assembly (inside luggage compartment).

OK:: Connectors are properly connected.

Result:

Proceed to
OK
NG

2.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

CONNECT CONNECTORS PROPERLY

2.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

Disconnect the O200 certification ECU (smart key ECU assembly) connector.

Disconnect the O40 No. 3 indoor electrical key antenna assembly (inside luggage compartment) connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
O200-10 (CLG7) - O40-1 (ANTE7)	Always	Below 1 Ω
O200-9 (CG7B) - O40-2 (CLGB)	Always	Below 1 Ω

Result:

Proceed to
OK
NG

Reconnect the O200 certification ECU (smart key ECU assembly) connector.

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

Using an oscilloscope, check the waveform.

3.333,0.417 3.833,0.667 0.5,0.25 4.698,0.406 5.198,0.656 0.5,0.25 5.375,2.49 5.198,2.49 5.198,2.49 4.583,1.26 true 3.281,2.479 3.51,2.479 3.51,2.479 3.771,1.167 true 2.99,2.302 3.219,2.302 3.219,2.302 3.688,1.167 true 0.156,0.167 0.469,0.323 0.313,0.156 10 false *a 2.438,3.115 2.75,3.271 0.313,0.156 10 false *b 3.104,4.427 3.417,4.583 0.313,0.156 10 false *c 2.354,3.698 3.042,4.042 0.688,0.344 10 false GND 4.208,4.438 4.521,4.594 0.313,0.156 10 false *d 2.854,2.396 3.542,2.74 0.688,0.344 10 false CG7B 2.583,2.219 3.271,2.563 0.688,0.344 10 false CLG7 5.427,2.417 6.115,2.76 0.688,0.344 10 false E 3.427,0.448 4.115,0.792 0.688,0.344 10 false O200 4.823,0.438 5.51,0.781 0.688,0.344 10 false I222

*a	Component with harness connected (Certification ECU (Smart Key ECU Assembly))	*b	Waveform
*c	For 30 seconds after any door closed	*d	After 30 seconds or more have elapsed since any door closed

OK:

Tester Connection	Condition	Tool Setting	Specified Condition
O200-10 (CLG7) - I222-29 (E)	Procedure: 1. Ignition switch off 2. Electrical key transmitter sub-assembly not inside vehicle 3. Within 30 seconds of closing any door	5 V/DIV., 500 ms./DIV.	Pulse generation (See waveform)
O200-9 (CG7B) - I222-29 (E)	Procedure: 1. Ignition switch off 2. Electrical key transmitter sub-assembly not inside vehicle 3. Within 30 seconds of closing any door	5 V/DIV., 500 ms./DIV.	Pulse generation (See waveform)

Result:

Proceed to
OK
NG

REPLACE NO. 3 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (INSIDE LUGGAGE COMPARTMENT)

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REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)