RM3660EC _58 Vehicle Interior _080747 THEFT DETERRENT / KEYLESS ENTRY _0600572 SMART ENTRY AND START SYSTEM(for Entry Function (except NR Series)) C

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Entry Function (except NR Series))  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 and the ignition switch is ON.


Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Operation when Malfunction Detected
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

for M20C-FKS


B651190E14
1.208,0.75 1.688,0.938 0.479,0.188 10 false ANTE7 1.281,1.896 1.688,2.063 0.406,0.167 10 false CLGB 4.885,0.854 5.271,1.063 0.385,0.208 10 false O174 4.896,2 5.271,2.198 0.375,0.198 10 false O174 5.302,0.729 5.698,0.906 0.396,0.177 10 false CLG7 5.292,1.896 5.708,2.073 0.417,0.177 10 false CG7B 5.844,1.375 6.052,1.542 0.208,0.167 10 false IC 6.281,1.99 6.438,2.156 0.156,0.167 10 false E 6.49,2 6.792,2.167 0.302,0.167 10 false I196 1.771,0.75 1.896,0.917 0.125,0.167 10 false 1 1.76,1.896 1.885,2.063 0.125,0.167 10 false 2 4.969,0.656 5.188,0.833 0.219,0.177 10 false 10 5.01,1.781 5.135,1.969 0.125,0.188 10 false 9 0.375,2.552 3.219,2.927 2.844,0.375 10 false No. 3 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment) 0.375,2.396 0.667,2.563 0.292,0.167 10 false O40 5.01,2.552 6.531,2.979 1.521,0.427 10 false Certification ECU (Smart Key ECU Assembly) 6.542,1.802 6.76,1.979 0.219,0.177 10 false 29


except M20C-FKS


B651190E13
1.208,0.75 1.688,0.938 0.479,0.188 10 false ANTE7 1.281,1.896 1.688,2.063 0.406,0.167 10 false CLGB 4.885,0.854 5.271,1.063 0.385,0.208 10 false O174 4.896,2 5.271,2.198 0.375,0.198 10 false O174 5.302,0.729 5.698,0.906 0.396,0.177 10 false CLG7 5.292,1.896 5.708,2.073 0.417,0.177 10 false CG7B 5.844,1.375 6.052,1.542 0.208,0.167 10 false IC 6.281,1.99 6.438,2.156 0.156,0.167 10 false E 6.49,2 6.792,2.167 0.302,0.167 10 false I196 1.771,0.75 1.896,0.917 0.125,0.167 10 false 1 1.76,1.896 1.885,2.063 0.125,0.167 10 false 2 4.969,0.656 5.188,0.833 0.219,0.177 10 false 10 5.01,1.781 5.135,1.969 0.125,0.188 10 false 9 0.375,2.552 3.219,2.927 2.844,0.375 10 false No. 3 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment) 0.344,2.396 0.74,2.635 0.396,0.24 10 false O186 5.01,2.552 6.531,2.979 1.521,0.427 10 false Certification ECU (Smart Key ECU Assembly) 6.542,1.802 6.76,1.979 0.219,0.177 10 false 29


CAUTION / NOTICE / HINT

NOTICE:
·

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.

·

The smart entry and start system (for Entry Function) uses the 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 Entry Function (except NR Series))>HOW TO PROCEED WITH TROUBLESHOOTING

·

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
a.

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



OK

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

NG

CONNECT CONNECTORS PROPERLY

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

Disconnect the O174 certification ECU (smart key ECU assembly) connector.


b.

Disconnect the O40*1 or I186*2 No. 3 indoor electrical key antenna assembly (inside luggage compartment) connector.

*1: for M20C-FKS

*2: except M20C-FKS



c.

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

Standard Resistance:
for M20C-FKS:
Tester Connection Condition Specified Condition
O174-10 (CLG7) - O40-1 (ANTE7) Always Below 1 Ω
O174-9 (CG7B) - O40-2 (CLGB) Always Below 1 Ω

except M20C-FKS:
Tester Connection Condition Specified Condition
O174-10 (CLG7) - I186-1 (ANTE7) Always Below 1 Ω
O174-9 (CG7B) - I186-2 (CLGB) Always Below 1 Ω



d.

Reconnect the O174 certification ECU (smart key ECU assembly) connector.


Result:
Proceed to
OK
NG



OK

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO ELECTRICAL KEY ANTENNA (OUTSIDE LUGGAGE COMPARTMENT))
B660442C03
4.781,0.396 5.135,0.625 0.354,0.229 3.427,0.396 3.781,0.625 0.354,0.229 3.26,2.365 3.688,1.188 true 3.906,2.365 3.781,1.188 true 4.615,2.26 4.604,1.271 true 4.833,0.406 5.167,0.604 0.333,0.198 10 false I196 3.438,0.406 3.813,0.615 0.375,0.208 10 false O174 4.573,2.24 4.708,2.427 0.135,0.188 10 false E 3.083,2.333 3.469,2.51 0.385,0.177 10 false CLG7 3.719,2.344 4.135,2.521 0.417,0.177 10 false CG7B 0.823,3.552 1.281,3.75 0.458,0.198 10 false *b 0.281,0.125 0.74,0.323 0.458,0.198 10 false *a
*a Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) 		*b Waveform 1


a.

Using an oscilloscope, check the waveform.

OK:
Tester Connection Condition Tool Setting Specified Condition
O174-10 (CLG7) - I196-29 (E) Procedure:
1.

Door is closed

2.

Ignition switch off

3.

Electrical key transmitter sub-assembly not inside vehicle

4.

Driver door lock sensor touched


2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform 1)
O174-9 (CG7B) - I196-29 (E) Procedure:
1.

Door is closed

2.

Ignition switch off

3.

Electrical key transmitter sub-assembly not inside vehicle

4.

Driver door lock sensor touched


2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform 1)



Result:
Proceed to
OK
NG



OK

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

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ELECTRICAL KEY OSCILLATOR (for Outside Luggage Compartment)>REMOVAL


NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)