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)  B227511  Starter Circuit Short to Ground  B227512  Starter Circuit Short to Battery  


DESCRIPTION

This DTC is stored when a malfunction is detected in the starter circuit inside the certification ECU (smart key ECU assembly).

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B227511 Starter Circuit Short to Ground Certification ECU (smart key ECU assembly) internal HV activation request output circuit malfunction or external circuit malfunction (1-trip detection logic*)
·

Certification ECU (smart key ECU assembly)

·

Hybrid vehicle control ECU

·

Wire harness or connector


DTC Output Confirmation Operation:

Turn the ignition switch to ON and wait 10 seconds or more, then start the hybrid control system 3 times.


B227512 Starter Circuit Short to Battery Certification ECU (smart key ECU assembly) internal HV activation request output circuit malfunction or external circuit malfunction (1-trip detection logic*)
·

Certification ECU (smart key ECU assembly)

·

Hybrid vehicle control ECU

·

Wire harness or connector


DTC Output Confirmation Operation:

Turn the ignition switch to ON and wait 10 seconds or more, then start the hybrid control system 3 times.



*: Only detected while a malfunction is present and the ignition switch is ON.


Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
·

The power source mode changes to on (READY) even though the hybrid control system is not started.

·

The power source mode does not change to on (READY) even though the hybrid control system is started.


-

Related Data List and Active Test Items
DTC No. Data List and Active Test
B227511
B227512 		-

WIRING DIAGRAM

C375424E73
5.729,0.698 6.104,0.927 0.375,0.229 10 false +B 6.208,1.323 6.583,1.552 0.375,0.229 10 false IC 5.271,1.042 5.646,1.271 0.375,0.229 10 false ST2 5.052,1.042 5.427,1.271 0.375,0.229 10 false 2 1.26,1.042 1.635,1.271 0.375,0.229 10 false ST2 1.615,1.031 1.99,1.26 0.375,0.229 10 false 11 0.375,2.677 0.75,2.906 0.375,0.229 10 false I278 0.375,2.844 3.271,3.26 2.896,0.417 10 false Hybrid Vehicle Control ECU 5.198,2.688 5.573,2.917 0.375,0.229 10 false I223 5.198,2.854 6.719,3.469 1.521,0.615 10 false Certification ECU (Smart Key ECU Assembly)

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 Start 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 Start 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 TROUBLESHOOTING

·

Before replacing the hybrid vehicle control ECU or 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 FOR DTC
a.

Turn the ignition switch to ON and wait 25 seconds.


b.

Using the GTS, check for certification ECU (smart key ECU assembly) DTCs.

Body Electrical > Power Source Control > Trouble Codes
50001 454
Result:
Result Proceed to
B228562 is not output A
B228562 is output B




A

2.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU)

B

GO TO DTC B228562

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, HEV Model)>B228562


2.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU)
a.

Disconnect the I223 certification ECU (smart key ECU assembly) connector.


b.

Disconnect the I278 hybrid vehicle control ECU connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I223-2 (ST2) - I278-11 (ST2) Always Below 1 Ω
I223-2 (ST2) or I278-11 (ST2) - Other terminals and body ground Always 10 kΩ or higher


Result:
Proceed to
OK
NG




OK

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.

Connect the I223 certification ECU (smart key ECU assembly) connector.


b.
B665279C07
1.302,0.031 1.719,0.24 0.417,0.208 2.135,0.667 2.333,1.969 2.333,1.969 2.521,1.969 true 0.156,0.115 0.469,0.313 0.313,0.198 10 false *a 1.385,0.042 1.844,0.24 0.458,0.198 10 false I223 2.573,1.875 3.031,2.073 0.458,0.198 10 false ST2
*a Component with harness connected
(Certification ECU (Smart Key ECU Assembly))


Connect the I278 hybrid vehicle control ECU connector.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I223-2 (ST2) - Body ground With the brake pedal depressed, the power switch is pressed and held 8.5 V or higher
I223-2 (ST2) - Body ground After approx. 3 sec. has elapsed, the power switch is released 1 V or less


Result:
Proceed to
OK
NG




OK

REPLACE HYBRID VEHICLE CONTROL ECU

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL



NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)