RM38N0EC _58 Vehicle Interior _111832 THEFT DETERRENT / KEYLESS ENTRY _0509385 SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model) C

THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model) B227111 IG Circuit Short to Ground

DESCRIPTION

This DTC is stored when a malfunction in the IG drive circuit or IG hold circuit of the certification ECU (smart key ECU assembly) or a malfunction in the IG output circuit between the output terminal of the certification ECU (smart key ECU assembly) and IG relay is detected.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B227111	IG Circuit Short to Ground	When either of the following conditions is met (1-trip detection logic1): · The IG circuit of the certification ECU (smart key ECU assembly) is malfunctioning.2 · The IG hold circuit of the certification ECU (smart key ECU assembly) is malfunctioning.*3 · There is a malfunction in a circuit outside of the certification ECU (smart key ECU assembly) circuit	· Certification ECU (smart key ECU assembly) · Power distribution box assembly · Wire harness or connector	DTC Output Confirmation Operation: Turn the ignition switch to ON.

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

*2: The IG circuit and IG hold circuit activate the IG relay.

*3: After the IG circuit turns on, even if the certification ECU (smart key ECU assembly) malfunctions, the IG hold circuit will maintain the power source mode in ON.

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected	Fail-safe Function when Malfunction Detected
The ignition switch cannot be turned to ON (the engine cannot be started).	The power source mode cannot be changed to ON.

Related Data List and Active Test Items
DTC No.	Data List and Active Test
B227111	Power Source Control · IGP Relay Circuit (Outside) Monitor · IGR Relay Circuit (Outside) Monitor

WIRING DIAGRAM

2.896,6.677 5.01,7.031 2.115,0.354 10 false Power Distribution Box Assembly 0.354,2.698 2.333,3.302 1.979,0.604 10 false No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly 5.635,6.729 7.146,7.167 1.51,0.438 10 false Certification ECU (Smart key ECU assembly) 0.75,1.667 0.875,1.844 0.125,0.177 10 false 2 1.677,1.667 1.833,1.833 0.156,0.167 10 false 1 2.469,1.542 2.667,1.708 0.198,0.167 10 false 13 2.458,1.76 2.667,1.938 0.208,0.177 10 false 4D 2.469,5.156 2.667,5.333 0.198,0.177 10 false 36 2.458,5.375 2.646,5.552 0.188,0.177 10 false 4B 2.479,5.719 2.677,5.885 0.198,0.167 10 false 41 2.458,5.938 2.667,6.094 0.208,0.156 10 false 4C 5.073,1.542 5.271,1.719 0.198,0.177 10 false 17 5.792,1.552 5.979,1.708 0.188,0.156 10 false 24 6.156,1.885 6.521,2.052 0.365,0.167 10 false IGPD 6.344,1.417 6.563,1.583 0.219,0.167 10 false +B 6.354,3.323 6.573,3.49 0.219,0.167 10 false +B 6.135,3.813 6.49,3.979 0.354,0.167 10 false IGRD 5.073,1.76 5.281,1.927 0.208,0.167 10 false 4C 5.063,3.469 5.25,3.635 0.188,0.167 10 false 11 5.063,3.688 5.271,3.865 0.208,0.177 10 false 4B 3.635,4.365 4.667,4.719 1.031,0.354 10 false IGR NO.1 3.646,6.031 4.646,6.281 1,0.25 10 false IGR NO.2 5.729,3.698 6.01,3.885 0.281,0.188 10 false A15 6.688,2.573 6.854,2.74 0.167,0.167 10 false IC 1.104,2.406 1.375,2.552 0.271,0.146 10 false IGP 5.792,3.469 5.969,3.635 0.177,0.167 10 false 11 6.177,1.021 6.396,1.188 0.219,0.167 10 false +B 5.74,1.76 6.021,1.948 0.281,0.188 10 false A15 5.75,5.844 6.031,6.031 0.281,0.188 10 false E52 5.729,0.99 6.01,1.177 0.281,0.188 10 false E52 6.177,5.833 6.396,6 0.219,0.167 10 false E 6.281,0.177 7.156,0.604 0.875,0.427 10 false from Auxiliary Battery 5.802,0.771 6,0.948 0.198,0.177 10 false 6 5.813,5.615 6,5.781 0.188,0.167 10 false 29 5.583,0.313 5.958,0.521 0.375,0.208 10 false AM2

CAUTION / NOTICE / HINT

NOTICE:: ·

When using the GTS with the ignition switch off, perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins, and then select the vehicle model manually.

Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically perform lock and unlock operations using the door control switch of the multiplex network master switch assembly 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, Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING202203,999999,_58,_111832,_0509385,RM1000000022G46,

·

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 HARNESS AND CONNECTOR (POWER SOURCE)

1.542,2.073 1.948,2.344 0.406,0.271 1.792,4.073 1.583,4.073 1.583,4.073 1,3.333 true 0.448,2.906 0.76,3.104 0.313,0.198 10 false *a 1.635,2.115 1.948,2.313 0.313,0.198 10 false E52 1.885,3.99 2.198,4.188 0.313,0.198 10 false +B

*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

Disconnect the E52 certification ECU (smart key ECU assembly) connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(E52)Location & Routingewd_type=routing;type=c;code=E52 Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=6
E52-6 (+B) - Body ground	Ignition switch off	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(E52)Location & Routingewd_type=routing;type=c;code=E52

Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=6

E52-6 (+B) - Body ground

Ignition switch off

11 to 14 V

Result:

Proceed to
OK
NG

2.CHECK HARNESS AND CONNECTOR (GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE

2.CHECK HARNESS AND CONNECTOR (GROUND)

1.573,2.104 1.969,2.323 0.396,0.219 1.885,4.042 2.021,4.042 2.021,4.042 2.25,3.49 true 0.406,2.719 0.719,2.917 0.313,0.198 10 false *a 1.74,3.969 1.896,4.167 0.156,0.198 10 false E 1.646,2.135 1.917,2.375 0.271,0.24 10 false E52

*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(E52)Location & Routingewd_type=routing;type=c;code=E52 Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=29
E52-29 (E) - Body ground	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(E52)Location & Routingewd_type=routing;type=c;code=E52

Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=29

E52-29 (E) - Body ground

Always

Below 1 Ω

Result:

Proceed to
OK
NG

3.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND)

Disconnect the A15 certification ECU (smart key ECU assembly) connector.

Disconnect the 4B and 4C power distribution box assembly connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A15)Location & Routingewd_type=routing;type=c;code=A15 Click Connector(A15)Instrument Panel>Engine Room Main Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=A15;pinno=24,11
A15-24 (IGPD) - 4C-17	Always	Below 1 Ω
A15-11 (IGRD) - 4B-11	Always	Below 1 Ω
A15-24 (IGPD) or 4C-17 - Other terminals and body ground	Always	10 kΩ or higher
A15-11 (IGRD) or 4B-11 - Other terminals and body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

4.CHECK POWER DISTRIBUTION BOX ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK POWER DISTRIBUTION BOX ASSEMBLY

Disconnect the 4D power distribution box assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
4C-17 - 4D-13	Always	Below 1 Ω
4C-17 or 4D-13 - Other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

5.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - IGP RELAY)

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202303,999999,_57,_111828,_0500082,RM100000002B19F,

5.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - IGP RELAY)

Remove the IGP relay from the No. 1 engine room relay block and No. 1 junction block assembly.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
4D-13 - No. 1 engine room relay block and No. 1 junction block assembly IGP relay terminal 1	Always	Below 1 Ω
4D-13 or No. 1 engine room relay block and No. 1 junction block assembly IGP relay terminal 1 - Other terminals and body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

6.INSPECT IGP RELAY

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT IGP RELAY

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>RELAY>ON-VEHICLE INSPECTION202111,999999,_51,_111785,_0503281,RM100000001ZE2G,

Result:

Proceed to
OK
NG

7.CHECK POWER DISTRIBUTION BOX ASSEMBLY

REPLACE IGP RELAY

7.CHECK POWER DISTRIBUTION BOX ASSEMBLY

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
4B-11 - 4B-36	Always	135 to 165 Ω
4B-11 - 4C-41	Always	135 to 165 Ω
4B-11 or 4B-36 - Other terminals	Always	10 kΩ or higher
4B-11 or 4C-41 - Other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202303,999999,_57,_111828,_0500082,RM100000002B19F,