RM36D0EC _58 Vehicle Interior _083094 THEFT DETERRENT / KEYLESS ENTRY _0403000 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 circuit or IG hold circuit of the certification ECU (smart key ECU assembly) 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	· Certification ECU (smart key ECU assembly) · Harness or connector	DTC Output Confirmation Operation: Turn the ignition switch to ON.

*1: Only detected while a malfunction is present.

*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 Monitor (Outside) · IGR Relay Monitor (Outside)

WIRING DIAGRAM

5.208,3.771 6.781,4.229 1.573,0.458 10 false Certification ECU (Smart Key ECU Assembly) 5.26,1.365 5.708,1.729 0.448,0.365 10 false IGPD 5.271,2.292 5.719,2.656 0.448,0.365 10 false IGRD 6.229,1.688 6.677,2.052 0.448,0.365 10 false IC 5.771,1.885 6.219,2.25 0.448,0.365 10 false +B 5.792,0.969 6.24,1.333 0.448,0.365 10 false +B 1.396,1.469 2.354,1.729 0.958,0.26 10 false to IGP Relay 1.406,2.396 2.521,2.708 1.115,0.313 10 false to IGR Relay 5.208,3.583 6.323,4.021 1.115,0.438 10 false A126 4.99,1.365 5.438,1.729 0.448,0.365 10 false 24 4.979,2.292 5.427,2.656 0.448,0.365 10 false 11

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 the vehicle type under manual mode and enter the following menus: Body Electrical / Entry&Start. 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.

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·

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 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

1.354,0.031 1.74,0.25 0.385,0.219 2.094,2.01 1.979,2.01 1.979,2.01 1.688,0.917 true 2.281,1.854 2.167,1.854 2.167,1.854 1.76,0.802 true 1.396,0.073 1.854,0.271 0.458,0.198 10 false A126 2.333,1.771 2.948,1.969 0.615,0.198 10 false IGRD 2.156,1.948 2.771,2.146 0.615,0.198 10 false IGPD 0.188,0.052 0.802,0.25 0.615,0.198 10 false *a

*a	Component with harness connected (Certification ECU (Smart Key ECU Assembly))

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
A126-11 (IGRD) - Body ground	Ignition switch ACC → Ignition switch ON	1 V or less → 9 V or higher
A126-24 (IGPD) - Body ground	Ignition switch ACC → Ignition switch ON	1 V or less → 9 V or higher

Result:

Proceed to
OK
NG

END (TEMPORARY CONNECTION FAILURE IS SUSPECTED)

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REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)