RM3660EC _58 Vehicle Interior _080747 THEFT DETERRENT / KEYLESS ENTRY _0586354 SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series)) C

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series))  B2271  Ignition Hold Monitor Malfunction  


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
B2271 Ignition Hold Monitor Malfunction When either of the following conditions is met (1-trip detection logic*1):
·

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)

·

Driver side junction block assembly

·

No. 1 integration relay

·

Wire harness or connector


DTC Output Confirmation Operation:

Turn the engine switch on (IG).



*1: Only detected while a malfunction is present and the engine switch is on (IG).

*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 (IG).


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

Related Data List and Active Test Items
DTC No. Data List and Active Test
B2271
Power Source Control
·

IG Relay Monitor (Inside)

·

Latch Circuit


Starting Control
·

Ignition



WIRING DIAGRAM

B630383E76
0.563,2.24 2.031,2.531 1.469,0.292 10 false No. 1 Integration Relay 2.708,7.458 5.031,7.927 2.323,0.469 10 false Driver Side Junction Block Assembly 5.615,4.396 7.125,4.885 1.51,0.49 10 false Certification ECU (Smart key ECU assembly) 0.365,1.073 0.542,1.438 0.177,0.365 10 false 8 2.104,1.073 2.26,1.271 0.156,0.198 10 false 7 1.01,1.823 1.615,2.042 0.604,0.219 10 false IG2 NO.1 3.615,3.063 4.219,3.281 0.604,0.219 10 false IG2 NO.2 3.646,5.031 4.25,5.25 0.604,0.219 10 false IG1 NO.2 3.604,6.917 4.208,7.135 0.604,0.219 10 false IG1 NO.1 0.563,2.094 0.875,2.292 0.313,0.198 10 false 1A 2.469,0.927 2.719,1.135 0.25,0.208 10 false 13 2.479,6.24 2.792,6.438 0.313,0.198 10 false 4F 2.521,6.031 2.771,6.24 0.25,0.208 10 false 3 5.094,2.375 5.406,2.573 0.313,0.198 10 false 4E 5.104,2.167 5.354,2.375 0.25,0.208 10 false 17 5.823,2.281 6.198,2.479 0.375,0.198 10 false IG1D 5.563,2.281 5.813,2.49 0.25,0.208 10 false 15 5.635,4.219 5.844,4.427 0.208,0.208 10 false I1 6.198,1.885 6.51,2.083 0.313,0.198 10 false +B 6.698,2.219 6.844,2.427 0.146,0.208 10 false IC 2.469,1.156 2.781,1.354 0.313,0.198 10 false 4B 5.594,3.729 5.844,3.938 0.25,0.208 10 false 18 5.823,3.813 6.135,4.01 0.313,0.198 10 false E 5.635,1.323 5.885,1.531 0.25,0.208 10 false 3 5.833,1.375 6.146,1.573 0.313,0.198 10 false +B 5.427,0.531 5.865,0.75 0.438,0.219 10 false AM2 6.177,0.365 7.063,0.646 0.885,0.281 10 false from Battery

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the engine 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, Gasoline Model (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 HARNESS AND CONNECTOR (POWER SOURCE)
a.
B518918C01
1.479,2.427 1.865,2.677 0.385,0.25 2.417,4.313 2.167,4.313 2.167,4.313 2.167,3.563 true 0.427,3.104 0.74,3.396 0.313,0.292 10 false *a 1.625,2.458 1.938,2.75 0.313,0.292 10 false I1 2.458,4.208 2.771,4.5 0.313,0.292 10 false +B
*a Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly))


Disconnect the I1 certification ECU (smart key ECU assembly) connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
I1-3 (+B) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (GROUND)

NG

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

2.CHECK HARNESS AND CONNECTOR (GROUND)
a.
B518918C02
1.406,2.448 1.823,2.698 0.417,0.25 1.406,4.396 1.156,4.396 1.156,4.396 1.156,3.813 true 0.344,2.958 0.625,3.208 0.281,0.25 10 false *a 1.563,2.479 1.802,2.708 0.24,0.229 10 false I1 1.448,4.302 1.688,4.531 0.24,0.229 10 false E
*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
I1-18 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
a.

Disconnect the 4E driver side junction block assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I1-15 (IG1D) - 4E-17 Always Below 1 Ω
I1-15 (IG1D) or 4E-17 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - NO.1 INTEGRATION RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - NO.1 INTEGRATION RELAY)
a.

Disconnect the 1A No. 1 integration relay connector.


b.

Disconnect the 4B driver side junction block assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
4B-13 - 1A-7 Always Below 1 Ω
4B-13 or 1A-7 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.INSPECT NO.1 INTEGRATION RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT NO.1 INTEGRATION RELAY
a.

Inspect the No. 1 integration relay.

Click herePower Source / Network>POWER DISTRIBUTION>INTEGRATION RELAY>INSPECTION


Result:
Proceed to
OK
NG



OK

6.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

NG

REPLACE NO.1 INTEGRATION RELAY

Click herePower Source / Network>POWER DISTRIBUTION>INTEGRATION RELAY>REMOVAL


6.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY
a.

Disconnect the 4F instrument panel junction block assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
4E-17 - 4F-3 Always 20 Ω or higher
4E-17 - 4B-13 Always Below 1 Ω
4E-17 or 4F-3 - Other terminals Always 10 kΩ or higher
4E-17 or 4B-13 - Other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL