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

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model)  Immobiliser System does not Operate Properly  


DESCRIPTION

The immobiliser function compares the ID code that is registered in the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electrical key transmitter sub-assembly.

WIRING DIAGRAM

C375433E62
5.625,2.802 6.146,3.01 0.521,0.208 10 false A109 6.125,2.802 6.667,3.021 0.542,0.219 10 false ECM 5.813,1.26 6.271,1.458 0.458,0.198 10 false +B 5.313,0.813 5.771,1.01 0.458,0.198 10 false IMO 5.313,1.719 5.771,1.917 0.458,0.198 10 false IMI 5.021,0.813 5.375,1.094 0.354,0.281 10 false 55 5.021,1.719 5.302,1.979 0.281,0.26 10 false 54 1.573,0.792 2.135,1.01 0.563,0.219 10 false EFII 1.531,1.76 1.99,1.958 0.458,0.198 10 false EFIO 1.979,0.813 2.438,1.01 0.458,0.198 10 false 3 1.99,1.74 2.448,1.938 0.458,0.198 10 false 4 0.698,0.26 1.156,0.458 0.458,0.198 10 false +B 0.208,2.833 0.667,3.031 0.458,0.198 10 false E55 0.198,3 3.052,3.271 2.854,0.271 10 false ID Code Box (Immobiliser Code ECU)

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 TROUBLESHOOTING

·

Before replacing the ECM 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".



HINT:

If an immobiliser function or engine DTC is output, first perform troubleshooting for the immobiliser function or engine DTC.


PROCEDURE

1.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes
50001 440
Powertrain > Engine > Trouble Codes
50001 372

Result:
Result Proceed to
DTCs are not output A
DTCs are output B



A

2.READ VALUE USING GTS (IMMOBILISER FUEL CUT)

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model)>DIAGNOSTIC TROUBLE CODE CHART


2.READ VALUE USING GTS (IMMOBILISER FUEL CUT)
a.

Read the Data List according to the display on the GTS.

Powertrain > Engine > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Immobiliser Fuel Cut Status Immobiliser fuel cut status OFF or ON OFF: Fuel cut OFF
ON: Fuel cut ON 		-
Powertrain > Engine > Data List
Tester Display
Immobiliser Fuel Cut Status
50003 372 65

Result:
Result Proceed to
On the GTS screen, ON is displayed. A
On the GTS screen, OFF is displayed. B



A

GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


B

3.CHECK WHETHER ENGINE STARTS
3.CHECK WHETHER ENGINE STARTS
a.

Check that the engine starts after 5 seconds of the ignition switch being turned to ON.

OK:

Engine starts normally.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

4.CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILIZER CODE ECU) - ECM)
4.CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILIZER CODE ECU) - ECM)
a.

Disconnect the E55 ID code box (immobiliser code ECU) connector.


b.

Disconnect the A109 ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(A109,E55)Location & Routing

Click Connector(A109)Engine Compartment>Engine Room Main Wire / Transmission Wire>ECM

Click Connector(E55)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>ID Code Box (Immobiliser Code ECU)

A109-55 (IMO) (IMO) - E55-3 (EFII) Always Below 1 Ω
A109-55 (IMO) or E55-3 (EFII) - Other terminals and body ground Always 10 kΩ or higher
A109-54 (IMI) - E55-4 (EFIO) Always Below 1 Ω
A109-54 (IMI) or E55-4 (EFIO) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.CHECK ID CODE BOX (IMMOBILIZER CODE ECU) (TERMINAL EFIO AND EFII)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK ID CODE BOX (IMMOBILIZER CODE ECU) (TERMINAL EFIO AND EFII)
a.

Using an oscilloscope, check the waveform.

C379328C17
3.344,0.042 3.844,0.229 0.5,0.188 4.594,1.438 4.365,1.438 4.365,1.438 3.656,0.927 true 3.313,0.927 2.688,1.448 2.688,1.448 2.458,1.448 true 3,3.646 3,4.229 3,4.229 2.833,4.229 true 3.167,3.656 3.167,4.24 3.167,4.24 3.333,4.24 true 3.583,5.677 3.583,6.24 3.583,6.24 3.75,6.24 true 3.417,5.688 3.417,6.365 3.417,6.365 3.583,6.365 true 2.26,0.094 2.573,0.25 0.313,0.156 10 false *a 2.656,4.146 2.969,4.302 0.313,0.156 10 false *b 3.354,4.146 3.667,4.302 0.313,0.156 10 false *c 3.646,6.292 3.958,6.448 0.313,0.156 10 false *d 3.667,7.375 3.979,7.531 0.313,0.156 10 false *e 1.375,2.427 1.688,2.583 0.313,0.156 10 false *f 1.375,4.448 1.688,4.604 0.313,0.156 10 false *g 2.417,4.646 2.729,4.802 0.313,0.156 10 false *h 3.031,2.698 3.344,2.854 0.313,0.156 10 false *i 3.458,4.615 3.771,4.771 0.313,0.156 10 false *j 1.458,6.49 1.771,6.646 0.313,0.156 10 false *k 4.635,1.354 5.25,1.552 0.615,0.198 10 false EFII 3.781,6.156 4.094,6.313 0.313,0.156 10 false *c 3.74,7.125 4.052,7.281 0.313,0.156 10 false *d 1.854,7.135 2.167,7.292 0.313,0.156 10 false *d 1.948,7.385 2.26,7.542 0.313,0.156 10 false *e 1.042,5.646 1.406,5.906 0.365,0.26 10 false GND 1.042,3.604 1.406,3.865 0.365,0.26 10 false GND 2.115,1.365 2.729,1.563 0.615,0.198 10 false EFIO 3.5,0.073 4.115,0.271 0.615,0.198 10 false E55
*a Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) 		*b Approximately 160 ms.
*c Approximately 270 ms. *d Approximately 40 ms.
*e Approximately 60 ms. *f Waveform (EFII)
*g Waveform (EFIO) *h Waveform A
*i Waveform B *j Waveform C
*k Waveform A (detail) - -


NOTICE:

The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.


OK:
Tester Connection Condition Tool Setting Specified Condition

Click Location & Routing(E55)Location & Routing

Click Connector(E55)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>ID Code Box (Immobiliser Code ECU)

E55-3 (EFII) - Body ground Within 3 seconds of engine start or within 3 seconds of ignition switch turned to ON after auxiliary battery cable disconnected and reconnected 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform 2)
E55-4 (EFIO) - Body ground Within 3 seconds of engine start or within 3 seconds of ignition switch turned to ON after auxiliary battery cable disconnected and reconnected 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform 1 and 3)



Result:
Result Proceed to
Normal waveform A
Waveform A is not output, or has abnormal wavelength or shape B
Waveform B or is not output, or has abnormal wavelength or shape C



A

6.REGISTER ECU COMMUNICATION ID

B

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

C

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL


6.REGISTER ECU COMMUNICATION ID
a.

Register the ECU communication ID codes.

HINT:

Refer to Service Bulletin.



Result:
Proceed to
NEXT



NEXT

7.CHECK WHETHER ENGINE STARTS
7.CHECK WHETHER ENGINE STARTS
a.

Check that the engine starts.

OK:

Engine starts normally.



Result:
Proceed to
OK
NG



OK

END (COMMUNICATION ID REGISTRATION WAS DEFECTIVE)

NG

REPLACE ID CODE BOX (IMMOBILIZER CODE ECU)