RM38T0EC _58 Vehicle Interior _115230 THEFT DETERRENT / KEYLESS ENTRY _0512195 IMMOBILISER SYSTEM(w/o Smart Entry and Start System) J

THEFT DETERRENT / KEYLESS ENTRY  IMMOBILISER SYSTEM(w/o Smart Entry and Start System)  Engine does not Start but Initial Combustion Occurs  


DESCRIPTION

If the key ID codes of the door control transmitter assembly and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts.

WIRING DIAGRAM

E366879E75
1.615,0.99 2.073,1.188 0.458,0.198 10 false IMO 1.656,1.802 2.115,2 0.458,0.198 10 false IMI 1.99,1 2.99,1.323 1,0.323 10 false 55 1.969,1.823 3.01,2.177 1.042,0.354 10 false 54 5.042,1.021 5.5,1.219 0.458,0.198 10 false 10 5.042,1.823 5.5,2.021 0.458,0.198 10 false 11 5.302,1.021 5.76,1.219 0.458,0.198 10 false EFII 4.948,2.802 5.406,3 0.458,0.198 10 false I67 5.302,1.823 5.76,2.021 0.458,0.198 10 false EFIO 0.719,2.844 2.167,3.063 1.448,0.219 10 false A182 0.708,3.01 1.479,3.313 0.771,0.302 10 false ECM 4.938,2.958 6.969,3.479 2.031,0.521 10 false Transponder Key ECU Assembly 1.344,1.375 1.802,1.573 0.458,0.198 10 false 12 V 6.01,0.542 6.469,0.74 0.458,0.198 10 false 12 V

CAUTION / NOTICE / HINT

NOTICE:

If the transponder key ECU assembly or ECM is replaced, refer to Service Bulletin.


PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Immobiliser > Clear DTCs
50002 260
Powertrain > Engine > Clear DTCs
50002 372

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Immobiliser > Trouble Codes
50001 260
Powertrain > Engine > Trouble Codes
50001 372

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



A

3.READ VALUE USING GTS (IMMOBILISER FUEL CUT STATUS / IMMOBILISER FUEL CUT)

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>IMMOBILISER SYSTEM (w/o Smart Entry and Start System)>DIAGNOSTIC TROUBLE CODE CHART


3.READ VALUE USING GTS (IMMOBILISER FUEL CUT STATUS / 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 Status of immobiliser system fuel cut ON or OFF OFF -
Powertrain > Engine > Data List
Tester Display
Immobiliser Fuel Cut Status
50003 372 65
OK:

OFF is displayed after the engine is started.



Result:
Proceed to
OK
NG



OK

GO TO SFI SYSTEM

Click hereEngine / Hybrid System>M20A-FKS, M20C-FKS, M20E-FKS (ENGINE CONTROL)>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


NG

4.CHECK WHETHER ENGINE STARTS
4.CHECK WHETHER ENGINE STARTS
a.

Using a registered door control transmitter assembly, turn the ignition switch to ON.


b.

Check that the engine starts 5 seconds after the ignition switch was 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

5.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFIO)
5.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFIO)
a.

Using an oscilloscope, check the waveform.


B460719C10
3.167,0.052 3.583,0.323 0.417,0.271 2.781,1.906 3.042,1.115 true 3.281,0.104 3.74,0.302 0.458,0.198 10 false I67 0.74,3.375 1.198,3.573 0.458,0.198 10 false GND 1.135,0.156 1.448,0.375 0.313,0.219 10 false *a 1.885,4.083 2.198,4.302 0.313,0.219 10 false *c 2.625,1.969 3.083,2.167 0.458,0.198 10 false EFIO 3.74,4.073 4.052,4.292 0.313,0.219 10 false *c 2.385,4.802 2.698,5.021 0.313,0.219 10 false *d 4.396,4.813 4.708,5.031 0.313,0.219 10 false *d 2.458,5.063 2.771,5.281 0.313,0.219 10 false *e 4.344,5.063 4.656,5.281 0.313,0.219 10 false *e 2.188,2.354 2.5,2.573 0.313,0.219 10 false *b
*a Component with harness connected
(Transponder Key ECU Assembly) 		*b Waveform
*c Waveform (detail) *d Approximately 40 ms.
*e Approximately 60 ms. - -


OK
Tester Connection Condition Tool Setting Specified Condition
I67-11 (EFIO) - Body ground Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)

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



A

6.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFII)

B

10.CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM)
6.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFII)
a.

Using an oscilloscope, check the waveform.


B463094C18
3.417,0.333 3.833,0.604 0.417,0.271 2.979,2.365 3.365,1.563 true 3.188,4.542 3.063,4.083 true 2.698,4.542 2.885,4.104 true 0.927,4.063 1.385,4.26 0.458,0.198 10 false GND 0.365,0.188 0.792,0.5 0.427,0.313 10 false *a 2.906,3.125 3.333,3.438 0.427,0.313 10 false *b 3.521,0.385 3.958,0.656 0.438,0.271 10 false I67 2.854,2.417 3.313,2.615 0.458,0.198 10 false EFII 2.615,4.552 2.927,4.771 0.313,0.219 10 false *c 3.146,4.563 3.458,4.781 0.313,0.219 10 false *d
*a Component with harness connected
(Transponder Key ECU Assembly) 		*b Waveform
*c Approximately 160 ms. *d Approximately 270 ms.


OK
Tester Connection Condition Tool Setting Specified Condition
I67-10 (EFII) - Body ground Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)

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



A

7.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFIO)

B

REPLACE ECM

Click hereEngine / Hybrid System>M20A-FKS, M20C-FKS, M20E-FKS (ENGINE CONTROL)>ECM>REMOVAL


7.INSPECT TRANSPONDER KEY ECU ASSEMBLY (TERMINAL EFIO)
a.

Using an oscilloscope, check the waveform.

B463095C27
3.396,0.385 3.781,0.656 0.385,0.271 2.969,2.271 3.25,1.563 true 3.063,4.573 3.302,4.094 true 3.698,4.573 3.49,4.094 true 0.375,0.125 0.688,0.323 0.313,0.198 10 false *a 3.49,0.427 3.802,0.625 0.313,0.198 10 false I67 2.813,2.313 3.271,2.542 0.458,0.229 10 false EFIO 3.333,3.021 3.792,3.25 0.458,0.229 10 false *b 0.958,4.042 1.417,4.271 0.458,0.229 10 false GND 2.969,4.573 3.229,4.76 0.26,0.188 10 false *c 3.656,4.604 3.917,4.792 0.26,0.188 10 false *d
*a Component with harness connected
(Transponder Key ECU Assembly) 		*b Waveform
*c Approximately 160 ms. *d Approximately 270 ms.


OK
Tester Connection Condition Tool Setting Specified Condition
I67-11 (EFIO) - Body ground Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal 2 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)


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



A

8.REGISTER ECU COMMUNICATION ID

B

REPLACE TRANSPONDER KEY ECU ASSEMBLY

8.REGISTER ECU COMMUNICATION ID
a.

Register the communication ID between the transponder key ECU assembly and ECM.


Result:
Proceed to
NEXT



NEXT

9.CHECK WHETHER ENGINE STARTS
9.CHECK WHETHER ENGINE STARTS
a.

Using a registered door control transmitter assembly, turn the ignition switch to ON.


b.

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

OK:

Engine starts normally.



Result:
Result Proceed to
Engine can be started A
Engine cannot be started B



A

END (REGISTERED COMMUNICATION ID WAS DEFECTIVE)

B

REPLACE TRANSPONDER KEY ECU ASSEMBLY

10.CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM)
a.

Disconnect the I67 transponder key ECU assembly connector.


b.

Disconnect the A182 ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
I67-11 (EFIO) - A182-54 (IMI) Always Below 1 Ω
I67-11 (EFIO) or A182-54 (IMI) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE TRANSPONDER KEY ECU ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR