RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM J

NR Series ENGINE CONTROL  SFI SYSTEM  MIL Circuit  


DESCRIPTION

The Malfunction Indicator Lamp (MIL) is used to indicate vehicle malfunctions detected by the ECM.

The MIL operation can be checked visually. When the ignition switch is first turned to ON, the MIL should be illuminated and should then turn off after the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.

WIRING DIAGRAM

A373204E31
1.26,0.885 1.875,1.083 0.615,0.198 10 false CANH 1.292,1.594 1.906,1.792 0.615,0.198 10 false CANL 2.833,0.875 3.448,1.073 0.615,0.198 10 false CA5H 5.51,1.573 6.125,1.771 0.615,0.198 10 false CANL 5.51,0.865 6.125,1.063 0.615,0.198 10 false CANH 2.844,1.573 3.458,1.771 0.615,0.198 10 false CA5L 3.927,0.875 4.542,1.073 0.615,0.198 10 false CA4H 3.948,1.583 4.563,1.781 0.615,0.198 10 false CA4L 0.927,3.219 3.042,3.51 2.115,0.292 10 false : CAN Communication Line 2.896,2.25 4.438,2.5 1.542,0.25 10 false Network Gateway ECU 0.083,2.25 2.021,2.573 1.938,0.323 10 false Combination Meter Assembly 6.073,2.26 6.583,2.542 0.51,0.281 10 false ECM 6.094,2.094 6.708,2.292 0.615,0.198 10 false A46 2.906,2.094 3.521,2.292 0.615,0.198 10 false I53 0.094,2.094 0.708,2.292 0.615,0.198 10 false I4 1.729,0.708 2.344,0.906 0.615,0.198 10 false 9 1.729,1.417 2.344,1.615 0.615,0.198 10 false 25 2.604,0.708 3.219,0.906 0.615,0.198 10 false 15 2.604,1.417 3.219,1.615 0.615,0.198 10 false 16 4.365,0.698 4.979,0.896 0.615,0.198 10 false 18 4.365,1.417 4.979,1.615 0.615,0.198 10 false 17 5.281,0.708 5.896,0.906 0.615,0.198 10 false 13 5.271,1.396 5.885,1.594 0.615,0.198 10 false 26

PROCEDURE

1.CHECK THAT MIL IS ILLUMINATED
a.

Perform troubleshooting in accordance with the table below.

Result:
MIL Condition Proceed to
Illuminates → Turns off Ignition switch ON → engine is started A
Other than above - B




A

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


B

2.CHECK COMMUNICATION BETWEEN GTS AND ECM
2.CHECK COMMUNICATION BETWEEN GTS AND ECM
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Check the communication between the GTS and ECM.

HINT:

It can be checked using the "Engine" item of the Data List.


Result:
Result Proceed to
Communication is possible A
Communication is not possible B




A

3.CHECK WHETHER DTC OUTPUT RECURS

B

GO TO VC OUTPUT CIRCUIT

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>VC Output Circuit


3.CHECK WHETHER DTC OUTPUT RECURS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: System Select / Health Check.


e.

Check if any DTCs have been detected. Note down any DTCs.

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


HINT:

Check for detected DTCs output from other ECUs which relate to the MIL.




A

4.PERFORM ACTIVE TEST USING GTS

B

REPAIR CIRCUIT INDICATED BY OUTPUT

4.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Combination Meter / Active Test / Check Engine Warning.

Body Electrical > Combination Meter > Active Test
Tester Display
Check Engine Warning
50004 409 64

e.

Check the status of the MIL while performing the Active Test.

Result:
Result Proceed to
Changes A
Does not change B




A

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


B

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL