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

THEFT DETERRENT / KEYLESS ENTRY  SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series))  Engine does not Start  


DESCRIPTION

When the electrical key transmitter sub-assembly is in the cabin and the engine switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Additionally, when the shift lever is in P and the brake pedal is depressed, the engine can be started by pressing the engine switch.

Related Data List and Active Test Items
Problem Symptom Data List and Active Test
Engine does not start
Power Source Control
·

Stop Light Switch1

·

Steering Unlock Switch

·

Shift P Signal

·

Neutral SW/ Clutch SW

·

IG Relay Monitor (Inside)

·

IG Relay Monitor (Outside)

·

Latch Circuit

·

Starter Request Signal

·

Power Supply Condition


Entry&Start
·

Immobiliser

·

Engine Start Request

·

S Code Check

·

L Code Check


Starting Control
·

Starter SW

·

Shift Position P or N

·

Ignition



WIRING DIAGRAM

B546370
0.979,0.5 1.438,0.698 0.458,0.198 10 false STP 0.979,1.917 1.438,2.115 0.458,0.198 10 false STP 5.917,0.5 6.375,0.698 0.458,0.198 10 false STP 1.344,0.396 2.365,0.896 1.021,0.5 10 false 41 5.729,0.396 6.042,0.594 0.313,0.198 10 false 4 1.354,1.813 2.729,2.01 1.375,0.198 10 false 9 0.146,0.875 1.802,1.25 1.656,0.375 10 false A51 0.146,1.021 1.698,1.583 1.552,0.563 10 false Skid Control ECU (Brake Actuator Assembly) 0.646,2.281 2.479,2.479 1.833,0.198 10 false A46 0.656,2.448 1.115,2.646 0.458,0.198 10 false ECM 0.313,3.292 2.146,3.49 1.833,0.198 10 false from Battery 1.656,3.438 2.271,3.635 0.615,0.198 10 false STOP 2.135,3.198 2.292,3.396 0.156,0.198 10 false 7 2.344,3.302 2.5,3.5 0.156,0.198 10 false B 2.135,3.573 2.292,3.771 0.156,0.198 10 false 2 2.333,3.677 2.792,3.875 0.458,0.198 10 false GND 2.771,3.521 3.083,3.719 0.313,0.198 10 false IC 3.302,3.417 3.458,3.615 0.156,0.198 10 false 3 3.094,3.406 3.25,3.604 0.156,0.198 10 false L 2.229,4.063 2.688,4.26 0.458,0.198 10 false A53 2.229,4.208 3.344,4.76 1.115,0.552 10 false Stop Light Switch Assembly 5.792,0.865 6.25,1.063 0.458,0.198 10 false I18 5.792,1.01 6.927,1.76 1.135,0.75 10 false Shift Lock Control Unit Assembly 5.667,3.406 5.979,3.604 0.313,0.198 10 false 24 5.917,3.406 6.531,3.604 0.615,0.198 10 false STP1 6.563,3.573 6.875,3.771 0.313,0.198 10 false IC 5.531,4.229 6.708,4.563 1.177,0.333 10 false O61 5.531,4.385 7.073,4.958 1.542,0.573 10 false Certification ECU (Smart Key ECU Assembly)

B685833
0.177,2.969 1.26,3.625 1.083,0.656 10 false Certification ECU (Smart Key ECU Assembly) 3.938,1.417 4.74,2.198 0.802,0.781 10 false Park/Neutral Position Switch Assembly 3.115,5.479 4.396,5.729 1.281,0.25 10 false Starter Assembly 3.917,4.833 4.344,5.094 0.427,0.26 10 false B 3.177,5 3.708,5.26 0.531,0.26 10 false SL1 5.229,4.833 6.094,5.083 0.865,0.25 10 false from Battery 1.219,3.833 1.646,4.094 0.427,0.26 10 false ST 3.417,3 4.167,3.26 0.75,0.26 10 false ST 1.552,1.406 2.302,1.667 0.75,0.26 10 false CLL 0.854,2.302 1.604,2.563 0.75,0.26 10 false STA 0.771,0.74 1.521,1 0.75,0.26 10 false STAR 1.563,1.75 2.313,2.01 0.75,0.26 10 false STA 3.104,1.573 3.323,1.802 0.219,0.229 10 false P 3.104,1.854 3.323,2.083 0.219,0.229 10 false N 3.385,1.292 3.604,1.521 0.219,0.229 10 false B 3.667,1.292 3.885,1.521 0.219,0.229 10 false L 6.052,0.865 6.802,1.125 0.75,0.26 10 false NSW 6.052,2.302 6.802,2.563 0.75,0.26 10 false STA 6.073,2.917 6.698,3.167 0.625,0.25 10 false ECM 2.052,1.469 2.958,2.125 0.906,0.656 10 false Engine Stop and Start ECU Assembly* 3.938,1.24 4.302,1.531 0.365,0.292 10 false C62 2.063,1.302 2.813,1.563 0.75,0.26 10 false A124 1.74,1.156 2.49,1.427 0.75,0.271 10 false 17 1.75,2.01 2.5,2.271 0.75,0.26 10 false 21 0.188,2.792 0.938,3.052 0.75,0.26 10 false O62 1.229,2.198 1.979,2.458 0.75,0.26 10 false 1 1.229,0.74 1.979,1 0.75,0.26 10 false 2 3.521,1.042 4.271,1.302 0.75,0.26 10 false 4 3.583,2.104 4.333,2.365 0.75,0.26 10 false 9 2.802,5 3.229,5.26 0.427,0.26 10 false C87 2.885,4.792 3.313,5.052 0.427,0.26 10 false 2 4.125,4.833 4.552,5.094 0.427,0.26 10 false C104 4.229,4.625 4.656,4.885 0.427,0.26 10 false 1 1.771,4.24 1.99,4.469 0.219,0.229 10 false 2 1.75,3.406 1.969,3.635 0.219,0.229 10 false 1 2.146,3.406 2.365,3.635 0.219,0.229 10 false 5 2.146,4.25 2.365,4.479 0.219,0.229 10 false 3 0.49,0.406 0.708,0.635 0.219,0.229 10 false +B 0.333,1.01 0.552,1.24 0.219,0.229 10 false IC 5.781,2.198 6.531,2.458 0.75,0.26 10 false 29 5.781,0.771 6.531,1.031 0.75,0.26 10 false 57 6.083,2.75 7.156,3 1.073,0.25 10 false A46 5.188,3.51 7.073,3.76 1.885,0.25 10 false *: w/ Stop and Start System

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

·

If the smart entry and start system (for Start Function) has been disabled, enable the system before performing troubleshooting.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>CUSTOMIZE PARAMETERS

·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

Before replacing the certification ECU (smart key ECU assembly) or an electrical key transmitter sub-assembly, refer to Service Bulletin.

·

After completing repairs, confirm that the problem does not recur.

·

After performing repairs, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."



HINT:
·

If interior verification is unsuccessful, Operation History may be stored.

·

If Operation History has been stored, refer to the Operation History List to determine the detection conditions and narrow down trouble areas.



Body Electrical > Entry&Start > Utility
Tester Display
Operation History
50005 125 52

PROCEDURE

1.CHECK WHETHER ENGINE STARTS
a.

Check that the engine starts.

OK:

Engine starts normally.



Result:
Proceed to
OK
NG



OK

CHECK OPERATION HISTORY

NG

2.CHECK SECURITY INDICATOR LIGHT OPERATION
2.CHECK SECURITY INDICATOR LIGHT OPERATION
a.

Turn the engine switch off.


b.

When the immobiliser is set, check that the security indicator light blinks.


c.

Turn the engine switch on (IG).


d.

When the immobiliser is unset, check that the security indicator light turns off.

OK:

The security indicator light operates normally.



Result:
Proceed to
OK
NG



OK

3.CHECK FOR DTC

NG

GO TO OTHER PROBLEM (Immobiliser System does not Operate Properly)

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Immobiliser System does not Operate Properly


3.CHECK FOR DTC
a.

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes
50001 125
OK:

LIN communication system DTC B2785 or B2789 is not output simultaneously.



Result:
Proceed to
OK
NG



OK

4.CHECK ENGINE CRANKING OPERATION

NG

GO TO LIN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM (for NR Series Engine)>HOW TO PROCEED WITH TROUBLESHOOTING


4.CHECK ENGINE CRANKING OPERATION
a.

Get into the vehicle while carrying an electrical key transmitter sub-assembly.


b.

Move the shift lever to P.


c.

Depress the brake pedal.


d.

Check that the key indicator display is displayed on the multi-information display in the combination meter assembly, and then press the engine switch and check that the engine cranks.


Result:
Result Proceed to
Engine cranks and initial combustion occurs A
Engine cranks but initial combustion does not occur B
Engine does not crank C



A

GO TO OTHER PROBLEM (Immobiliser System does not Operate Properly)

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Immobiliser System does not Operate Properly


B

GO TO SFI SYSTEM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


C

5.CHECK ENGINE SWITCH CONDITION
5.CHECK ENGINE SWITCH CONDITION
a.

Get into the vehicle while carrying an electrical key transmitter sub-assembly.


b.

Move the shift lever to P.


c.

With the brake pedal released, check that pressing the engine switch causes the power source mode to change.


Result:
Result Proceed to
Power source mode changes : Off → on (ACC) → on (IG) → off A
Power source mode does not change to on (ACC) or on (IG) B
Power source mode changes to on (IG) but not to on (ACC) C
Power source mode changes to on (ACC) but not to on (IG) D



A

6.READ VALUE USING GTS (STOP LIGHT SWITCH1)

B

GO TO OTHER PROBLEM (Power Source Mode does not Change to ON (IG and ACC))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Power Source Mode does not Change to ON (IG and ACC)


C

GO TO OTHER PROBLEM (Power Source Mode does not Change to ON (ACC))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Power Source Mode does not Change to ON (ACC)


D

GO TO OTHER PROBLEM (Power Source Mode does not Change to ON (IG))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Power Source Mode does not Change to ON (IG)


6.READ VALUE USING GTS (STOP LIGHT SWITCH1)
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Power Source Control / Data List.


e.

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

Body Electrical > Power Source Control > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Stop Light Switch1 State of brake pedal OFF or ON OFF: Brake pedal released
ON: Brake pedal depressed
·

Use this item to determine if the stop light switch assembly is malfunctioning.

·

The engine cannot be started when this item is OFF.

·

If the stop light switch assembly is malfunctioning, the engine can be started by pressing and holding the engine switch for a certain period of time.


Body Electrical > Power Source Control > Data List
Tester Display
Stop Light Switch1
50003 223 3
OK:

The GTS display changes correctly in response to the brake pedal operation.



Result:
Proceed to
OK
NG



OK

7.READ VALUE USING GTS (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N)

NG

15.INSPECT STOP LIGHT SWITCH ASSEMBLY
7.READ VALUE USING GTS (NEUTRAL SW/ CLUTCH SW, SHIFT POSITION P OR N)
a.

Enter the following menus: Body Electrical / Power Source Control or Starting Control / Data List.


b.

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

Body Electrical > Power Source Control > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Neutral SW/ Clutch SW Shift position (P and N) OFF or ON OFF: Shift lever in any position other than P or N
ON: Shift lever in P or N
·

Use this item to determine if the park/neutral position switch assembly is malfunctioning.

·

When the engine cannot be started due to a park/neutral position switch assembly malfunction, OFF is displayed.


Body Electrical > Power Source Control > Data List
Tester Display
Neutral SW/ Clutch SW
50003 223 6
Body Electrical > Starting Control > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Shift Position P or N Park/Neutral position switch status OFF or ON OFF: Shift lever not in P or N
ON: Shift lever in P or N 		When OFF is displayed, the engine will not crank.
Body Electrical > Starting Control > Data List
Tester Display
Shift Position P or N
50003 221 2
OK:

The GTS display changes correctly in response to the shift lever operation.



Result:
Proceed to
OK
NG



OK

8.READ VALUE USING GTS (STARTER REQUEST SIGNAL)

NG

17.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
8.READ VALUE USING GTS (STARTER REQUEST SIGNAL)
a.

Enter the following menus: Body Electrical / Power Source Control / Data List.


b.

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

Body Electrical > Power Source Control > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Starter Request Signal Engine start request signal status OFF or ON OFF: The engine switch is not pressed
ON: With the shift lever in P and the brake pedal depressed, the engine switch is pressed and held
·

When the engine cannot be started due to a start request signal malfunction, OFF is displayed.

·

When the engine switch is pressed, the duration of time that ON is displayed will be extremely short. As such, the engine switch needs to be pressed and held for a certain period of time.


Body Electrical > Power Source Control > Data List
Tester Display
Starter Request Signal
50003 223 12
NOTICE:

Check that the key indicator display is displayed on the multi-information display in the combination meter assembly, and then press the engine switch.


OK:

The GTS display changes correctly in response to the engine switch operation.



Result:
Proceed to
OK
NG



OK

9.READ VALUE USING GTS (STARTER SW)

NG

19.CHECK STEERING LOCK FUNCTION
9.READ VALUE USING GTS (STARTER SW)
a.

Get into the vehicle while carrying an electrical key transmitter sub-assembly.


b.

Move the shift lever to P.


c.

Enter the following menus: Body Electrical / Starting Control / Data List.


d.

According to the display on the GTS, read the Data List while pressing the engine switch with the brake pedal depressed.

Body Electrical > Starting Control > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Starter SW Starter operation request OFF or ON OFF: Starter operation not requested
ON: Starter operation requested 		When OFF is displayed, the engine will not crank.
Body Electrical > Starting Control > Data List
Tester Display
Starter SW
50003 221 1
OK:

The GTS display changes.



Result:
Proceed to
OK
NG



OK

10.INSPECT ST RELAY

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

10.INSPECT ST RELAY
a.

Inspect the ST relay.

Click hereEngine / Hybrid System>NR Series (STARTING)>RELAY>INSPECTION


Result:
Proceed to
OK
NG



OK

11.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST RELAY)

NG

REPLACE ST RELAY

11.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST RELAY)
a.
C378519C02
0.156,0.125 0.521,0.469 0.365,0.344 10 false *1
*1 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY
(ST Relay Holder)


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

Standard Voltage:
Tester Connection Condition Specified Condition
No. 1 engine room relay block and No. 1 junction block assembly ST relay terminal 1 - Body ground Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off) 6 V or higher* → 1.0 V or less


HINT:

*: While the engine is cranking, the battery voltage may drop to approximately 6 V.



Result:
Proceed to
OK
NG



OK

12.CHECK HARNESS AND CONNECTOR (ST RELAY - BATTERY AND GROUND)

NG

20.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
12.CHECK HARNESS AND CONNECTOR (ST RELAY - BATTERY AND GROUND)
a.
C378519C02
0.156,0.125 0.521,0.469 0.365,0.344 10 false *1
*1 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY
(ST Relay Holder)


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

Standard Resistance:
Tester Connection Condition Specified Condition
No. 1 engine room relay block and No. 1 junction block assembly ST relay terminal 2 - Body ground Always Below 1 Ω



b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
No. 1 engine room relay block and No. 1 junction block assembly ST relay terminal 5 - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

13.CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - ST RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - ST RELAY)
a.

Disconnect the C87 starter assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
No. 1 engine room relay block and No. 1 junction block assembly ST relay terminal 3 - C87-2 Always Below 1 Ω
No. 1 engine room relay block and No. 1 junction block assembly ST relay terminal 3 or C87-2 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

14.CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - BATTERY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.CHECK HARNESS AND CONNECTOR (STARTER ASSEMBLY - BATTERY)
a.

Disconnect the C104 starter assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
C104-1 (B) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE STARTER ASSEMBLY

Click hereEngine / Hybrid System>NR Series (STARTING)>STARTER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.INSPECT STOP LIGHT SWITCH ASSEMBLY
a.

Inspect the stop light switch assembly.

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

16.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL


16.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)
a.

Disconnect the O61 certification ECU (smart key ECU assembly) connector.


b.

Disconnect the A53 stop light switch assembly connector.


c.

Disconnect the A46 ECM connector.


d.

Disconnect the A51 skid control ECU (brake actuator assembly) connector.


e.

Disconnect the I18 shift lock control unit assembly connector.


f.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O61-24 (STP1) - A53-3 (L) Always Below 1 Ω
O61-24 (STP1) or A53-3 (L) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Remove the park/neutral position switch assembly.

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


b.

Inspect the park/neutral position switch assembly.

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

18.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


18.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)
a.

Disconnect the O62 certification ECU (smart key ECU assembly) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O62-2 (STAR) - C62-4 (B) Always Below 1 Ω
O62-2 (STAR) or C62-4 (B) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

19.CHECK STEERING LOCK FUNCTION
a.

Check that the steering unlocks when the engine switch is turned on (ACC).

OK:

The steering unlocks.



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

GO TO OTHER PROBLEM (Unable to Unlock Steering Wheel (Engine cannot Start))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM (for Start Function, Gasoline Model (NR Series))>Unable to Unlock Steering Wheel (Engine cannot Start)


20.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.
B424432C89
1.469,0.073 1.885,0.323 0.417,0.25 1.031,1.802 1.25,1.802 1.25,1.802 1.25,0.833 true 0.104,0.083 0.417,0.281 0.313,0.198 10 false *a 1.542,0.115 1.854,0.313 0.313,0.198 10 false O62 0.635,1.719 1.563,1.917 0.927,0.198 10 false STAR
*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 Condition Specified Condition
O62-2 (STAR) - Body ground Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off) 6 V or higher* → 1.0 V or less


HINT:

*: While the engine is cranking, the battery voltage may drop to approximately 6 V.



Result:
Proceed to
OK
NG



OK

21.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

21.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)
a.

Disconnect the O62 certification ECU (smart key ECU assembly) connector.


b.

Disconnect the C62 park/neutral position switch assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O62-2 (STAR) - C62-4 (B) Always Below 1 Ω
O62-2 (STAR) or C62-4 (B) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

22.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

22.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.

Install the ST relay to the No. 1 engine room relay block and No. 1 junction block assembly.


b.
B424432C90
1.458,0.073 1.875,0.323 0.417,0.25 2.323,1.917 2.156,1.917 2.156,1.917 2.156,0.833 true 0.104,0.083 0.417,0.281 0.313,0.198 10 false *a 1.531,0.104 1.844,0.302 0.313,0.198 10 false O62 2.354,1.833 2.667,2.031 0.313,0.198 10 false STA
*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 Condition Specified Condition
O62-1 (STA) - Body ground Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off) 6 V or higher* → 1.0 V or less


HINT:

*: While the engine is cranking, the battery voltage may drop to approximately 6 V.



Result:
Proceed to
OK
NG



OK

23.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST RELAY)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

23.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ST RELAY)
a.

Disconnect the O62 certification ECU (smart key ECU assembly) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O62-1 (STA) - 1 (ST relay) Always Below 1 Ω
O62-1 (STA) or 1 (ST relay) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

24.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C62-9 (L) - 1 (ST relay) Always Below 1 Ω
C62-9 (L) or 1 (ST relay) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

GO TO SFI SYSTEM

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NG

REPAIR OR REPLACE HARNESS OR CONNECTOR