RM35X0E _51 Engine / Hybrid System _078720 7GR-FKS ENGINE CONTROL _0381907 SFI SYSTEM J

7GR-FKS ENGINE CONTROL  SFI SYSTEM  Drive Start Control  


DESCRIPTION

The drive start control is controlled by the ECM.

If the ECM determines that the shift lever and accelerator pedal are operated abnormally, engine output is restricted and, when necessary, a warning is displayed on the combination meter assembly.

A373286E56
0.385,0.615 2.573,0.917 2.188,0.302 10 false Accelerator Pedal Position Sensor 2.635,0.896 4.167,1.438 1.531,0.542 10 false Actual Accelerator Pedal Opening Value 0.375,1.427 2.198,2.292 1.823,0.865 10 false Airbag ECU Assembly 2.677,2.198 3.969,2.615 1.292,0.417 10 false Vehicle Acceleration 0.365,3.135 2.167,3.646 1.802,0.51 10 false Park/Neutral Position Switch Assembly 2.688,3.604 3.958,3.865 1.271,0.26 10 false Shift Lever Position 0.396,4.302 2.031,4.875 1.635,0.573 10 false Vehicle Speed Sensor or Wheel Speed Sensor 2.667,4.729 3.708,5.01 1.042,0.281 10 false Vehicle Speed 0.375,5.438 2.49,5.729 2.115,0.292 10 false Transmission Revolution Sensor 2.688,5.677 3.979,5.99 1.292,0.313 10 false Input/Output Speed 4.365,6.354 4.823,6.552 0.458,0.198 10 false ECM 5.667,1.354 7.104,1.958 1.438,0.604 10 false Meter Display Request (Only during shift control) 5.698,4.292 6.604,4.833 0.906,0.542 10 false Engine Output Request

CAUTION / NOTICE / HINT

HINT:

Even if the accelerator pedal position is maintained, the engine output may increase when driving uphill and decrease when driving downhill. This is due to the drive start control controlling the engine output, and is not a malfunction.


PROCEDURE

1.SYMPTOM CONFIRMATION
a.

Interview the customer to confirm the problem.


Result:
Result Proceed to
Hunting A
Hesitation/poor acceleration B



A

2.PAST ACTIVATION CONFIRMATION

B

7.PAST ACTIVATION CONFIRMATION
2.PAST ACTIVATION CONFIRMATION
a.

Check if the customer operated the vehicle in a way that would cause the drive start control to operate.

HINT:
Drive Start Control Activation Conditions
Shift control

Activation conditions


·

Pattern A (When all of the following conditions are met, control starts.)

-

The accelerator pedal is open by approximately 1/5 or more.

-

The shift lever is moved from P to any forward position (D or S) or R.



·

Pattern B (When all of the following conditions are met, control starts.)

-

The accelerator pedal is open by approximately 1/5 or more.

-

The shift lever is moved from R to any forward position (D or S), any forward position (D or S) to R, or N to R.

A407226E39
3.063,0.99 3.531,0.458 3.531,0.458 3.677,0.458 false 2.625,1.708 4.771,1.417 4.771,1.417 4.896,1.417 true 4.073,3.052 4.448,2.573 4.448,2.573 4.656,2.573 false 4.063,3.531 4.844,3.083 4.844,3.083 4.969,3.083 true 4.563,3.958 5.052,3.531 5.052,3.531 5.219,3.531 false 3.729,0.396 6.323,0.708 2.594,0.313 10 false Shift operation of pattern A or pattern B 1.021,1.198 2.74,1.49 1.719,0.292 10 false Shift Lever Position 0.854,1.625 2.479,1.896 1.625,0.271 10 false Accelerator Pedal ON 0.792,1.948 2.479,2.24 1.688,0.292 10 false Accelerator Pedal OFF 4.938,1.333 6.677,1.844 1.74,0.51 10 false Accelerator pedal is open by approximately 1/5 or more. 2.792,2.344 4,2.708 1.208,0.365 10 false Activated 1.208,3.302 2.427,3.625 1.219,0.323 10 false Engine Output 4.719,2.479 6,2.802 1.281,0.323 10 false without control 5.021,3.021 5.823,3.375 0.802,0.354 10 false Restricted 5.281,3.458 6.25,3.802 0.969,0.344 10 false with control * 3.208,4.104 3.719,4.417 0.51,0.313 10 false Time 4.552,4.104 7.083,4.563 2.531,0.458 10 false *: The engine output restricted level differs between pattern A and pattern B.



·

Items Controlled

-

Engine output is restricted.



·

Deactivation Conditions

-

The accelerator pedal is released.

-

The shift lever is in P or N.



Reverse control

Activation conditions


·

The shift lever is in R.

·

The accelerator pedal is depressed excessively.

A407227E40
3.313,1.333 5.094,0.938 5.094,0.938 5.271,0.938 false 4.438,2.906 4.823,2.375 4.823,2.375 4.99,2.375 false 4.188,3.26 5.125,2.885 5.125,2.885 5.271,2.885 true 4.74,3.542 5.219,3.271 5.219,3.271 5.385,3.271 false 1.219,0.781 2.729,1.167 1.51,0.385 10 false Shift Lever Position 2.781,0.781 2.938,0.979 0.156,0.198 10 false R 1.083,1.25 2.76,1.594 1.677,0.344 10 false Accelerator Pedal ON 1.01,1.646 2.667,2.042 1.656,0.396 10 false Accelerator Pedal OFF 5.302,0.875 7,1.281 1.698,0.406 10 false When the accelerator pedal is suddenly depressed. 2.896,2.24 3.625,2.542 0.729,0.302 10 false Activated 1.49,3.104 2.667,3.448 1.177,0.344 10 false Engine Output 5.031,2.281 6.156,2.594 1.125,0.313 10 false without control 5.323,2.802 6.073,3.104 0.75,0.302 10 false Restricted 5.438,3.177 6.375,3.49 0.938,0.313 10 false with control 3.802,3.969 4.375,4.281 0.573,0.313 10 false Time


·

Items Controlled

-

Engine output is restricted.



·

Deactivation Conditions

-

The accelerator pedal is released.

-

The shift lever is moved to any position other than R.




HINT:
·

The engine output restricted level differs between pattern A, pattern B and Reverse control.

·

During reverse control or shift control, engine output is adjusted based on the road gradient.




Result:
Result Proceed to
Performed A
Not performed B



A

3.CHECK DTC OUTPUT

B

SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE)

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


3.CHECK DTC OUTPUT
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 the DTCs.


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



A

4.READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED)

B

GO TO DTC CHART

4.READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Start the engine.


e.

Enter the following menus: Chassis / Brake / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.

Chassis > Brake > Data List
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
50003 435 13,14,15,16

f.

Read the value displayed on the GTS.

Standard:
GTS Display Condition Specified Condition
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed 		Vehicle stopped, engine running 0 km/h (0 mph)
Vehicle being driven at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed


CAUTION:

When performing a drive test, obey all speed limits and traffic laws.


HINT:

Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.



Result:
Proceed to
OK
NG



OK

5.READ VALUE USING GTS (OUTPUT AXIS SPEED)

NG

INSPECT FRONT OR REAR SPEED SENSOR

5.READ VALUE USING GTS (OUTPUT AXIS SPEED)
a.

Connect the GTS to the DLC3.


b.

Start the engine.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Output Axis Speed.

Powertrain > Engine > Data List
Tester Display
Output Axis Speed
50003 372 303

e.

Read the value displayed on the GTS.

Standard:
GTS Display Condition Specified Condition
Output Axis Speed Vehicle stopped, engine running 0 rpm
Vehicle being driven at a constant speed of approximately 60 km/h (37 mph) No large fluctuations when driving at a constant speed


CAUTION:

When performing a drive test, obey all speed limits and traffic laws.


HINT:

Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.



Result:
Proceed to
OK
NG



OK

6.READ VALUE USING GTS (FORWARD AND REARWARD G)

NG

INSPECT TRANSMISSION REVOLUTION SENSOR

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>AUTOMATIC TRANSMISSION SYSTEM (for 7GR-FKS)>HOW TO PROCEED WITH TROUBLESHOOTING


6.READ VALUE USING GTS (FORWARD AND REARWARD G)
a.

Connect the GTS to the DLC3.


b.

Start the engine.


c.

Turn the GTS on.


d.

Enter the following menus: Chassis / Brake / Data List / Forward and Rearward G.

Chassis > Brake > Data List
Tester Display
Forward and Rearward G
50003 435 26

e.

Read the value displayed on the GTS.

Standard:
GTS Display Condition Specified Condition
Forward and Rearward G During deceleration Value changes with vehicle speed


CAUTION:

When performing a drive test, obey all speed limits and traffic laws.


HINT:

Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.



Result:
Proceed to
OK
NG



OK

SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE)

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

INSPECT AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>TERMINALS OF ECU


7.PAST ACTIVATION CONFIRMATION
a.

Check if the customer operated the vehicle in a way that would cause the drive start control to operate.

HINT:
Drive Start Control Activation Conditions
Shift control

Activation conditions


·

Pattern A (When all of the following conditions are met, control starts.)

-

The accelerator pedal is open by approximately 1/5 or more.

-

The shift lever is moved from P to any forward position (D or S) or R.



·

Pattern B (When all of the following conditions are met, control starts.)

-

The accelerator pedal is open by approximately 1/5 or more.

-

The shift lever is moved from R to any forward position (D or S), any forward position (D or S) to R, or N to R.

A407226E40
3.063,0.99 3.531,0.458 3.531,0.458 3.677,0.458 false 2.625,1.708 4.771,1.417 4.771,1.417 4.896,1.417 true 4.073,3.052 4.448,2.573 4.448,2.573 4.656,2.573 false 4.063,3.531 4.844,3.083 4.844,3.083 4.969,3.083 true 4.563,3.958 5.052,3.531 5.052,3.531 5.219,3.531 false 3.729,0.396 6.323,0.708 2.594,0.313 10 false Shift operation of pattern A or pattern B 1.021,1.198 2.74,1.49 1.719,0.292 10 false Shift Lever Position 0.854,1.625 2.479,1.896 1.625,0.271 10 false Accelerator Pedal ON 0.792,1.948 2.479,2.24 1.688,0.292 10 false Accelerator Pedal OFF 4.938,1.333 6.677,1.844 1.74,0.51 10 false Accelerator pedal is open by approximately 1/5 or more. 2.792,2.344 4,2.708 1.208,0.365 10 false Activated 1.208,3.302 2.427,3.625 1.219,0.323 10 false Engine Output 4.719,2.479 6,2.802 1.281,0.323 10 false without control 5.021,3.021 5.823,3.375 0.802,0.354 10 false Restricted 5.281,3.458 6.25,3.802 0.969,0.344 10 false with control * 3.208,4.104 3.719,4.417 0.51,0.313 10 false Time 4.552,4.094 7.083,4.552 2.531,0.458 10 false *: The engine output restricted level differs between pattern A and pattern B.



·

Items Controlled

-

Engine output is restricted.



·

Deactivation Conditions

-

The accelerator pedal is released.

-

The shift lever is in P or N.



Reverse control

Activation conditions


·

The shift lever is in R.

·

The accelerator pedal is depressed excessively.

A407227E41
3.313,1.333 5.094,0.938 5.094,0.938 5.271,0.938 false 4.438,2.906 4.823,2.375 4.823,2.375 4.99,2.375 false 4.188,3.26 5.125,2.885 5.125,2.885 5.271,2.885 true 4.74,3.542 5.219,3.271 5.219,3.271 5.385,3.271 false 1.219,0.781 2.729,1.167 1.51,0.385 10 false Shift Lever Position 2.781,0.781 2.938,0.979 0.156,0.198 10 false R 1.083,1.25 2.76,1.594 1.677,0.344 10 false Accelerator Pedal ON 1.01,1.646 2.667,2.042 1.656,0.396 10 false Accelerator Pedal OFF 5.302,0.875 7,1.281 1.698,0.406 10 false When the accelerator pedal is suddenly depressed. 2.896,2.24 3.625,2.542 0.729,0.302 10 false Activated 1.49,3.115 2.667,3.458 1.177,0.344 10 false Engine Output 5.031,2.281 6.156,2.594 1.125,0.313 10 false without control 5.323,2.802 6.073,3.104 0.75,0.302 10 false Restricted 5.438,3.177 6.375,3.49 0.938,0.313 10 false with control 3.802,3.969 4.375,4.281 0.573,0.313 10 false Time


·

Items Controlled

-

Engine output is restricted.



·

Deactivation Conditions

-

The accelerator pedal is released.

-

The shift lever is moved to any position other than R.




HINT:
·

The engine output restricted level differs between pattern A, pattern B and Reverse control.

·

During reverse control or shift control, engine output is adjusted based on the road gradient.




Result:
Result Proceed to
Performed A
Not performed B



A

SYSTEM NORMAL

B

8.CHECK DTC OUTPUT
8.CHECK DTC OUTPUT
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 the DTCs.


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



A

9.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

B

GO TO DTC CHART

9.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Inspect the park/neutral position switch assembly.

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>PARK / NEUTRAL POSITION SWITCH>INSPECTION


Result:
Result Proceed to
Normal A
Abnormal B



A

10.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE % AND NO. 2 VOLTAGE %)

B

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>AC60E (AUTOMATIC TRANSMISSION / TRANSAXLE)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


10.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE % AND NO. 2 VOLTAGE %)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Accelerator Position Sensor No.1 Voltage % and Accelerator Position Sensor No.2 Voltage %.

Powertrain > Engine > Data List
Tester Display
Accelerator Position Sensor No.1 Voltage %
Accelerator Position Sensor No.2 Voltage %
50003 372 256,257

e.

Read the value displayed on the GTS.

OK:
GTS Display Condition Specified Condition
Accelerator Position Sensor No.1 Voltage % Accelerator Pedal Released → Depressed Values smoothly change following accelerator pedal operation
Accelerator Position Sensor No.2 Voltage %


HINT:

For numerical values of Accelerator Position Sensor No.1 Voltage % and Accelerator Position Sensor No.2 Voltage %, refer to the Data List.

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>DATA LIST / ACTIVE TEST



Result:
Proceed to
OK
NG



OK

SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE)

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPLACE ACCELERATOR PEDAL(W/SENSOR) ROD ASSEMBLY

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>ACCELERATOR PEDAL>REMOVAL