RM38N0EC _51 Engine / Hybrid System _111785 M20C-FKS, M20D-FKS ENGINE CONTROL _0504416 SFI SYSTEM J

M20C-FKS, M20D-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.

A487375E15
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 0.396,1.448 2.365,2.375 1.969,0.927 10 false Airbag Sensor Assembly 2.677,2.198 4.073,2.615 1.396,0.417 10 false Vehicle Acceleration 0.385,3.135 2.271,3.698 1.885,0.563 10 false Shift Position Switch 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 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 5.698,4.302 6.635,4.854 0.938,0.552 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.PAST ACTIVATION CONFIRMATION
a.

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

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 (including other forward shift positions) 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 (including other forward shift positions), any forward position D (including other forward shift positions) to R, or N to R.



HINT:

Depending on the situation, the shift position may not be changed.


A407226E34
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 1.323,3.302 2.542,3.625 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 7.104,4.583 2.552,0.479 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.



HINT:
·

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

·

During sudden start restraint control, engine output is adjusted based on the road gradient

·

Drive start control is not activated when TRC is turned off.

·

Control will also not operate under the following conditions. (if equipped)

-

When in auto LSD mode

-

When the transfer switch is operated to switch the status to L4

-

When the center differential is locked

-

When multi-terrain select is selected

-

When TRAIL mode is on

-

When multi-terrain select is selected




Result:
Result Proceed to
Not performed A
Performed B




A

2.CHECK DTC OUTPUT (HEALTH CHECK)

B

SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


2.CHECK DTC OUTPUT (HEALTH CHECK)
a.

Perform the Health Check using the GTS.


b.

Read the DTCs.

Result:
Result Proceed to
DTCs are not output (Hunting) A
DTCs are not output (Hesitation/poor acceleration) B
DTCs are output C




A

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

B

5.INSPECT SHIFT LEVER POSITION SENSOR

C

GO TO DTC CHART

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

Start the engine.


b.

Read the value displayed on the GTS.

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

c.

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

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

NG

INSPECT FRONT OR REAR SPEED SENSOR

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

Start the engine.


b.

Read the value displayed on the GTS.

Chassis > Brake/EPB > Data List
Tester Display
Forward and Rearward G
50003 435 26
Standard:
GTS Display Condition Specified Condition
Forward and Rearward G During deceleration Value changes with vehicle speed
During acceleration 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>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

INSPECT AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


5.INSPECT SHIFT LEVER POSITION SENSOR
a.

Inspect the shift lever position sensor.

Click hereDrivetrain>K120 / K120F / K121 / K121F (CVT)>K121 / K121F SHIFT LEVER POSITION SENSOR>INSPECTION


Result:
Result Proceed to
Normal A
Abnormal B



A

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

B

REPLACE SHIFT LEVER POSITION SENSOR

Click hereDrivetrain>K120 / K120F / K121 / K121F (CVT)>K121 / K121F SHIFT LEVER POSITION SENSOR>REMOVAL


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

Read the value displayed on the GTS.

Powertrain > Engine > Data List
Tester Display
Accelerator Position Sensor No.1 Voltage %
Accelerator Position Sensor No.2 Voltage %
50003 372 256,257
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>M20C-FKS, M20D-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>M20C-FKS, M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPLACE ACCELERATOR PEDAL(W/SENSOR) ROD ASSEMBLY

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