Drive Start Control [10/2023 - ]: Procedure
- PAST ACTIVATION CONFIRMATION
- 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.
- 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 TRAIL mode is on
- When multi-terrain select is selected
Result
Result Proceed to Not performed A Performed B - Pattern A (When all of the following conditions are met, control starts.)
Result:
B
SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to PROBLEM SYMPTOMS TABLE [12/2017 - ]
Result:
A
See step 2
- Check if the customer operated the vehicle in a way that would cause the drive start control to operate.
- CHECK DTC OUTPUT (HEALTH CHECK)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: System Select / Health Check.
- Check for DTCs.
Result
Result Proceed to DTCs are not output (Hunting) A DTCs are not output (Hesitation/poor acceleration) B DTCs are output C
Result:
B
See step 5
Result:
C
GO TO DTC CHART
Result:
A
See step 3
- READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Start the engine.
- 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 - Read the value displayed on the Techstream.
Standard
Condition Specified Condition 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 WARNING: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
Result:
NG
INSPECT FRONT OR REAR SPEED SENSOR
Result:
OK
See step 4
- READ VALUE USING TECHSTREAM (FORWARD AND REARWARD G)
- Connect the Techstream to the DLC3.
- Start the engine.
- Turn the Techstream on.
- Enter the following menus: Chassis / Brake / Data List / Forward and Rearward G.
Chassis > Brake > Data List
Tester Display Forward and Rearward G - Read the value displayed on the Techstream.
Standard
Condition Specified Condition During deceleration Changes continuously During acceleration Changes continuously WARNING: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
Result:
OK
SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to PROBLEM SYMPTOMS TABLE [12/2017 - ]
Result:
NG
INSPECT YAW RATE SENSOR. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]
- READ VALUE USING TECHSTREAM (SHIFT POSITION)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Transmission / Data List / Shift Position (Current Position).
Powertrain > Transmission > Data List
Tester Display Shift Position (Current Position) - Read the value displayed on the Techstream.
Standard
Condition Specified Condition Select shift state Matches currently selected shift state Result
Proceed to OK NG
Result:
NG
GO TO ELECTRONIC SHIFT LEVER SYSTEM
for 2WD: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - ]
for AWD: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - ]
Result:
OK
See step 6
- READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE % AND NO. 2 VOLTAGE %)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- 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 % - Read the value displayed on the Techstream.
Standard
Condition Specified Condition Accelerator Pedal Released → Depressed Changes continuously Result
Proceed to OK NG
Result:
OK
SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to PROBLEM SYMPTOMS TABLE [12/2017 - ]
Result:
NG
REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to REMOVAL [12/2017 - ]