DESCRIPTION
The drive start control is controlled by the hybrid vehicle control ECU.
If the hybrid vehicle control ECU determines that the shift lever and accelerator pedal are operated abnormally, hybrid system output is restricted and, when necessary, a warning is displayed on the combination meter assembly.
CAUTION / NOTICE / HINT
HINT:
Even if the accelerator pedal position is maintained, the hybrid system output may increase when driving uphill and decrease when driving downhill. This is due to drive start control controlling the hybrid system output, and is not a malfunction.
PROCEDURE
1. | SYMPTOM CONFIRMATION |
(a) Interview the customer to confirm the problem.
Result | Proceed to |
---|---|
Hunting | A |
Hesitation/poor acceleration | B |
B | GO TO STEP 8 |
|
2. | PAST ACTIVATION CONFIRMATION |
(a) Check if the customer operated the vehicle in a way that would cause the drive start control to operate.
Drive Start Control Activation ConditionsHINT:
Result | Proceed to |
---|---|
Performed | A |
Not performed | B |
B | SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) |
|
3. | CHECK DTC OUTPUT (HEALTH CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: System Select / Health Check.
(e) Check the DTCs.
(f) Turn the power switch off.
Result | Proceed to |
---|---|
DTCs are not output | A |
DTC is output | B |
B | GO TO DTC CHART |
|
4. | READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (READY).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.
Chassis > ABS/VSC/TRAC > Data List Tester Display |
---|
FR Wheel Speed |
FL Wheel Speed |
RR Wheel Speed |
RL Wheel Speed |
(e) Read the values displayed on the Techstream.
Standard:
Condition | Specified Condition |
---|---|
Vehicle stopped | 0 km/h (0 mph) |
Vehicle being driven at constant speed between 16 to 64 km/h (10 to 40 mph) | No large fluctuations when driving at a constant speed |
CAUTION:
When performing the confirmation driving pattern, 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.
(f) Turn the power switch off.
NG | INSPECT FRONT OR REAR SPEED SENSOR |
|
5. | READ VALUE USING TECHSTREAM (VEHICLE SPEED) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (READY).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Vehicle Speed.
Powertrain > Hybrid Control > Data List Tester Display |
---|
Vehicle Speed |
(e) Read the value displayed on the Techstream.
Standard:
Inspection Condition | Specified Condition |
---|---|
Vehicle stopped | 0 km/h (0 mph) |
Vehicle being driven at a constant speed (16 to 64 km/h (10 to 40 mph)) | No large fluctuations in displayed speed |
CAUTION:
Perform this road test only in an appropriate safe location, in accordance with all local 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.
(f) Turn the power switch off.
NG | INSPECT ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
6. | READ VALUE USING TECHSTREAM (DECELERATION SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (READY).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Deceleration Sensor, Deceleration Sensor2.
Chassis > ABS/VSC/TRAC > Data List Tester Display |
---|
Deceleration Sensor |
Deceleration Sensor2 |
(e) Read the values displayed on the Techstream.
Standard:
Condition | Specified Condition |
---|---|
During deceleration | Values change with vehicle speed |
CAUTION:
When performing the confirmation driving pattern, 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.
(f) Turn the power switch off.
NG | INSPECT AIR BAG ECU ASSEMBLY (YAW RATE SENSOR) |
|
7. | READ VALUE USING TECHSTREAM (STEERING ANGLE SENSOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (READY).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Steering Angle Sensor.
Chassis > ABS/VSC/TRAC > Data List Tester Display |
---|
Steering Angle Sensor |
(e) Read the value displayed on the Techstream.
Standard:
Condition | Specified Condition |
---|---|
Steering wheel turned left | Value increases with steering wheel operation |
Steering wheel turned right | Value decreases with steering wheel operation |
CAUTION:
When performing the confirmation driving pattern, 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.
(f) Turn the power switch off.
OK | SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) |
NG | INSPECT STEERING ANGLE SENSOR |
8. | PAST ACTIVATION CONFIRMATION |
(a) Check if the customer operated the vehicle in a way that would cause the drive start control to operate.
Drive Start Control Activation ConditionsHINT:
Result | Proceed to |
---|---|
Not performed | A |
Performed | B |
HINT:
If the customer operated the vehicle in a way which caused the drive start control to operate, explain the operation of the system to the customer and that the operation is not a malfunction.
B | SYSTEM NORMAL |
|
9. | CHECK DTC OUTPUT (HEALTH CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: System Select / Health Check.
(e) Check the DTCs.
Result | Proceed to |
---|---|
DTCs are not output | A |
DTC is output | B |
(f) Turn the power switch off.
B | GO TO DTC CHART |
|
10. | INSPECT SHIFT LEVER POSITION SENSOR |
(a) Inspect the shift lever position sensor.
Click here
Result | Proceed to |
---|---|
Normal | A |
Abnormal | B |
B | REPLACE SHIFT LEVER POSITION SENSOR |
|
11. | READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %) |
Click here
OK | SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) |
NG | REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY |