| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001OBBU |
| Model Year Start: 2020 | Model: RAV4 HV | Prod Date Range: [06/2020 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): Drive Start Control; 2020 - 2024 MY RAV4 HV [06/2020 - ] | ||
|
Drive Start Control |
DESCRIPTION
The drive start control is controlled by the hybrid vehicle control ECU assembly.
If the hybrid vehicle control ECU assembly 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 |
|
|
|
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 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 (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 (D or S), from (D or S) or N to R.
-
Items Controlled
- Hybrid system 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.
-
Items Controlled
- Hybrid system output is restricted.
-
Deactivation Conditions
- The accelerator pedal is released.
- The shift lever is moved to any position other than R.
HINT:
- The hybrid system output restricted level differs between Pattern A, Pattern B and Reverse control.
- During Shift control or Reverse control, hybrid system output is adjusted based on the road gradient.
Result |
Proceed to |
|---|---|
Performed |
A |
Not performed |
B |
| B |
|
|
|
3. |
CHECK DTC OUTPUT (HEALTH CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: System Select / Health Check.
(e) Check the DTCs.
(f) Turn the ignition 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 ignition switch to 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:
|
Tester Display |
Condition |
Specified Condition |
|---|---|---|
|
FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed |
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 ignition 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 ignition switch to 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 of "Vehicle Speed" 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 ignition 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 ignition switch to ON (READY).
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Deceleration Sensor and Deceleration Sensor2.
Chassis > ABS/VSC/TRAC > Data List
|
Tester Display |
|---|
|
Deceleration Sensor |
|
Deceleration Sensor2 |
(e) Read the value displayed on the Techstream.
Standard:
|
Tester Display |
Condition |
Specified Condition |
|---|---|---|
|
Deceleration Sensor Deceleration Sensor2 |
During deceleration |
Value changes with vehicle speed |
|
During acceleration |
Value changes 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 ignition switch off.
| OK |
|
| NG |
|
INSPECT YAW RATE SENSOR
|
|
7. |
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 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 (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 (D or S), from (D or S) or N to R.
-
Items Controlled
- Hybrid system 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.
-
Items Controlled
- Hybrid system output is restricted.
-
Deactivation Conditions
- The accelerator pedal is released.
- The shift lever is moved to any position other than R.
HINT:
- The hybrid system output restricted level differs between Pattern A, Pattern B and Reverse control.
- During Shift control or Reverse control, hybrid system output is adjusted based on the road gradient.
|
Result |
Proceed to |
|---|---|
|
Not performed |
A |
|
Performed |
B |
| B |
|
SYSTEM NORMAL 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. |
|
|
8. |
CHECK DTC OUTPUT (HEALTH CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to.
(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 ignition switch off.
| B |
|
GO TO DTC CHART |
|
|
9. |
INSPECT SHIFT LEVER POSITION SENSOR |
(a) Inspect the shift lever position sensor.
Click here
![2019 - 2024 MY RAV4 HV [11/2018 - ]; P710 (HYBRID TRANSMISSION / TRANSAXLE): SHIFT LEVER POSITION SENSOR: INSPECTION](/t3Portal/stylegraphics/info.gif)
Result |
Proceed to |
|---|---|
|
Normal |
A |
|
Abnormal |
B |
| B |
|
|
|
10. |
READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Accelerator Position Sensor No.1 Voltage %, Accelerator Position Sensor No.2 Voltage %.
Powertrain > Hybrid Control > Data List
|
Tester Display |
|---|
|
Accelerator Position Sensor No.1 Voltage % |
|
Accelerator Position Sensor No.2 Voltage % |
(e) Read the value displayed on the Techstream.
OK:
|
Condition |
Specified Condition |
|---|---|
|
Accelerator Pedal Released → Depressed |
Values smoothly change following accelerator pedal operation |
(f) Turn the ignition switch off.
| OK |
|
| NG |
|
|
|