The engine stop and start ECU stores the number of starter operations, total number of engine starts, air conditioning information, and the deceleration sensor zero point learning results.
If the engine stop and start ECU cannot write the number of starter operations, total number of engine starts, air conditioning information, or the deceleration sensor zero point learning results, it stores DTC P062F46, blinks the stop and start cancel indicator, and prohibits stop and start control.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory | Note |
|---|---|---|---|---|---|---|
| P062F46 | Internal Control Module EEPROM Calibration / Parameter Memory Failure | Any of the following conditions are met (1 trip detection logic):
·
Air conditioning information cannot be written. ·
The deceleration sensor zero point learning value cannot be written. ·
The number of starter operations and the total number of engine starts was not successfully written to the EEPROM. |
Engine stop and start ECU | Blinks | DTC stored | SAE Code: P062F |
CONFIRMATION AFTER TROUBLESHOOTING
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
If the GTS is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
Start the engine and warm it up.
Drive the vehicle at 7 km/h (4 mph) or more.
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
for Automatic Transmission:
Depress the brake pedal and stop the vehicle.
for Manual Transmission:
Stop the vehicle, move the shift lever to neutral and release the clutch pedal.
Keep the engine stopped by stop and start control for 1 second or more. (for Automatic Transmission: Keep the shift lever in D.)
for Automatic Transmission:
Release the brake pedal with the shift lever in D to start the engine.
for Manual Transmission:
Depress the clutch pedal and start the engine.
Check that DTCs are not output.
STOP AND START SYSTEM OPERATION CHECK
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
If the GTS is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
Start the engine and warm it up.
Turn the air conditioning system off.
Drive the vehicle at 7 km/h (4 mph) or more.
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
for Automatic Transmission:
Depress the brake pedal and stop the vehicle.
for Manual Transmission:
Stop the vehicle, move the shift lever to neutral and release the clutch pedal.
Allow the engine to stop by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)
for Automatic Transmission:
Release the brake pedal with the shift lever in D to start the engine.
for Manual Transmission:
Depress the clutch pedal and start the engine.
Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.
After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.
After replacing the engine stop and start ECU or airbag sensor assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.
for Automatic Transmission:
When the engine stop and start ECU or electromagnetic oil pump is replaced, check the electromagnetic oil pump.
Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.
DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Utility / ECU Exchange.
| Tester Display |
|---|
| ECU Exchange |
According to the display on the GTS, select "Step 1 Save" and then "Next" to download the ECU data from the engine stop and start ECU.
| Proceed to |
|---|
| NEXT |
NEXT
Enter the following menus: Powertrain / Stop and Start / Trouble Codes.
Clear the DTCs.
| Proceed to |
|---|
| NEXT |
NEXT
Clear the number of starter operations.
Enter the following menus: Powertrain / Stop and Start / Utility / Starter Exchange.
| Tester Display |
|---|
| Starter Exchange |
Clear the air conditioning information.
Enter the following menus: Powertrain / Stop and Start / Utility / Reset A/C Information.
| Tester Display |
|---|
| Reset A/C Information |
Clear the zero point calibration data of the deceleration sensor.
Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Clear.
| Tester Display |
|---|
| Deceleration Sensor Zero Point Clear |
| Proceed to |
|---|
| NEXT |
NEXT
Enter the following menus: Powertrain / Stop and Start / Utility / ECU Exchange.
| Tester Display |
|---|
| ECU Exchange |
According to the display on the GTS, select "Step 3 Write" and then "Next" to write the ECU data to the new engine stop and start ECU.
Perform air conditioning information learning.
When initialization of the air conditioning information is complete, air conditioning information learning is automatically performed.
Perform deceleration sensor zero point calibration.
Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Calibration.
| Tester Display |
|---|
| Deceleration Sensor Zero Point Calibration |
| Proceed to |
|---|
| NEXT |
NEXT
Start the engine and warm it up.
Turn the air conditioning system off.
Drive the vehicle at 7 km/h (4 mph) or more.
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
for Automatic Transmission:
Depress the brake pedal and stop the vehicle.
for Manual Transmission:
Stop the vehicle, move the shift lever to neutral and release the clutch pedal.
Allow the engine to stop by stop and start control. (for Automatic Transmission: Keep the shift lever in D.)
for Automatic Transmission:
Release the brake pedal with the shift lever in D to start the engine.
for Manual Transmission:
Depress the clutch pedal and start the engine.
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTC P062F46 is output | B |
A
B