When the STA signal detected by the ECM and by the engine stop and start ECU do not match, the engine stop and start ECU stores DTC P061562 and blinks the stop and start cancel indicator.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Note |
|---|---|---|---|---|---|
| P061562 | Starter Relay Signal Compare Failure | Both of the following conditions are met for 2 seconds or more (1 trip detection logic):
·
Normal communication with the ECM. ·
The STA signal detected by the ECM and engine stop and start ECU do not match. |
·
Wire harness or connector ·
ST relay ·
ECM ·
Engine stop and start ECU |
Blinks | SAE Code: P0615 |
CONFIRMATION AFTER TROUBLESHOOTING
If the cable is disconnected from the auxiliary 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 auxiliary battery fluid temperature at 11°C (52°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 auxiliary 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.
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.
Depress the brake pedal and stop the vehicle.
Keep the engine stopped by stop and start control. (Keep the shift lever in D.)
Release the brake pedal with the shift lever in D to start the engine.
Check that no DTCs are output.
STOP AND START SYSTEM OPERATION CHECK
Refer to DTC P061519.
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, perform learning of the external backup boost converter (eco run vehicle converter assembly).
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.
Inspect the fuses for circuits related to this system before performing the following procedure.
When the ECM is replaced on a vehicle with a non-specified auxiliary battery, it is necessary to perform auxiliary battery type switching.
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.
For wire harness and connector inspection procedures and precautions, refer toGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING202201,999999,_V1,_107171,_0496334,RM100000001YK2G,
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.
Enter the following menus.
| Tester Display |
|---|
| Engine Starter Signal |
Read the values displayed on the GTS when the ignition switch is ON and START.
| GTS Display | Condition | Normal Condition |
|---|---|---|
| Engine Starter Signal | Ignition switch ON | OFF |
| Engine Starter Signal | Ignition switch START | ON |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Enter the following menus.
| Tester Display |
|---|
| Starter SW |
Read the values displayed on the GTS when the ignition switch is ON and START.
| GTS Display | Condition | Normal Condition |
|---|---|---|
| Starter SW | Ignition switch ON | OFF |
| Starter SW | Ignition switch START | ON |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the I223 certification ECU (smart key ECU assembly) connector.*1
*1: w/ Smart Entry and Start System
Disconnect the A182 ECM connector.
Disconnect the A168 and A169 engine stop and start ECU connectors.
Remove the ST relay from the No. 1 engine room relay block.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A182-18 (STA) - ST relay terminal 2 | Always | Below 1 Ω |
| A182-18 (STA) -Body ground and other terminals | Always | 10 kΩ or higher |
| ST relay terminal 2 - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the I223 certification ECU (smart key ECU assembly) connector.*1
*1: w/ Smart Entry and Start System
Disconnect the A182 ECM connector.
Disconnect the A168 and A169 engine stop and start ECU connectors.
Remove the ST relay from the No. 1 engine room relay block.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A169-21 (STA) - ST relay terminal 2 | Always | Below 1 Ω |
| A182-18 (STA) - ST relay terminal 2 | Always | Below 1 Ω |
| A169-21 (STA) - A182-18 (STA) | Always | Below 1 Ω |
| A169-21 (STA) - Body ground and other terminals | Always | 10 kΩ or higher |
| A182-18 (STA) -Body ground and other terminals | Always | 10 kΩ or higher |
| ST relay terminal 2 - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the ST relay from the No. 1 engine room relay block.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| ST relay terminal 1 - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG