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 P061515 and blinks the stop and start cancel indicator.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Note |
|---|---|---|---|---|---|
| P061515 | Starter Relay Circuit Short to Battery or Open | Both of the following conditions aremet for 2 seconds or more (1 tripdetection logic):
·
Normal communication with theECM. ·
The STA signal detected by theECM and engine stop and startECU do not match. |
·
Wire harness or connector ·
ST NO. 1 relay ·
Engine stop and start ECU |
Does not come on | SAE Code: P0617 |
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.
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 (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 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 (4.3 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
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.
When the ECM is replaced on a vehicle with a non-specified battery, it is necessary to perform battery type switching.
After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).
Inspect the fuses for circuits related to this system before performing the following procedure.
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.
Read the values displayed on the GTS when the ignition switch is ON and START.
| Tester Display |
|---|
| Engine Starter Signal |
| Tester Display | Condition | Normal Condition |
|---|---|---|
| Engine Starter Signal | Ignition switch ON | OFF |
| Ignition switch START | ON |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check if the stop and start system operates.
| Result | Proceed to |
|---|---|
| OPERATES | A |
| DOES NOT OPERATE | B |
A
Refer to HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
B
Clear the DTC.
| Proceed to |
|---|
| NEXT |
Turn the ignition switch off and wait for 30 seconds or more.
NEXT
Check if the stop and start system operates.
| Result | Proceed to |
|---|---|
| OPERATES | A |
| DOES NOT OPERATE | B |
A
Refer to HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
B
Read the DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| P061515 is output | B |
A
B
Disconnect the engine stop and start ECU connector.
Disconnect the ECM connector.
Disconnect the certification ECU (smart key ECU assembly) connector.
Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(A109,A106)Location & Routingewd_type=routing;type=c,c;code=A109,A106 Click Connector(A109)Engine Compartment>Engine Room Main Wire / Transmission Wire>ECMewd_type=component;type=c;code=A109;pinno=18 Click Connector(A106)Instrument Panel>Engine Room Main Wire>Engine Stop and Start ECUewd_type=component;type=c;code=A106;pinno=21 |
||
| A109-18 (STA) - ST NO. 1 relay terminal 2 | Always | Below 1 Ω |
| A106-21 (STA) - A109-18 (STA) | Always | Below 1 Ω |
| A109-18 (STA) - Body ground | Always | 10 kΩ or higher |
| A106-21 (STA) - Body ground | Always | 10 kΩ or higher |
| ST NO. 1 relay terminal 2 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| ST NO. 1 relay terminal 1 - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG