STOP AND START STOP AND START SYSTEM P061511 Starter Relay Circuit Short to Ground
DESCRIPTION
When the engine is started by stop and start control, the engine stop and start ECU controls the starter assembly by activating the ST NO. 1 relay via voltage from terminal STA.
If overcurrent is detected in the starter relay circuit, the engine stop and start ECU stores DTC P061519 and blinks the stop and start cancel indicator.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory | Note |
|---|---|---|---|---|---|---|
| P061511 | Starter Relay Circuit Short to Ground | Both of the following conditions are met for 1 second (1 trip detection logic):
·
Ignition switch ON. ·
Overcurrent to ST NO. 1 relay is detected. |
·
Wire harness or connector ·
ST NO. 1 relay ·
Engine stop and start ECU |
Blinks | DTC stored | SAE Code: P0617 |
CONFIRMATION DRIVING PATTERN
CONFIRMATION AFTER TROUBLESHOOTING
- HINT:
- ·
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.
- Powertrain > Stop and Start > Clear DTCs
- 50002 392
Start the engine and warm it up.
Drive the vehicle at 7 km/h (4 mph) or more.
- CAUTION:
-
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 for 1 second or more. (Keep the shift lever in D.)
Release the brake pedal with the shift lever in D to start the engine.
Check that DTCs are not output.
- Powertrain > Stop and Start > Trouble Codes
- 50001 392
STOP AND START SYSTEM OPERATION CHECK
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
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 ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.
·Bleed the oil pump with motor assembly (continuously variable transaxle assembly) after removing and installing the continuously variable transaxle assembly or replacing the CVT fluid.
·Inspect the fuses for circuits related to this system before performing the following procedure.
- HINT:
- ·
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.
PROCEDURE
Disconnect the engine stop and start ECU connector.
Remove the BBC NO. 1 fuse and BBC NO. 2 fuse 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.
- Standard Resistance:
Tester Connection Condition Specified Condition A33-1 (BIN2) - BBC NO. 2 fuse terminal 2 Always Below 1 Ω A33-3 (BIN1) - BBC NO. 1 fuse terminal 2 Always Below 1 Ω A33-1 (BIN2) or BBC NO. 2 fuse terminal 2 - Body ground and other terminals Always 10 kΩ or higher A33-3 (BIN1) or BBC NO. 1 fuse terminal 2 - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the engine stop and start ECU connectors.
Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Disconnect the certification ECU (smart key ECU assembly) connector. (w/ Smart Entry and Start System)
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A34-21 (STA) - 2 (ST NO. 1 relay) Always Below 1 Ω A34-21 (STA) or 2 (ST NO. 1 relay) - Body ground and other terminals Always 10 kΩ or higher A33-1 (BIN2) - A34-21 (STA) Always 10 kΩ or higher A33-3 (BIN1) - A34-21 (STA) Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Component without harness connected
(Engine Stop and Start ECU) |
- | - |
Disconnect the engine stop and start ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A34-21 (STA) - A34-6 (DGND) Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Inspect the ST NO. 1 relay.
- Result:
Proceed to OK NG
OK
NG