STOP AND START STOP AND START SYSTEM P0C2B15 Auxiliary Transmission Fluid Pump Control Module Feedback Signal Circuit Short to Battery or Open
DESCRIPTION
Refer to DTC P0C2B11.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory | Note |
|---|---|---|---|---|---|---|
| P0C2B15 | Auxiliary Transmission Fluid Pump Control Module Feedback Signal Circuit Short to Battery or Open | Both of the following conditions are met for 1 second or more (2 trip detection logic):
·
Engine started ·
Oil Pump with Motor Assembly (Continuously Variable Transaxle Assembly) circuit malfunction (Oil pump motor relay in the engine stop and start ECU stuck off, open or short to ground in the OP21, OPM1 or NOPM circuit or an open in the GND circuit) |
·
Wire harness or connector ·
Oil pump with motor assembly (Continuously variable transaxle assembly) ·
Engine stop and start ECU |
Blinks | DTC stored | SAE Code: P0C2E |
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. (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.
- Powertrain > Stop and Start > Trouble Codes
- 50001 392
STOP AND START SYSTEM OPERATION CHECK
WIRING DIAGRAM
Refer to DTC P0C2B11.
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.
- 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
Drive the vehicle to warm up the engine and CVT fluid.
- HINT:
-
The oil pump with motor assembly (continuously variable transaxle assembly) may not operate properly if the CVT fluid temperature is low. Make sure to warm up the CVT fluid before performing the Active Test. (CVT fluid temperature: 25°C (77°F) or higher)
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
- HINT:
-
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Active Test / Oil Pump.
- Powertrain > Stop and Start > Active Test
-
Tester Display Oil Pump - 50004 392 42020
Check the operating sound of the oil pump with motor assembly (continuously variable transaxle assembly) while performing the Active Test.
- Standard:
Oil Pump Result ON Operating sound can be heard OFF Operating sound cannot be heard
- Result:
Proceed to OK NG
OK
NG
Connect an oscilloscope to terminals NOPM and DGND of the engine stop and start ECU connector.
| *a | Component with harness connected
(Engine Stop and Start ECU) |
- | - |
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
- HINT:
-
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Active Test / Oil Pump.
- Powertrain > Stop and Start > Active Test
-
Tester Display Oil Pump - 50004 392 42020
Check the waveform while performing the Active Test.
| Item | Condition |
|---|---|
| Tester Connection | A34-27 (NOPM) - A34-6 (DGND) |
| Tool Setting | 5 V/DIV., 5 ms./DIV. |
| Condition | ·
Ignition switch ON (engine is stopped) ·
Active Test "Oil Pump" being performed |
- Standard:
The waveform is similar to that shown in the illustration with no noise.
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Oil Pump with Motor Assembly (Continuously Variable Transaxle Assembly)) |
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition C48-2 (OPST) - C48-1 (GND) Ignition switch ON 10 to 14 V
- Result:
Proceed to OK NG
OK
NG
Disconnect the engine stop and start ECU connector.
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A34-27 (NOPM) - C48-2 (OPST) Always Below 1 Ω A34-27 (NOPM) or C48-2 (OPST) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the engine stop and start ECU connector.
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A33-6 (OP21) - C48-4 (+B) Always Below 1 Ω A33-6 (OP21) or C48-4 (+B) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C48-1 (GND) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
| *a | Component with harness connected
(Engine Stop and Start ECU) |
- | - |
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
- HINT:
-
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Active Test / Oil Pump.
- Powertrain > Stop and Start > Active Test
-
Tester Display Oil Pump - 50004 392 42020
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition A33-6 (OP21) - A34-6 (DGND) ·Ignition switch ON (engine is stopped)
·Active Test "Oil Pump" being performed
10.5 to 16 V
- Result:
Proceed to OK NG
OK
NG
Disconnect the engine stop and start ECU connector.
Disconnect the oil pump with motor assembly (continuously variable transaxle assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A34-9 (OPM1) - C48-3 (SI) Always Below 1 Ω A34-9 (OPM1) or C48-3 (SI) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect an oscilloscope to the OPM1 and DGND terminals of the engine stop and start ECU connector.
| *a | Component with harness connected
(Engine Stop and Start ECU) |
- | - |
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
- HINT:
-
Do not start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Stop and Start / Active Test / Oil Pump.
- Powertrain > Stop and Start > Active Test
-
Tester Display Oil Pump - 50004 392 42020
Check the waveform while performing the Active Test.
| Item | Condition |
|---|---|
| Tester Connection | A34-9 (OPM1) - A34-6 (DGND) |
| Tool Setting | 5 V/DIV., 5 ms./DIV. |
| Condition | ·
Ignition switch ON (engine is stopped) ·
Active Test "Oil Pump" being performed |
- Standard:
The waveform is similar to that shown in the illustration with no noise.
- Result:
Proceed to OK NG
OK
NG