RM36D0EC _51 Engine / Hybrid System _087036 M20C-FKS ENGINE CONTROL _0418131 SFI SYSTEM C

M20C-FKS ENGINE CONTROL  SFI SYSTEM  P050A00  Cold Start Idle Control System Performance  


MONITOR DESCRIPTION

A monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). If certain conditions are met, a DTC will be stored after the engine idles for 12 seconds (2 trip detection logic).

This DTC is designed to monitor the idle air control at cold start. When the engine is started at an engine coolant temperature of less than 50°C (122°F), the ECM measures the accumulated mass air flow during engine idling. If the accumulated mass air flow does not reach the specified level within 10 seconds, the ECM interprets this as a malfunction, illuminates the MIL and stores this DTC.

The electronic throttle control system controls the idle speed. The electronic throttle control system operates the throttle actuator to open and close the throttle valve, and adjusts the intake air amount to achieve the target idle speed.

NOTICE:

The idle speed control learned values are cleared by performing learning value reset. Idle speed control learning needs to be performed before this DTC can be stored.


HINT:

Idle speed control learning is performed when the engine is warmed up and has been idling for 5 minutes.


A234891E39
2.573,2.656 2.229,2.917 false 0.083,0.052 1.885,0.24 1.802,0.188 10 false P050A00 Detection Logic: 1.396,2.865 2.26,3.073 0.865,0.208 10 false Engine Start 4.75,1.052 6.354,1.208 1.604,0.156 10 false Pass Condition Detected 4.75,2.073 5.542,2.25 0.792,0.177 10 false Malfunction 2.115,2.542 2.271,2.719 0.156,0.177 10 false 0 2.938,2.917 3.635,3.083 0.698,0.167 10 false 2 seconds 4.604,2.917 5.365,3.083 0.76,0.167 10 false 12 seconds 4.885,2.573 5.208,2.75 0.323,0.177 10 false Time 4.75,1.573 5.438,1.729 0.688,0.156 10 false Threshold 1.344,0.76 2.302,1.198 0.958,0.438 10 false Accumulate Mass Air Flow 2.208,3.323 4.979,3.552 2.771,0.229 10 false Engine Coolant Temperature: -10 to 50°C

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P050A00 Cold Start Idle Control System Performance Insufficient mass air flow after a cold start (2 trip detection logic).
·

Throttle body with motor assembly

·

Mass air flow meter sub-assembly

·

PCV system

·

Air cleaner filter element sub-assembly

·

Intake system

·

VVT system

·

EGR valve assembly

·

Wire harness or connector

·

ECM


Comes on DTC stored SAE: P050A

MONITOR STRATEGY

Required Sensors/Components (Main) Throttle body with motor assembly
Required Sensors/Components (Related) Engine coolant temperature sensor
Mass air flow meter sub-assembly
Frequency of Operation Once per driving cycle

TYPICAL MALFUNCTION THRESHOLDS

Accumulated mass air flow Less than 80 g (varies with engine coolant temperature and engine coolant temperature at engine start)

CONFIRMATION DRIVING PATTERN

HINT:
·

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Start the engine and warm it up for 5 minutes or more.

7.

Stop the engine.

8.

Leave the vehicle outside overnight.

9.

Turn the ignition switch to ON [A].

10.

Turn the GTS on.

11.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

12.

Check that the value of the Data List item Coolant Temperature is between -10 and 50°C (14 and 122°F).

13.

Start the engine and warm it up until the engine coolant temperature is the same as the coolant temperature in the Freeze Frame Data.

14.

Idle the engine for 1 minute or more [B].

15.

Enter the following menus: Powertrain / Engine / Trouble Codes [C].

16.

Read the pending DTC.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



17.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

18.

Input the DTC: P050A00.

19.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions



HINT:
·

If the judgment result is NORMAL, the system is normal.

·

If the judgment result is ABNORMAL, the system is malfunctioning.

·

If the judgment result is INCOMPLETE, idle the engine for 3 minutes, let the engine cool down, and then perform steps [A] through [C] again.

·

Idle the engine for 3 minutes, let the engine cool down, and then perform steps [A] through [C]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

·

When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.




CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.


HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.


PROCEDURE

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050A00)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Trouble Codes.


e.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
DTC P050A00 is output A
DTC P050A00 and other DTCs are output B


HINT:

If any DTCs other than P050A00 are output, troubleshoot those DTCs first.




A

2.READ VALUE USING GTS (FUEL TRIM)

B

GO TO DTC CHART

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.READ VALUE USING GTS (FUEL TRIM)
HINT:

Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter sub-assembly.


a.

Connect the GTS to the DLC3.


b.

Start the engine.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Short FT B1S1 and Long FT B1S1.

Powertrain > Engine > Data List
Tester Display
Short FT B1S1
Long FT B1S1
50003 372 207,209

e.

Read the values displayed on the GTS at engine idle.


f.

Add the Short FT B1S1 and Long FT B1S1 values to obtain the total fuel trim.

Standard:
GTS Display Specified Condition
Total of Short FT B1S1 and Long FT B1S1 Between -20 and 20%



Result:
Proceed to
OK
NG



OK

3.INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

NG

7.CHECK PCV VALVE AND HOSE CONNECTIONS
3.INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)
a.

Check for foreign matter between the throttle valve and housing. If necessary, clean the throttle body with motor assembly. Also, check that the throttle valve moves smoothly.

OK:

Throttle valve is not contaminated with foreign matter and moves smoothly.



Result:
Proceed to
OK
NG



OK

4.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)

NG

6.REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY
4.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

HINT:

The A/C switch and all accessories should be off.



e.

Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Engine Speed, Intake Manifold Absolute Pressure and Coolant Temperature.

Powertrain > Engine > Active Test
Active Test Display
Control the EGR Step Position
Data List Display
Engine Speed
Intake Manifold Absolute Pressure
Coolant Temperature
50004 372 25 211,385,205

f.

Check the engine idling condition and Intake Manifold Absolute Pressure values in the Data List while performing the Active Test.

NOTICE:
·

Do not leave the EGR valve open for 10 seconds or more during the Active Test.

·

Be sure to return the EGR valve to step 0 when the Active Test is completed.

·

Do not open the EGR valve 30 steps or more during the Active Test.



OK:

The value of Intake Manifold Absolute Pressure and Engine Speed change in response to EGR step position.


Standard:
- Control the EGR Step Position (Active Test)
0 Steps 0 to 30 Steps
Idling condition Steady idling Idling changes from steady to rough idling or engine stalls
Intake Manifold Absolute Pressure
(Data List) 		Intake Manifold Absolute Pressure value is 18 to 38 kPa(abs) (2.6 to 5.5 psi(abs))
(EGR valve is fully closed) 		Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed


HINT:

During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve.



Result:
Proceed to
OK
NG



OK

14.CLEAR DTC

NG

5.INSPECT EGR VALVE ASSEMBLY
5.INSPECT EGR VALVE ASSEMBLY
a.

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>M20C-FKS (EMISSION CONTROL)>EGR VALVE>REMOVAL


b.

Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.



Result:
Proceed to
OK
NG



OK

14.CLEAR DTC

NG

17.REPLACE EGR VALVE ASSEMBLY
6.REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY
a.

Replace the throttle body with motor assembly.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>THROTTLE BODY>REMOVAL

HINT:

Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
7.CHECK PCV VALVE AND HOSE CONNECTIONS
A449578

a.

Check the PCV hose connections.


b.

Check the PCV valve.

Click hereEngine / Hybrid System>M20C-FKS (EMISSION CONTROL)>PCV VALVE>INSPECTION

OK:

PCV hose and PCV valve are connected correctly and are not damaged.



Result:
Proceed to
OK
NG



OK

8.CHECK INTAKE SYSTEM

NG

20.REPAIR OR REPLACE PCV VALVE OR HOSE
8.CHECK INTAKE SYSTEM
a.

Check the intake system for vacuum leaks.

Click hereEngine / Hybrid System>M20C-FKS (INTAKE / EXHAUST)>INTAKE SYSTEM>ON-VEHICLE INSPECTION

OK:

No leaks from intake system.



Result:
Proceed to
OK
NG



OK

9.CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

NG

19.REPAIR OR REPLACE INTAKE SYSTEM
9.CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
a.

Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.

OK:

The air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.



Result:
Proceed to
OK
NG



OK

10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)

NG

18.REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
10.PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

HINT:

The A/C switch and all accessories should be off.



e.

Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Engine Speed, Intake Manifold Absolute Pressure and Coolant Temperature.

Powertrain > Engine > Active Test
Active Test Display
Control the EGR Step Position
Data List Display
Engine Speed
Intake Manifold Absolute Pressure
Coolant Temperature
50004 372 25 211,385,205

f.

Check the engine idling condition and Intake Manifold Absolute Pressure values in the Data List while performing the Active Test.

NOTICE:
·

Do not leave the EGR valve open for 10 seconds or more during the Active Test.

·

Be sure to return the EGR valve to step 0 when the Active Test is completed.

·

Do not open the EGR valve 30 steps or more during the Active Test.



OK:

The value of Intake Manifold Absolute Pressure and Engine Speed change in response to EGR step position.


Standard:
- Control the EGR Step Position (Active Test)
0 Steps 0 to 30 Steps
Idling condition Steady idling Idling changes from steady to rough idling or engine stalls
Intake Manifold Absolute Pressure
(Data List) 		Intake Manifold Absolute Pressure value is 18 to 38 kPa(abs) (2.6 to 5.5 psi(abs))
(EGR valve is fully closed) 		Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed


HINT:

During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve.



Result:
Proceed to
OK
NG



OK

12.PERFORM ACTIVE TEST USING GTS (CHECK VVT SYSTEM)

NG

11.INSPECT EGR VALVE ASSEMBLY
11.INSPECT EGR VALVE ASSEMBLY
a.

Remove the EGR valve assembly.

Click hereEngine / Hybrid System>M20C-FKS (EMISSION CONTROL)>EGR VALVE>REMOVAL


b.

Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.



Result:
Proceed to
OK
NG



OK

12.PERFORM ACTIVE TEST USING GTS (CHECK VVT SYSTEM)

NG

17.REPLACE EGR VALVE ASSEMBLY
12.PERFORM ACTIVE TEST USING GTS (CHECK VVT SYSTEM)
a.

Operate the VVT system through the Active Test, and check if the VVT system is operating normally.

i.

Perform the Active Test, referring to DTC P001100 Procedure (VVT-iE system for intake camshaft).

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>P001100


ii.

Perform the Active Test, referring to DTC P001400 Procedure (VVT-i system for exhaust camshaft).

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>P001400



Result:
Proceed to
OK
NG



OK

13.READ VALUE USING GTS (MASS AIR FLOW SENSOR)

NG

16.CHECK AND REPAIR VVT SYSTEM
13.READ VALUE USING GTS (MASS AIR FLOW SENSOR)
a.

Connect the GTS to the DLC3.


b.

Start the engine.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Engine Speed
Mass Air Flow Sensor
Coolant Temperature
50003 372 211,215,205

e.

Allow the engine to idle until Coolant Temperature is 75°C (167°F) or higher.


f.

Read Mass Air Flow Sensor while maintaining an engine speed of 3000 rpm.

Standard:
GTS Display Condition Specified Condition
Mass Air Flow Sensor Engine warmed up
Shift position: P
A/C: Off
Engine Speed: 3000 rpm 		Between 8 and 13 gm/sec



Result:
Proceed to
OK
NG



OK

14.CLEAR DTC

NG

23.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)
14.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

15.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
15.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
NOTICE:

In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data).


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

e.

Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).


f.

Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data.


g.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


h.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

i.

Input the DTC: P050A00.


j.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P050A00 is output) 		B




A

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


B

23.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)
16.CHECK AND REPAIR VVT SYSTEM
a.

Check and repair the VVT system.

HINT:
·

Refer to DTC P001100 Inspection Procedure (VVT-iE system for intake camshaft).

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>P001100

·

Refer to DTC P001400 Inspection Procedure (VVT-i system for exhaust camshaft).

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>P001400




Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
17.REPLACE EGR VALVE ASSEMBLY
a.

Replace the EGR valve assembly.

Click hereEngine / Hybrid System>M20C-FKS (EMISSION CONTROL)>EGR VALVE>REMOVAL

HINT:

Perform "Inspection After Repair" after replacing the EGR valve assembly.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
18.REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
a.

Replace the air cleaner filter element sub-assembly.


Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
19.REPAIR OR REPLACE INTAKE SYSTEM
a.

Repair or replace the intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
20.REPAIR OR REPLACE PCV VALVE OR HOSE
a.

Repair or replace PCV valve or hose.


Result:
Proceed to
NEXT



NEXT

21.CLEAR DTC
21.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

22.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
22.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
NOTICE:

In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data).


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

e.

Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).


f.

Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data.


g.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


h.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

i.

Input the DTC: P050A00.


j.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P050A00 is output) 		B




A

END

B

23.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)
23.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION)
a.

Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>ELECTRONIC CIRCUIT INSPECTION PROCEDURE

HINT:

Repair any problems.



Result:
Proceed to
NEXT



NEXT

24.CLEAR DTC
24.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

25.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
25.CHECK WHETHER DTC OUTPUT RECURS (DTC P050A00)
NOTICE:

In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data).


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

e.

Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).


f.

Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data.


g.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


h.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

i.

Input the DTC: P050A00.


j.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P050A00 is output) 		B




A

END

B

26.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
26.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
a.

Disconnect the mass air flow meter sub-assembly connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C17-3 (VCC) - C71-137 (VCVG) Always Below 1 Ω
C17-1 (FG) - C71-135 (VG) Always Below 1 Ω
C17-2 (E2G) - C71-136 (E2G) Always Below 1 Ω
C17-3 (VCC) or C71-137 (VCVG) - Body ground and other terminals Always 10 kΩ or higher
C17-1 (FG) or C71-135 (VG) - Body ground and other terminals Always 10 kΩ or higher
C17-2 (E2G) or C71-136 (E2G) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

27.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

27.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY
a.

Replace the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>MASS AIR FLOW METER>REMOVAL

HINT:
·

If the result of the inspection performed in step 13 (READ VALUE USING GTS (MASS AIR FLOW SENSOR)) indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.

·

Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>INITIALIZATION




Result:
Proceed to
NEXT



NEXT

28.CLEAR DTC
28.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

e.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

29.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
29.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
NOTICE:

In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the Freeze Frame Data).


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

e.

Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).


f.

Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the Freeze Frame Data.


g.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


h.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

Powertrain > Engine > Utility
Tester Display
All Readiness
50005 372 20

i.

Input the DTC: P050A00.


j.

Check the DTC judgment result.

Result:
Result Proceed to
NORMAL
(DTCs are not output) 		A
ABNORMAL
(DTC P050A00 is output) 		B




A

END

B

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL