RM38N0EC _51 Engine / Hybrid System _111785 M20C-FKS, M20D-FKS ENGINE CONTROL _0504416 SFI SYSTEM C

M20C-FKS, M20D-FKS ENGINE CONTROL SFI SYSTEM P0A1412 Engine Mount "A" Control Circuit High Circuit Short to Battery

DESCRIPTION

1.25,2.75 1.5,2.75 1.5,2.75 2.583,3.167 true 2.083,4.083 2.333,4.083 2.333,4.083 2.833,3.5 true 5.333,3.5 5.083,3.5 5.083,3.5 4.917,2.917 true 1.063,2.667 1.375,2.865 0.313,0.198 10 false *1 1.927,4 2.24,4.198 0.313,0.198 10 false *2 5.385,3.427 5.698,3.625 0.313,0.198 10 false *3 0.094,0.146 0.438,0.375 0.344,0.229 10 false *A

*A	for 2WD models	-	-
*1	Vacuum Switching Valve (for Active Control Engine Mount System)	*2	Front Engine Mounting Insulator
*3	Rear Engine Mounting Insulator	-	-

1.25,2.75 1.5,2.75 1.5,2.75 2.583,3.167 true 2.083,4.083 2.333,4.083 2.333,4.083 2.833,3.5 true 1.063,2.667 1.375,2.865 0.313,0.198 10 false *1 1.927,4 2.24,4.198 0.313,0.198 10 false *2 0.094,0.146 0.438,0.375 0.344,0.229 10 false *A

*A	for AWD models	-	-
*1	Vacuum Switching Valve (for Active Control Engine Mount System)	*2	Front Engine Mounting Insulator

The active control engine mount system decreases engine vibration at a low engine speed using the vacuum switching valve (for active control engine mount system). The vacuum switching valve (for active control engine mount system) is controlled by a pulse signal transmitted to the vacuum switching valve (for active control engine mount system) from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
P0A1412	Engine Mount "A" Control Circuit High Circuit Short to Battery	Short in vacuum switching valve (for active control engine mount system) circuit and power supply circuit (2 trip detection logic).	· Short in vacuum switching valve (for active control engine mount system) circuit · Vacuum switching valve (for active control engine mount system) · ECM	Does not come on	SAE Code: P0A16

MONITOR DESCRIPTION

The ECM monitors the output voltage while the vacuum switching valve (for active control engine mount system) is operating.

The vacuum switching valve (for active control engine mount system) turns on and off according to ON/OFF switching of a transistor inside the ECM.

If a continuous mismatch occurs between the ECM transistor state and the output voltage, the ECM determines there is a malfunction in the vacuum switching valve (for active control engine mount system) circuit and stores a DTC.

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.

Turn the ignition switch to ON.

Turn the GTS on.

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

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

Turn the ignition switch to ON.

Turn the GTS on.

Enter the following menus: Powertrain / Engine / Active Test / Activate the ACM Inhibit.

In the Active Test, wait for at least 5 seconds with the vacuum switching valve (for active control engine mount system) at ON.

10.

In the Active Test, wait for at least 5 seconds with the vacuum switching valve (for active control engine mount system) at OFF.

11.

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

12.

Read the pending DTCs.

HINT:: ·

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

·

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

13.

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

14.

Input the DTC: P0A1412.

15.

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 has a malfunction.

WIRING DIAGRAM

1.656,1.896 2.719,2.094 1.063,0.198 10 false EFI-MAIN NO. 1 0.5,1.281 1.563,1.479 1.063,0.198 10 false EFI-MAIN NO. 1 2.729,1.26 3.385,1.438 0.656,0.177 10 false EFI NO. 2 1.75,0.979 1.917,1.188 0.167,0.208 10 false 3 2.417,0.979 2.583,1.188 0.167,0.208 10 false 5 1.76,1.49 1.927,1.698 0.167,0.208 10 false 1 2.417,1.49 2.583,1.698 0.167,0.208 10 false 2 3.729,1.021 3.896,1.229 0.167,0.208 10 false 1 4.979,1 5.146,1.208 0.167,0.208 10 false 2 3.438,1.396 3.75,1.594 0.313,0.198 10 false C50 3.438,1.563 5.583,2.229 2.146,0.667 10 false Vacuum Switching Valve (for Active Control Engine Mount System) 5.323,1.094 6.771,2.156 1.448,1.063 10 false C115 5.323,3 5.802,3.313 0.479,0.313 10 false A109 5.75,0.969 6.24,1.188 0.49,0.219 10 false ACM 5.75,2.875 6.208,3.063 0.458,0.188 10 false MREL 5.354,0.896 5.802,1.479 0.448,0.583 10 false 108 5.417,2.802 5.583,3.01 0.167,0.208 10 false 26 5.323,3.688 5.906,4 0.583,0.313 10 false A109 5.406,3.49 5.573,3.698 0.167,0.208 10 false 22 5.74,3.698 6.052,3.896 0.313,0.198 10 false E1 6.125,4.156 6.552,4.375 0.427,0.219 10 false ECM 0.677,3.76 1.542,3.948 0.865,0.188 10 false Battery 0.51,2.885 1.583,3.083 1.073,0.198 10 false FL MAIN 4.604,1 5.063,1.198 0.458,0.198 10 false ACM 3.875,1.01 4.333,1.208 0.458,0.198 10 false +B

CAUTION / NOTICE / HINT

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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.INSPECT VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>VACUUM SWITCHING VALVE (for Engine Mounting)>INSPECTION202111,999999,_51,_111785,_0503268,RM100000001ZE15,

Result:

Proceed to
OK
NG

2.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM)

REPLACE VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM)

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>VACUUM SWITCHING VALVE (for Engine Mounting)>REMOVAL202111,999999,_51,_111785,_0503268,RM100000001ZE14,

2.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACTIVE CONTROL ENGINE MOUNT SYSTEM) - ECM)

Disconnect the vacuum switching valve (for active control engine mount system) connector.

Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(C50,C115)Location & Routingewd_type=routing;type=c,c;code=C50,C115 Click Connector(C50)Engine Compartment>Engine Wire>Vacuum Switching Valve (for Active Control Engine Mount System)ewd_type=component;type=c;code=C50;pinno=2 Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=108
C50-2 (ACM) or C115-108 (ACM) - Other terminals	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(C50,C115)Location & Routingewd_type=routing;type=c,c;code=C50,C115

Click Connector(C50)Engine Compartment>Engine Wire>Vacuum Switching Valve (for Active Control Engine Mount System)ewd_type=component;type=c;code=C50;pinno=2

Click Connector(C115)Engine Compartment>Engine Wire>ECMewd_type=component;type=c;code=C115;pinno=108

C50-2 (ACM) or C115-108 (ACM) - Other terminals

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS, M20D-FKS (ENGINE CONTROL)>ECM>REMOVAL202303,202406,_51,_111785,_0503271,RM1000000029P3U,202406,999999,_51,_111785,_0503271,RM100000002MPY1,

REPAIR OR REPLACE HARNESS OR CONNECTOR