M20D-FKS ENGINE CONTROL SFI SYSTEM P0A1414 Engine Mount "A" Control Circuit Low Circuit Short to Ground or Open
DESCRIPTION
Refer to DTC P0A1412.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P0A1414 | Engine Mount "A" Control Circuit Low Circuit Short to Ground or Open | Open or short in vacuum switching valve (for active control engine mount system) circuit and power supply circuit
(2 trip detection logic). |
·
Open or short in vacuum switching valve (for active control engine mount system) circuit ·
Vacuum switching valve (for active control engine mount system) ·
ECM |
- | DTC stored | SAE: P0A15 |
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.
MONITOR STRATEGY
| Frequency of Operation | Continuous |
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.
In the Active Test, wait for at least 5 seconds with the vacuum switching valve (for active control engine mount system) at OFF.
Enter the following menus: Powertrain / Engine / Trouble Codes.
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.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P0A1414.
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
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 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
| *a | Front view of wire harness connector
(to Vacuum Switching Valve (for Active Control Engine Mount System)) |
Disconnect the vacuum switching valve (for active control engine mount system) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition C7-1 - Body ground Ignition switch ON 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
Inspect the vacuum switching valve (for active control engine mount system).
- Result:
Proceed to OK NG
OK
NG
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 C7-2 - C71-108 (ACM) Always Below 1 Ω C7-2 or C71-108 (ACM) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG