Subaru Crosstrek Service Manual: Dtc p1492 coil 1 egr "a" control circuit low
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P1492 COIL 1 EGR "A" CONTROL CIRCUIT LOW
NOTE:
For the diagnostic procedure, refer to DTC P1498. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1498 COIL 4 EGR "A" CONTROL CIRCUIT LOW">
1. OUTLINE OF DIAGNOSIS
• Detects open or short circuit of EGR.
• Judge as NG when the ECM output level differs from the actual terminal level.
2. COMPONENT DESCRIPTION
(1) | Engine control module (ECM) | (4) | Switch circuit | (6) | Main relay |
(2) | Computer unit (CPU) | (5) | Battery voltage | (7) | EGR control valve |
(3) | Detecting circuit |
3. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 10.9 V |
EGR control signal | OFF |
4. GENERAL DRIVING CYCLE
Perform diagnosis continuously during EGR operation.
5. DIAGNOSTIC METHOD
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Malfunction Criteria | Threshold Value |
EGR control voltage | ≤ Battery voltage ? 0.34 V |
Time Needed for Diagnosis: 2500 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Dtc p1451 evap system clog detected (pipe)
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P1451 EVAP SYSTEM CLOG DETECTED (PIPE)DTC DETECTING CONDITION:Detected when two consecutive driving cycles wi ...
Dtc p1493 coil 1 egr "a" control circuit high
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P1493 COIL 1 EGR "A" CONTROL CIRCUIT HIGHNOTE:For the diagnostic procedure, refer to DTC P1499. Di ...
Other materials:
Inspection
WIPER AND WASHER SYSTEMS > Front Wiper Motor and LinkINSPECTION1. Check that the following operations perform normally.CAUTION:Fix the motor to prevent the motor from being shorted by moving during operation.(1) When the battery is connected to the terminal of connectors, confirm that the motor o ...
Subaru select monitor Operation
ENGINE (DIAGNOSTICS)(H4DO) > Subaru Select MonitorOPERATION1. HOW TO USE SUBARU SELECT MONITORNOTE:For detailed operation procedures, refer to “Application help”.2. DISPLAY ENGINE CURRENT DATANOTE:• For detailed operation procedures, refer to “Application help”.&bull ...
Inspection
LUBRICATION(H4DO) > Oil Pressure SystemINSPECTIONSTEPCHECKYESNO1.CHECK ENGINE OIL AMOUNT.Is the engine oil amount normal? Engine Oil > INSPECTION"> Oil Pressure System > INSPECTION">Go to Step 2.Adjust the engine oil amount. Engine Oil > INSPECTION"> After the o ...
