Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: 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 HIGH

NOTE:

For the diagnostic procedure, refer to DTC P1499. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1499 COIL 4 EGR "A" CONTROL CIRCUIT HIGH">

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

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria

Threshold Value

EGR control current

≥ 6 A

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

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