Subaru Crosstrek Service Manual: Dtc p1498 coil 4 egr "a" control circuit low

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

• Improper idling

• Poor driving performance

• Engine breathing

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">, and Inspection Mode Inspection Mode > PROCEDURE">.

1.CHECK POWER SUPPLY TO EGR CONTROL VALVE.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from the EGR control valve.

3) Turn the ignition switch to ON.

4) Measure the voltage between EGR control valve connector and engine ground.

Connector & terminal

(E18) No. 2 (+) — Engine ground (−):

(E18) No. 5 (+) — Engine ground (−):

Is the voltage 10 V or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1498 COIL 4 EGR "A" CONTROL CIRCUIT LOW">Go to Step 2.

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit in harness between EGR control valve and main relay connector

• Poor contact of coupling connector

2.CHECK HARNESS BETWEEN ECM AND EGR CONTROL VALVE CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Measure the resistance between ECM connector and EGR control valve connector.

Connector & terminal

DTC P1492; (B136) No. 11 — (E18) No. 3:

DTC P1494; (B136) No. 13 — (E18) No. 1:

DTC P1496; (B136) No. 31 — (E18) No. 4:

DTC P1498; (B136) No. 32 — (E18) No. 6:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1498 COIL 4 EGR "A" CONTROL CIRCUIT LOW">Go to Step 3.

Repair the harness and connector.

NOTE:

In this case, repair the following item:

• Open circuit of harness between ECM connector and EGR control valve connector

• Poor contact of coupling connector

3.CHECK HARNESS BETWEEN ECM AND EGR CONTROL VALVE CONNECTOR.

1) Disconnect the connector from ECM.

2) Measure the resistance between ECM connector and chassis ground.

Connector & terminal

DTC P1492; (B136) No. 11 — Chassis ground:

DTC P1494; (B136) No. 13 — Chassis ground:

DTC P1496; (B136) No. 31 — Chassis ground:

DTC P1498; (B136) No. 32 — Chassis ground:

Is the resistance 1 M? or more?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1498 COIL 4 EGR "A" CONTROL CIRCUIT LOW">Go to Step 4.

Repair ground short circuit of harness between ECM connector and EGR control valve connector.

4.CHECK FOR POOR CONTACT.

Check for poor contact between ECM connector and EGR control valve connector.

Is there poor contact in ECM or EGR control valve connector?

Repair the poor contact of ECM or EGR control valve connector.

Replace EGR control valve. EGR Control Valve">

For the detection standard, refer to DTC P1492. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1492 COIL 1 EGR "A" CONTROL CIRCUIT LOW">

Dtc p1497 coil 3 egr "a" control circuit high

Dtc p1499 coil 4 egr "a" control circuit high

Other materials:

Driving on grades
Before going down a steep hill, slow down and shift into lower gear (if necessary, use 1st gear) in order to utilize the engine braking effect and prevent overheating of your vehicle's brakes. Do not make sudden downshifts. When driving uphill in hot weather, the air conditioner may ...

How to change the source
The USB Audio playback screen can be reached by the following methods: Connect a USB memory. Refer to "Connecting and disconnecting a USB memory/portable device" Select the "USB/iPod" key on the source select screen. Refer to "Selecting an audio source" Select play mode The play m ...

Disassembly
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Front Differential AssemblyDISASSEMBLY1. DIFFERENTIAL CASE ASSEMBLY1. Remove the taper roller bearing using the ST.ST1 498077000REMOVERST2 899864100REMOVERST3 398497701SEAT2. Remove the hypoid driven gear mounting bolt using the ST.ST 18270K ...