ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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">.
WIRING DIAGRAM:
Engine electrical system Engine Electrical System">
STEP | CHECK | YES | NO |
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">
1. OUTLINE OF DIAGNOSIS
NOTE:
For the detection standard, refer to DTC P1492. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1492 COIL 1 EGR "A" CONTROL CIRCUIT LOW">
Removal
REAR SUSPENSION > Rear Shock AbsorberREMOVAL1. CROSSTREK MODEL1. Disconnect the ground cable from battery. NOTE">2. Lift up the vehicle, and then remove the rear wheels.3. Remove the sensor assembly - headlight beam leveler. (Model with auto headlight beam leveler, left side only)CAUTION ...
If you have accidentally triggered the alarm system
To stop the alarm
Do any of the following operations
Press any button on the access key/
remote transmitter.
Turn the ignition switch to the "ON"
position (models without "keyless access
with push-button start system").
Turn the push-button ignition to the
"ACC" position (models wit ...
Driving with a trailer
You should allow for considerably more
stopping distance when towing a trailer.
Avoid sudden braking because it may
result in skidding or jackknifing and loss of
control.
Avoid abrupt starts and sudden accelerations.
If your vehicle has a manual
transmission, always start out in ...