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">
Washing
CAUTION
When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes,
drive the vehicle at a safe speed
while lightly depressing the
brake pedal to heat up the
brakes.
Do not wash the engine compartment
and area ad ...
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 ...
Installation
MANUAL TRANSMISSION AND DIFFERENTIAL(5MT) > Shifter Fork and RodINSTALLATION1. Install the check ball spring and check ball to the reverse fork rod arm, and press in the ST.ST 399411700ACCENT BALL INSTALLER2. Install the reverse fork rod through the hole on the rear of the transmission case. P ...