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OBD0323
AC: DTC P0403
—EXHAUST GAS RECIRCULATION CIRCUIT
MALFUNCTION (EGRSOL)—
OBD0324A
DESCRIPTION:
The EGR solenoid valve is situated between the BPT and
EGR valve. EGR solenoid valve is opened by a signal
emitted from the ECM. Therefore, throttle port pressure is
transmitted to diaphragm of EGR valve.
DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
Poor driving performance on low engine speed
1.Check transmission type.
AT
MT
Check AT/MT identification circuit.
2.Check output signal from ECM.
3.Check harness.
4.Check harness.
5.Check EGR solenoid valve.
6.Check power supply to EGR solenoid valve.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
235
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1442 of 2248
WIRING DIAGRAM:
LHD model
OBD0325
236
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1443 of 2248
WIRING DIAGRAM:
RHD model
B2M0454
1
CHECK TRANSMISSION TYPE.
Refer to flow chart on page 235.
OBD0326A
2
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure signal voltage between ECM and body.
: Connector & terminal
(B84) No. 60—Body / 10 V, or more
: Go to step 3.
: Go to step 4.
237
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11. Diagnostics Chart with Trouble Code
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OBD0326A
3
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from EGR solenoid valve.
3) Turn ignition switch to ON.
4) Measure voltage between ECM and body.
: Connector & terminal
(B84) No. 60—Body / 10 V, or more
: Repair short circuit of harness and replace ECM.
NOTE:
The harness between ECM and EGR solenoid valve is in
short circuit.
: Go to next step.
OBD0327
5) Turn ignition switch to OFF.
6) Measure resistance between EGR solenoid valve ter-
minals.
: Terminals
No. 1—No. 2/1Ω, or less
: Replace EGR solenoid valve and ECM.
: Go to next.
: Is there poor contact in ECM connector?
: Replace ECM.
: Repair poor contact in ECM connector.
OBD0678A
4
CHECK HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connectors from EGR solenoid valve and
ECM.
3) Measure resistance of harness connector between
EGR solenoid valve and body.
: Connector & terminal
(E18) No. 2—Body / 10Ω, or less
238
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
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: Repair short circuit of harness between ECM con-
nector and EGR solenoid valve connector.
: Go to the next step.
OBD0677A
4) Measure resistance of harness connector between
ECM and EGR solenoid valve.
: Connector & terminal
(B84) No. 60—(E18) No. 2 / 10Ω, or less
: Go to step 5.
: Repair open circuit of harness between ECM con-
nector and EGR solenoid valve connector.
OBD0327
5
CHECK EGR SOLENOID VALVE.
Measure resistance between connector terminals of EGR
solenoid valve.
: Terminals
No. 1—No. 2 / 10—100Ω
: Go to step 6.
: Replace EGR solenoid valve.
OBD0328A
6CHECK POWER SUPPLY TO EGR SOLENOID
VA LV E .
1) Turn ignition switch to ON.
2) Measure voltage between EGR solenoid valve harness
connector and body.
: Connector & terminal
(E18) No. 1—Body / 10 V, or more
: Confirm good connection at EGR solenoid valve
connector.
: Repair open circuit of harness between main relay
connector and EGR solenoid valve connector.
239
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11. Diagnostics Chart with Trouble Code
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OBD0329
AD: DTC P0420
—CATALYST SYSTEM EFFICIENCY BELOW
THRESHOLD (CAT)—
DESCRIPTION:
The three-way catalyst is an oval shaped honeycomb
monolith ceramic. Its porous surface is coated with plati-
num and rhodium.
The catalyst is used to reduce HC, CO and NOx in
exhaust gases, and permits simultaneous oxidation and
reduction.
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Engine stalls.
Idle mixture is out of specifications.
240
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11. Diagnostics Chart with Trouble Code
Page 1447 of 2248
1.Check any other DTC P0130, P0133, P0135,
P0136, P0139 and P0141 on display.
2.Check exhaust system.
3.Check rear catalytic converter.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
[T3D0] and [T3E0].>
WIRING DIAGRAM:
LHD model
B2M0626
241
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code
Page 1448 of 2248
WIRING DIAGRAM:
RHD model
B2M0455
242
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostics Chart with Trouble Code