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DTC P0404 EGR VOLUME CONTROL VALVE
EC-1235
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
3. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK EGR VOLUME CONTROL VALVE
Refer to EC-1236, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace EGR volume control valve.
5. CHECK INTERMITTENT INCIDENT
Refer to EC-1058, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
ECM terminal EGR volume control valve terminal
25 1
26 6
27 3
28 4
Continuity should exist.
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