Honda Civic Service Manual page 535

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Exhaust Gas Recirculation System
The scan tool indicates Diagnostic Trouble
Recirculation (EGRlvalve lift sensor circuit.
(D16Y5 enginel
Code {DTC) P1498: A high voltage problem in the Exhaust Gas
EGR VALVE LlFf SENSOR 3P {M/T: 6Pl CONNECTOR (C1441
cvT:
vcc2
{YEL/BLUI
SG2 IGRN/BLK)
I
M/T:
sG2
{GRN/
BLKI
Wir€ side ol lemale terminals
ECM CONNECTOR D (16P)
vcc2
(YEL/BLUI
sG2
(GRN/BLK)
Wir€ side of female terminals
PCM CONNECTORS C 131P)'
Wire side oI female terminals
11-265
-
The MIL has been reportod on.
-
DTC P1498 is storod.
Probl€m verification:
1. Do the ECM/PCM Reset Proce
d u r e .
2. Stan the engine.
Intermittent tailure, sy3lem is OK
at lhis time. Check tor poor con'
nections or loose wire3 at C144
|EGR valvel and ECM/PCM.
ls DTC P1498 indicated?
C h e c k f o r a n o p e n i n t h o E G R
valv6 lift sen3or:
1. Turn the ignition switch OFF.
2. Disconnect the EGR valve lift
sensor 3P (M/T: 6Pl connector.
3. Turn the ignition switch ON (ll).
4. Measure voltage between the
EGR valve litt sensor 3P lM/T:
6P) connector terminals No. 3
a n d N o . 2 .
ls there approx.5 V?
Check lor op€n in th€ wire (SG2
line):
Measure voltage between ECM/
PCM connector terminals 010 and
D1l (C18 and C28)*.
Repair open in tho wiro betwoen
ECM/PCM lDl1 (Cl8)r) and EGR
valvo lift sensor.
ls there approx. 5 V?
Substitute . known-good ECM/
PCM and recheck. ll symptom/
indicrtion goes away, replaco
the original ECM/rcM.
*:'99 - 00 D16Y5 engine with CVT