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DTC P0478 DIFFERENTIAL EXHAUST PRESSURE SENSOR
EC-1267
[YD (WITH EURO-OBD)]
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EC
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-1267, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure BBS002KS
1. CHECK DIFFERENTIAL EXHAUST PRESSURE TUBE (UPSTREAM)
1. Remove differential exhaust pressure sensor tube (Upstream).
2. Check differential exhaust pressure tube (Upstream) for crack, clogging, improper connection or discon-
nection.
OK or NG
OK >> GO TO 2.
NG >> Repair differential exhaust pressure tube (Upstream).
2. CHECK DIFFERENTIAL EXHAUST PRESSURE SENSOR
Refer to EC-1268, "
Component Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Replace differential exhaust pressure sensor.
SEF817Y
: Vehicle front
1. Differentia exhaust pressure sensor 2. Differential exhaust pressure sen-
sor tube (downstream)
3. Differential exhaust pressure sen-
sor tube (upstream)
4. Differential exhaust pressure sen-
sor hose
PBIB3215E
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