2004 SUBARU FORESTER Service Repair Manual

Page 1329 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-231
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
6 CHECK EXHAUST SYSTEM.
Check exhaust system parts.
N
OTE:
Check the following items:
 Loose installation of p

Page 1330 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-232
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BV:DTC P1492 EGR VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT)
NOTE:
For the diagnostic procedure, refer to D

Page 1331 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-233
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CB:DTC P1498 EGR VALVE SIGNAL #4 CIRCUIT MALFUNCTION (LOW INPUT)
DTC DETECTING CONDITION:
Immediately at fault

Page 1332 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-234
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK POWER SUPPLY TO EGR VALVE.
1) Turn the ignition switch to OFF.
2) Disconnect the conn

Page 1333 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-235
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CC:DTC P1499 EGR VALVE SIGNAL #4 CIRCUIT MALFUNCTION (HIGH INPUT)
DTC DETECTING CONDITION:
Immediately at fault

Page 1334 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-236
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK ANY OTHER DTC ON DISPLAY.Is any other DTC displayed? Inspect the DTC 
using “List o

Page 1335 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-237
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CD:DTC P1510 ISC SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION 
(LOW INPUT)
NOTE:
For the diagnostic procedure,

Page 1336 of 2870

SUBARU FORESTER 2004  Service Repair Manual EN(H4SO)-238
ENGINE (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CJ:DTC P1516 ISC SOLENOID VALVE SIGNAL #4 CIRCUIT MALFUNCTION 
(LOW INPUT)
DTC DETECTING CONDITION:
Immediately