Subaru LEGACY 2006 Manual page 230

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BD:DTC P0400 EXHAUST GAS RECIRCULATION FLOW
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-114, DTC P0400 EXHAUST GAS RECIRCULATION
FLOW, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
• Movement performance problem when engine is low speed.
• Erroneous idling
• Movement performance problem
CAUTION:
After repairing or replacing the defective part, perform the Clear Memory Mode <Ref. to EN(H4SO)(di-
ag)-43, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-34, PRO-
CEDURE, Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
5
3
6
4
2
1
B47
EGR VALVE
E18
B134 ECM
SBF-7
B21
E2
E2
B21
EN(H4SO)(diag)-193
ENGINE (DIAGNOSTICS)
BATTERY
1 2 3 4
12 13 14 15
23 24 25 26 27 28 29 30 31 32 33
34 35 36
42 43
48 49 50
1 2
8 9 10 11 12 13 14 15
18 19 20 21
28 29 30 31
E
E18
1 2 3
4 5 6
B47
1 2
3 4
5 6
B21
5 6 7 8 9 10 11
16 17 18 19 20 21 22
37 38 39 40 41
44 45 46 47
51 52 53 54
B134
3 4 5 6 7
16 17
22 23 24 25 26 27
32 33 34
EN-04041