Subaru IMPREZA GD 2007 Series Manual page 1569

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BZ:DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(STI)-171, DTC P0503 VEHICLE SPEED SENSOR "A" INTER-
MITTENT/ERRATIC/HIGH, Diagnostic Trouble Code (DTC) Detecting Criteria.>
CAUTION:
After repairing or replacing the defective part, perform the Clear Memory Mode <Ref. to EN(STI)(di-
ag)-48, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(STI)(diag)-39, PROCE-
DURE, Inspection Mode.>.
WIRING DIAGRAM:
IGNITION SWITCH
1
4
B72
COMBINATION
METER
i11
2 25
i2 B37
SBF-4 SBF-1
No.18
VEHICLE SPEED
SENSOR
B17
B21
E100
B136 ECM
E
EN(STI)(diag)-238
BATTERY
1
7
17 18 19 20
28 29
1 2 3 4 5 6 7 8 9 10
E
B72
1 2
3 4
B17
1 2 3
B136
2 3 4 5 6
8 9 10 11 12 13 14 15 16
21 22 23 24 25 26 27
30 31 32 33 34 35
i11
B37
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15
16 17 18 19
20 21 22 23 24 25
EN-05485