Subaru IMPREZA GD 2007 Series Manual page 349

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
CI: DTC P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW (AT MODEL)
DTC DETECTING CONDITION:
• Detected when two consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4SO)-179, DTC P0851 PARK/NEUTRAL SWITCH INPUT CIR-
CUIT LOW (AT MODEL), Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
Erroneous idling
CAUTION:
After repairing or replacing the defective parts, perform the Clear Memory Mode <Ref. to
EN(H4SO)(diag)-47, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(di-
ag)-38, PROCEDURE, Inspection Mode.>.
WIRING DIAGRAM:
B136 ECM
MT
B122
B25 T2 T2 B25
2 1
NEUTRAL
POSITION SWITCH
INHIBITOR SWITCH
P R N
12 12
11 7
B12 T3 T7
STARTER MOTOR
B14
EN(H4SO)(diag)-240
7
17 18 19 20
28 29
2
6
D 3 2 1
M
B136
1 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
B25
1 2
B12
1 2 3 4
5 6 7 8
9 10 11 12
T7
1 2 3 4 5 6
7 8 9 10 11 12
B122
1 2 3 4
5 6 7 8
EN-05397