Subaru Legacy 2004 Service Manual page 1363

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
G: DTC P0107 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE
CIRCUIT LOW INPUT
DTC DETECTING CONDITION:
Detect as soon as the malfunction occurs.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
30, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)(diag)-28, PROCE-
DURE, Inspection Mode.>.
WIRING DIAGRAM:
*
: TERMINAL NO. RANDOM ARRANGEMENT
E21
1 2 3 1 2 3 4
5 6 7 8
Step
1 CHECK INPUT SIGNAL FROM ECM.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(B136) No. 16 (+) — Chassis ground (
MANIFOLD ABSOLUTE
PRESSURE SENSOR
B83
B21
1 2 3 4 5 6 7 8
12 13 14 15 16 17 18 19
23 24 25 26 27 28 29 30 31 32 33
34 35 36 37
42 43 44 45
48 49 50 51
"
EN(H4DOTC)(diag)-74
E21
E2
B21
*
*
B83
B136 ECM
1
9 10 11
7 8
20 21 22
17 18 19 20 21
28 29 30
38 39 40 41
46 47
52 53 54
Check
Is the voltage more than 4.5 V? Go to step 3.
):
B136
2 3 4 5 6
9 10 11 12 13 14 15 16
22 23 24 25 26 27
31 32 33 34 35
Yes
EN-01949
No
Go to step 2.