Subaru Legacy (2005 year). Service manual — part 231
EN(H4SO 2.5)(diag)-209
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ACTUATOR
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from tumble gen-
erator valve connector.
3) Measure the voltage between tumble gen-
erator valve actuator and chassis ground.
Connector & terminal
(E55) No. 1 (+) — Chassis ground (
−
):
(E55) No. 2 (+) — Chassis ground (
−
):
Is the voltage less than 5 V?
Replace the tum-
ble generator valve
actuator. <Ref. to
FU(H4SO 2.5)-29,
Tumble Generator
Valve Actuator.>
Repair the battery
short circuit
between ECM and
tumble generator
valve actuator.
EN(H4SO 2.5)(diag)-210
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BV:DTC P2011 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN
(BANK 2)
DTC DETECTING CONDITION:
Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.
WIRING DIAGRAM:
EN-02469
E51
E2
E51
B21
B134 ECM
28
TUMBLE
GENERATOR VALVE
ACTUATOR LH
29
33
22
1
2
B134
5
6
7
8
2
1
9
4
3
10
24
22 23
25
11 12 13 14 15
26 27
28
16 17
18 19 20 21
33 34
29
32
30 31
B21
1 2 3 4
12 13 14 15
5 6 7 8
16 17 18 19
9 10 11
20 21 22
23 24 25 26 27 28 29 30 31 32 33
35
34
37
36
39
38
41
40
43
42
44
45
47
46
49
48
51
50
53
52
54
1 2
EN(H4SO 2.5)(diag)-211
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ACTUATOR
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from tumble gen-
erator valve and ECM connector.
3) Measure the resistance between tumble
generator valve actuator and ECM connector.
Connector & terminal
(E51) No. 1 — (B134) No. 29:
(E51) No. 2 — (B134) No. 28:
Is the resistance less than 1
Ω?
Repair the open
circuit between
ECM and tumble
generator valve
connector.
NOTE:
In this case, repair
the following:
• Open circuit of
harness between
ECM and tumble
generator valve
actuator connector
• Poor contact in
coupling connector
2
CHECK POOR CONTACT.
Check poor contact in tumble generator valve
actuator connector.
Is there poor contact in tumble
generator valve actuator con-
nector?
Repair the poor
contact in tumble
generator valve
actuator connec-
tor.
Replace the tum-
ble generator valve
actuator. <Ref. to
FU(H4SO 2.5)-29,
Tumble Generator
Valve Actuator.>
EN(H4SO 2.5)(diag)-212
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
BW:DTC P2012 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT LOW (BANK
2)
DTC DETECTING CONDITION:
Immediately at fault recognition
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
40, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-33, Inspection Mode.>.
WIRING DIAGRAM:
EN-02469
E51
E2
E51
B21
B134 ECM
28
TUMBLE
GENERATOR VALVE
ACTUATOR LH
29
33
22
1
2
B134
5
6
7
8
2
1
9
4
3
10
24
22 23
25
11 12 13 14 15
26 27
28
16 17
18 19 20 21
33 34
29
32
30 31
B21
1 2 3 4
12 13 14 15
5 6 7 8
16 17 18 19
9 10 11
20 21 22
23 24 25 26 27 28 29 30 31 32 33
35
34
37
36
39
38
41
40
43
42
44
45
47
46
49
48
51
50
53
52
54
1 2
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