Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 262
EN(H4DOTC)(diag)-272
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
6
CHECK PURGE CONTROL SOLENOID
VALVE 2.
1) Remove the purge control solenoid valve 2.
2) Measure the resistance between purge con-
trol solenoid valve 2 terminals.
Terminals
No. 1 — No. 2:
Is the resistance 10 — 100 Ω? Repair the poor
contact of the
purge control sole-
noid valve 2 con-
nector.
Step
Check
Yes
No
EN(H4DOTC)(diag)-273
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
CS:DTC P04AD EVAP SYSTEM PURGE CONTROL VALVE "B" CIRCUIT HIGH
DTC DETECTING CONDITION:
• Detected when 2 consecutive driving cycles with fault occur.
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-179, DTC P04AD EVAP SYSTEM PURGE CONTROL
VALVE "B" CIRCUIT HIGH, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
Improper idling
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-63,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-49, PROCE-
WIRING DIAGRAM:
• Engine electrical system, without SI-DRIVE <Ref. to WI-32, WITHOUT SI-DRIVE, WIRING DIAGRAM,
• Engine electrical system, with SI-DRIVE <Ref. to WI-48, WITH SI-DRIVE, WIRING DIAGRAM, Engine
ECM
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
29 30 31
32 33
34 35
B135
B:
5
6
7
8
2
1
9
4
3
10
22 23
11 12 13 14 15
24 25
26
16 17
18 19 20 21
27
28 29
30 31
B137
D:
B21
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 26 27 28 29 30 31 32 33
34 35
42 43
36 37 38 39
48 49 50 51 52 53 54
40 41
44 45
46 47
E52
E4
1 2
B3
D15
D6
E2
B21
44
11
4
8
E4
2
1
E52
2
1
R68
2
1
B135
B:
R57
R15
10
11
R1
B97
R2
B98
7
10
R68
1 2
B220
13
14
15 16
17
27
24
25
26
20
21
22
23
29
30
31
28
32 35
33
34
37
38
39
36
40
8
9
10
11 12
1
2
5
3
4
7
6
19
18
R57
B97
1 2
3 4 5
6 7 8 9 10 11 12
EN-09251
B98
2 3 4 5
6 7 8 9
11 12 13 14
17 18 19 20
1
10
15 16
B220
24
23
22
21
B220
4
3
B137
D:
SBF-7
E
FUSE
(RELAY BLOCK)
MAIN RELAY
BATTERY
PRESSURE CONTROL
SOLENOID VALVE ASSY
PURGE CONTROL
SOLENOID VALVE 2
PURGE CONTROL
SOLENOID VALVE 1
EN(H4DOTC)(diag)-274
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND
PURGE CONTROL SOLENOID VALVE 2
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM and
purge control solenoid valve 2.
3) Turn the ignition switch to ON.
4) Measure the voltage between ECM connec-
tor and chassis ground.
Connector & terminal
(B137) No. 15 (+) — Chassis ground (–):
Is the voltage 10 V or more?
Repair the short
circuit to power in
harness between
ECM connector
and purge control
solenoid valve 2
connector.
2
CHECK PURGE CONTROL SOLENOID
VALVE 2.
1) Turn the ignition switch to OFF.
2) Measure the resistance between purge con-
trol solenoid valve 2 terminals.
Terminals
No. 1 — No. 2:
Is the resistance less than 1 Ω? Replace the purge
Repair the poor
contact of ECM
connector.
EN(H4DOTC)(diag)-275
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
CT:DTC P04DB CRANKCASE VENTILATION SYSTEM DISCONNECTED
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-180, DTC P04DB CRANKCASE VENTILATION SYS-
TEM DISCONNECTED, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
Improper idling
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-63,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-49, PROCE-
WIRING DIAGRAM:
• Engine electrical system, without SI-DRIVE <Ref. to WI-32, WITHOUT SI-DRIVE, WIRING DIAGRAM,
• Engine electrical system, with SI-DRIVE <Ref. to WI-48, WITH SI-DRIVE, WIRING DIAGRAM, Engine
ECM
:
E80
E87
E88
1 2
E80
1
2
E88
2
1
E87
2
1
B137
12
B21
E2
45
5
6
7
8
2
1
9
4
3
10
22 23
11 12 13 14 15
24 25
26
16 17
18 19 20 21
27
28 29
30 31
B137
B21
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 26 27 28 29 30 31 32 33
34 35
42 43
36 37 38 39
48 49 50 51 52 53 54
40 41
44 45
46 47
EN-09252
ES
SI
SI
ES
E
E
ES
: WITHOUT SI-DRIVE
: WITH SI-DRIVE
LEAK
DIAGNOSIS
CONNECTOR 2
LEAK
DIAGNOSIS
CONNECTOR 3
LEAK
DIAGNOSIS
CONNECTOR 1
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст