Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 545
VDC(diag)-79
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AG:DTC C0054 BLS ON MALFUNCTION
DTC DETECTING CONDITION:
Defective stop light switch
TROUBLE SYMPTOM:
• ABS does not operate.
• VDC does not operate.
WIRING DIAGRAM:
Vehicle Dynamics Control System <Ref. to WI-67, Vehicle Dynamics Control System.>
B225
B310
4 5 6 7 8 9
26 27 28 29 30
2 3
1
31 32 33 34 35 36
10 11
14 15 16 17 18 19
37 38 39 40
12 13
41 42 43 44 45 46
20 21
23 24
22
25
22
9
15
1 2
3 4
B225
21
5Dr
4Dr
7
4Dr
4Dr
6
7
9
4
7
6
2
1
5
3
8
B65
1 2
3 4
1 2 3 4 5
B65
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
1 2
3 4 5
6 7 8 9 10 11 12
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
B310
30
B65
B434
B159
R168
B99
R3
B99
R3
B435
*
1
*
2
5Dr
5Dr
*
1
*
2
B159
R168
B99
B434
B435
5Dr
4Dr
VDC00819
VDCCM & H/U
E
:
:
SBF-2
: 4 DOOR MODEL : 4
5 DOOR MODEL : 2
: 4 DOOR MODEL : 3
5 DOOR MODEL : 1
BATTERY
No. 8
MAIN SBF
STOP LIGHT &
BRAKE SWITCH
: 4 DOOR MODEL
: 5 DOOR MODEL
FUSE & RELAY BOX
(F/B)
FUSE
(RELA
Y BLOCK)
7.5A
VDC(diag)-80
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK STOP LIGHT SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the stop light switch connector.
3) Measure the resistance of stop light switch
terminals.
Connector & terminal
4 door model
(B65) No. 3 — No. 4:
5 door model
(B65) No. 1 — No. 2:
Is the resistance 1 MΩ or more
when switch is OFF (when
pedal is not depressed)?
Replace the stop
light switch. <Ref.
to BR-49, Stop
Light Switch.>
2
INTERVIEW CUSTOMERS.
Make sure that the operation was performed in
which accelerator pedal and brake pedal were
depressed simultaneously (with depressing
brake pedal with left foot).
Were the acceleration pedal
and brake pedal depressed
simultaneously?
System is normal.
(DTC may be
recorded while
brake is applied
during driving.)
3
CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
3) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
4) Read the DTC.
Is the same DTC displayed?
4
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Temporary poor
contact occurs.
VDC(diag)-81
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AH:DTC C0054 BLS OFF MALFUNCTION
DTC DETECTING CONDITION:
Defective stop light switch
TROUBLE SYMPTOM:
• ABS does not operate.
• VDC does not operate.
WIRING DIAGRAM:
Vehicle dynamics control system <Ref. to WI-67, Vehicle Dynamics Control System.>
B225
B310
4 5 6 7 8 9
26 27 28 29 30
2 3
1
31 32 33 34 35 36
10 11
14 15 16 17 18 19
37 38 39 40
12 13
41 42 43 44 45 46
20 21
23 24
22
25
22
9
15
1 2
3 4
B225
21
5Dr
4Dr
7
4Dr
4Dr
6
7
9
4
7
6
2
1
5
3
8
B65
1 2
3 4
1 2 3 4 5
B65
1 2 3 4
5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
1 2
3 4 5
6 7 8 9 10 11 12
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
B310
30
B65
B434
B159
R168
B99
R3
B99
R3
B435
*
1
*
2
5Dr
5Dr
*
1
*
2
B159
R168
B99
B434
B435
5Dr
4Dr
VDC00819
VDCCM & H/U
E
:
:
SBF-2
: 4 DOOR MODEL : 4
5 DOOR MODEL : 2
: 4 DOOR MODEL : 3
5 DOOR MODEL : 1
BATTERY
No. 8
MAIN SBF
STOP LIGHT &
BRAKE SWITCH
: 4 DOOR MODEL
: 5 DOOR MODEL
FUSE & RELAY BOX
(F/B)
FUSE
(RELA
Y BLOCK)
7.5A
VDC(diag)-82
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step
Check
Yes
No
1
CHECK STOP LIGHT SWITCH.
Check the stop light switch. <Ref. to BR-49,
INSTALLATION, Stop Light Switch.>
Is the installation position of the
stop light switch correct?
2
CHECK STOP LIGHT SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the stop light switch connector.
3) Measure the resistance of stop light switch
terminals.
Connector & terminal
4 door model
(B65) No. 3 — No. 4:
5 door model
(B65) No. 1 — No. 2:
Is the resistance 1 Ω or less
when the switch is ON (when
pedal is depressed)?
Replace the stop
light switch. <Ref.
to BR-49, Stop
Light Switch.>
3
CHECK STOP LIGHT POWER SUPPLY.
Measure the voltage between stop light switch
terminal and chassis ground.
Connector & terminal
4 door model
(B65) No. 3 (+) — Chassis ground (–):
5 door model
(B65) No. 1 (+) — Chassis ground (–):
Is the voltage 10 — 15 V?
Repair the stop
light power supply
circuit.
4
CHECK STOP LIGHT SWITCH HARNESS.
1) Disconnect the connector from the
VDCCM&H/U.
2) Measure the resistance between
VDCCM&H/U and stop light switch.
Connector & terminal
4 door model
(B65) No. 4 — (B310) No. 30:
5 door model
(B65) No. 2 — (B310) No. 30:
Is the resistance less than 1 Ω? Go to step
Repair the stop
light switch circuit.
5
CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact of connec-
tor between stop light switch
and VDCCM&H/U?
Repair the connec-
tor.
6
CHECK VDCCM&H/U.
1) Connect all connectors.
2) Clear the memory. <Ref. to VDC(diag)-27,
Clear Memory Mode.>
3) Perform the Inspection Mode. <Ref. to
VDC(diag)-26, Inspection Mode.>
4) Read the DTC.
Is the same DTC displayed?
7
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Temporary poor
contact occurs.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст