Dtc P0403: Exhaust Gas Recirculation Control Circuit - Suzuki SX4 Service Manual

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1A-122 Engine General Information and Diagnosis:

DTC P0403: Exhaust Gas Recirculation Control Circuit

Wiring Diagram
GRN
4
6
WHT
BLK/YEL
8
7
3
15
14
13
12
11
30
29
28
27
26
45
44
43
42
41
60
59
58
57
56
1. Main relay
2. EGR valve
DTC Detecting Condition and Trouble Area
EGR valve output voltage is different from output command with more than one pole
out of 4 poles.
(1 driving cycle detection logic)
DTC Confirmation Procedure
WARNING
!
• When performing a road test, select a place where there is no traffic or possibility of a traffic
accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester, on a level road.
1) With ignition switch turned OFF, connect scan tool to DLC.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm it up to normal operating temperature.
4) Drive vehicle in 2000 – 3500 rpm of engine speed.
5) Keep above vehicle speed for 1 min. (Throttle valve opening is kept constant in this step.)
6) Stop vehicle and check DTC and pending DTC.
1
BLK/YEL
BLK/YEL
BLK/RED
2
BLK/RED
BLK/RED
E01
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
3. Main fuse box
4. Ignition switch
DTC detecting condition
BLK/WHT
BRN/WHT
BLK/RED
BLK/RED
BLK/RED
GRN/RED
GRN/ORN
WHT/RED
BRN/YEL
2
1
15
14
13
12
11
17
16
30
29
28
27
26
32 31
45
44
43
42
41
47 46
60
59
58
57
56
5. ECM
6. "IG COIL" fuse
5
E01-29
C01-58
BLK/ORN
C01-15
BLK
C01-30
BLK
E01-60
E01-31
BLK
12V
5V
E01-1
E01-16
C01-4
C01-3
C01-19
C01-18
C01
10
9
8
7
6
5
4
3
25
24
23
22
21
20
19
18
40
39 38
37
36
35
34
33
55
54 53
52
51
50
49
48
7. "FI" fuse
8. "IGN" fuse
Trouble area
• EGR valve circuit open
• EGR valve
• ECM
S7RW0A1104046
2
1
17
16
32 31
47 46
I6RW0D110037-01

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