Dtc P1510: Ecm Back-Up Power Supply Malfunction - Suzuki SX4 Service Manual

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DTC P1510: ECM Back-Up Power Supply Malfunction

Wiring Diagram
3
80A
50A
15
14
13
12
11
30
29
28
27
26
44
45
43
42
41
60
59
58
57
56
1. ECM
Circuit Description
Battery voltage is supplied so that DTC memory, values for engine control learned by ECM, etc. are kept in ECM even
when the ignition switch is turned OFF.
DTC Detecting Condition and Trouble Area
Back-up power circuit voltage is less than specified value for 5 seconds while engine
is running.
(1 driving cycle detection logic)
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool and run engine at idle speed for 1 min.
3) Check DTC and pending DTC.
DTC Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions for DTC Troubleshooting".
Step
1
Was "Engine and Emission Control System Check"
performed?
WHT
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
2. "DOME" fuse
DTC detecting condition
Action
Engine General Information and Diagnosis:
WHT/RED
2
2
1
15
14
13
12
11
17
16
30
29
28
27
26
44
32 31
45
43
42
41
47 46
60
59
58
57
56
Go to Step 2.
1
E01-2
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
3. Main fuse box
Trouble area
Battery voltage supply circuit
Yes
Go to "Engine and
Emission Control
System Check".
1A-143
S7RW0A1104058
2
1
17
16
32 31
47 46
I6RW0D110046-02
No

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