Dtc P1510: Ecm Back-Up Power Supply Malfunction - Suzuki Swift Sport 2004 Service & Repair Manual

DTC P1510: ECM Back-Up Power Supply Malfunction

Wiring Diagram
3
50A
80A
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
DTC detecting condition
Back-up power circuit voltage is less than 70% battery voltage for
5 seconds continuously 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.
WHT
E23
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. "RADIO" fuse
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
Battery voltage supply circuit
1
E23-2
C37
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
1A-143
S7RS0B1104060
2 1
17 16
32 31
47 46
I4RS0A110051-01