Suzuki SWIFT RS415 2017, Service Manual

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1A-54 Engine General Information and Diagnosis:
DTC P0102: Mass Air Flow Circuit Low Input
S4RS0A1104017
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC and pending DTC.
E23 C37
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38 44 45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38 44 45 43 41 33
1 12 13
23
8
BLK/WHT
BLK/RED BLK/RED
WHT
80A
BLK/YEL BLK/YEL
BLK/YEL
GRN
BRN/WHT
12V 5V
5V
5V
2
3
4
E23-29
E23-1
E23-60
C37-58
C37-15
C37-30
BLK/ORN
BLK
BLK
BLK/RED
E23-16
BLK/YEL
GRY
ORN
1
BLK/RED
GRN/BLK C37-26
C37-27
C37-25
C37-55 5
I4RS0A110019-
1. MAF and IAT sensor 4. ECM
2. Ignition switch 5. To other sensors
3. Main relay
DTC detecting condition Trouble area
DTC will be set when all of following conditions are
detected for 0.5 seconds continuously.
• Engine is running
• Voltage of MAF sensor output is less than specified
value for specified time continuously.
(1 driving cycle detection logic)
• Open or short in MAF sensor circuit
• MAF sensor
• ECM