Fuel Pump And Its Circuit Check - Suzuki Grand Vitara 2011 Manual

1A-249 Engine General Information and Diagnosis: For Petrol Engine Model
Step
7 Fuel injector drive signal check
1) Connect connectors to each fuel injector and ECM with
ignition switch turned OFF.
2) Turn ON ignition switch.
3) Measure voltage between each "C37-1", "C37-2", "C37-
16", "C37-17" terminal of ECM connector and vehicle
body ground.
Is voltage 10 – 14 V?

Fuel Pump and Its Circuit Check

Wiring Diagram
BLK/YEL
7
WHT/GRN
BLK/RED
1
9
8
15 14 13 12 11
30 29 28 27 26
44
45 43 42 41
60 59 58 57 56
1. Fuse box No.2
2. Main relay
3. ECM
Action
BLK/WHT
BLK/WHT
4
6
BLU/BLK
2
BLU/BLK
BLK/RED
BLK/RED
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
4. Fuel pump relay
5. Fuel pump
6. "IG COIL" fuse
Check fuel injector
referring to "Fuel
Injector Inspection: For
Petrol Engine Model in
Section 1G".
If check result is
satisfactory, substitute a
known-good ECM and
recheck.
BLK/WHT
WHT/GRN
PNK
5
BLK
BLU/BLK
BLU/BLK
BLU
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
Yes
"PNK", "PNK/BLK",
"PNK/GRN" and/or
"PNK/BLU" wire(s) are
open circuit.
3
E23-29
E23-15
C37-15 BLK/ORN
C37-30 BLK/ORN
C37-29
BLK/YEL
C37-48
BLK/YEL
BLK/YEL
C37-58
E23-1
E23-16
E23-60
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
7. Ignition switch
8. "FI" fuse
9. "IGN" fuse
No
S6JB0A1114083
2 1
17 16
32 31
47 46
I5JB0A110102-01