Fuel Injector Circuit Check - Suzuki 2006 SX4 Service Manual

Step
10 Main relay check
1) Check main relay referring to "Engine and Emission
Control System Relay Inspection in Section 1C".
Is main relay in good condition?
11 Sensor 5 V power source circuit check
1) Connect connectors to ECM with ignition switch turned
OFF.
2) Turn ON ignition switch, measure each voltage between
"C01-14", "E01-56", "E01-53" and "C01-53", terminal of
ECM connector and vehicle body ground.
Is each voltage 4 – 6 V?
12 Sensor 5 V power source circuit check
1) Disconnect connectors from ECM, TP sensor, A/C
refrigerant pressure sensor and APP sensor with ignition
switch turned OFF.
2) Measure each resistance between, "C01-14", "E01-56",
"E01-53" and "C01-53" terminal of ECM connector and
vehicle body ground.
Is each resistance infinity?

Fuel Injector Circuit Check

Wiring Diagram
GRN
9
WHT
BLK/YEL
1
11
10
15 14 13 12 11
30 28 27 26
29
45 44 43 42 41
59
60 58 57 56
1. Fuse box No.2 3. ECM
2. Main relay 4. No.1 injector
Action
8
2
BLK/YEL
BLK/YEL
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
5. No.2 injector
6. No.3 injector
Engine General Information and Diagnosis:
"BRN/WHT" wire is
open or high resistance
circuit.
ECM power and ground
circuit is in good
condition.
Check internal short
circuit of TP sensor, A/C
refrigerant pressure
sensor and/or APP
sensor.
BLK/WHT
BRN/WHT
BLK/RED BLK/RED
BLK/RED BLK/RED
4
BLU/YEL
5
BLU/WHT
6
BLU/RED
7
BLU/ORN
2 1 15 14 13 12 11
17 16 30 28 27 26
29
32 31 45 44 43 42 41
59
47 46 60 58 57 56
7. No.4 injector
8. "IG COIL" fuse
Yes
Replace main relay.
Go to Step 12.
"GRY/RED", "RED" and/
or "BRN" wire is shorted
to ground circuit.
3
E01-29
C01-15 BLK
C01-30
BLK
C01-29
BLK
C01-48 BLK/ORN
E01-60
C01-58 BLK/ORN
12V 5V
E01-1
E01-16
C01-1
C01-2
C01-16
C01-17
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
9. Ignition switch
10. "FI" fuse
1A-151
No
S6RW0C1104088
2 1
17 16
32 31
47 46
I7RW01110036-01
11. "IGN" fuse