2006 SUZUKI SX4 fuel pump

Downloaded from www.Manualslib.com manuals search engine 1A-178 Engine General Information and Diagnosis:
E01-4 BRNEngine revolution
signal output for P/
S control module0 – 0.8 VIgnition switch turned ON
with engine at stop.—
*0 – 1 V
↑↓
8 – 14 V
(“Reference
waveform No.24: ”
and “Reference
waveform No.25: ”)While engine running.Output signal is pulse.
Pulse frequency varies
depending on engine
speed.
(2 pulses are generated
per 1 crankshaft
revolution.)
(3000 r/min. = 100 Hz)
E01-5 — — — — —
E01-6 — — — — —
E01-7 — — — — —
E01-8 — — — — —
E01-9 — — — — —
E01-10 — — — — —
E01-11 — — — — —
E01-12 — — — — —
E01-13YEL/
REDClock signal for
immobilizer coil
antenna10 – 14 V Ignition switch turned ON. —
E01-14 — — — — —
E01-15GRN/
WHTFuel pump relay
output0 – 2.5 VFor 2 sec. from the time
ignition switch is turned
ON or while engine is
running.
—
10 – 14 VOn and after 2 sec. from
the time ignition switch is
turned ON or while engine
is at stop.
E01-16BLK/
REDMain power supply 10 – 14 V Ignition switch turned ON. —
E01-17 — — — — —
E01-18 WHTCAN (low)
communication line
(active low signal)
to ABS control
module*0.5 – 2.5 V
(“Reference
waveform No.23: ”)Ignition switch turned ON
with engine at stop.CAN communication line
signal is pulse. Pulse
signal displayed with a
regular frequency which
varies depending on
engine condition.
E01-19 BLU/
WHTElectric load signal
for heater blower
motor10 – 14 VIG switch: ON Blower
selector < 3rd position
(Manual A/C model)
— IG switch: ON Blower
selector < 2nd position
(Auto A/C model)
0 – 1 VIG switch: ON Blower
selector > 2nd position
E01-20GRN/
WHTBrake light switch
signal0 – 1 VIgnition switch turned ON,
stop lamp not lit up.
—
10 – 14 VIgnition switch turned ON,
stop lamp lit up.
E01-21 — — — — —
E01-22 — — — — —
E01-23 — — — — —
E01-24YEL/
REDFuel level sensor
signal0 – 6 VIgnition switch turned ON.
Voltage varies depends on
fuel level.—
E01-25 — — — — — Terminal
No.Wire
colorCircuit Normal voltage Condition Remarks

Downloaded from www.Manualslib.com manuals search engine 1A-192 Engine General Information and Diagnosis:
Resistance Check
1) Remove ECM from its bracket referring to “Engine Control Module (ECM) Removal and Installation in Section 1C”.
CAUTION!
Never touch terminals of ECM itself or connect voltmeter or ohmmeter (2).

2) Connect special tool to ECM connectors (1) securely.
NOTE
Do not connect the other connector of special tool to ECM.

Special tool
(A): 09933–06320
3) Check resistance between each pair of terminals of special tool connectors (1) as listed in the following table.
CAUTION!
• Be sure to connect ohmmeter probe from wire harness side of coupler.
• Be sure to turn OFF ignition switch for this check.
• Resistance in the following table represents that measured when parts temperature is 20 °C (68 °F).

1
(A)
2
3
I7RW01110032-02
Terminals Circuit Standard resistance Condition
C01-47 to E01-29 Heater of HO2S-2 4 – 15 Ω—
E01-46 to E01-1/16 Radiator cooling fan relay No.1 160 – 240 Ω—
E01-60 to E01-29 Main relay 160 – 240 ΩBattery disconnected and
ignition switch turned ON
E01-15 to E01-29 Fuel pump relay 160 – 240 Ω—
C01-16 to E01-1/16No.3 fuel injector
10.8 – 18.2 Ω—
C01-17 to E01-1/16No.4 fuel injector
C01-4 to E01-1/16EGR valve (stepping motor No.1 coil) (if
equipped)20 – 31 Ω—
C01-29 to E01-1/16 EVAP canister purge valve 28 – 35 Ω—
C01-2 to E01-1/16 No.2 fuel injector 10.8 – 18.2 Ω—
C01-3 to E01-1/16EGR valve (stepping motor No.2 coil) (if
equipped)
20 – 31 Ω— C01-18 to E01-1/16EGR valve (stepping motor No.4 coil) (if
equipped)
C01-19 to E01-1/16EGR valve (stepping motor No.3 coil) (if
equipped)
C01-46 to E01-29 Heater of HO2S-1 2 – 11 Ω—
C01-1 to E01-1/16 No.1 fuel injector 10.8 – 18.2 Ω—
E01-29 to E01-47 A/C compressor relay (if equipped with A/C) 160 – 240 Ω—
E01-58 to E01-1/16A/C condenser cooling fan relay
(if equipped with A/C)160 – 240 Ω—
C01-60 to C01-59 Oil control valve (for engine with VVT system) 6 – 15 Ω—
E01-45 to E01-1/16 Throttle actuator control relay 160 – 240 Ω—

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-195
6ECM ground circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from ECM.
3) Measure resistance between each “E01-31”, “C01-58”,
“C01-15” and “C01-30” terminals of ECM connector and
body ground.
Is resistance 1
Ω or less?Substitute a known-
good ECM and recheck.“BLK/ORN” or “BLK”
wire is open or high
resistance circuit.
7Main relay circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Using service wire, ground “E01-60” terminal of ECM
connector and measure voltage between each “E01-1”
and “E01-16” terminals of ECM connector and body
ground.
Is voltage 10 – 14 V?Go to Step 11. Go to Step 8.
8Main relay circuit check
1) Remove main relay (1) from individual circuit fuse box
No.1.
2) Check for proper connection to main relay connector at
“BLK/YEL” and “BLK/RED” wire terminals.
3) If OK, measure resistance between each “E01-1” and
“E01-16” wire terminals of ECM connector and “BLK/
RED” wire terminal of main relay connector.
Is resistance 1
Ω or less?Go to Step 9. “BLK/RED” wire is open
circuit or high resistance
circuit.
9Main relay circuit check
1) Remove main relay from individual circuit fuse box No.1
with ignition switch turned OFF.
2) Measure voltage between “BLK/YEL” wire terminal of
main relay connector and body ground.
Is voltage 10 – 14 V?Go to Step 10. “BLK/YEL” wire is open
circuit.
10Main relay check
1) Check main relay referring to “Main Relay, Fuel Pump
Relay, Starting Motor Control Relay, Throttle Actuator
Control Relay and Radiator Cooling Fan Relay
Inspection in Section 1C”.
Is main relay in good condition?“BRN/WHT” wire is
open or high resistance
circuit.Replace main relay. Step Action Yes No
1
I5RW0A110059-02

Downloaded from www.Manualslib.com manuals search engine 1A-198 Engine General Information and Diagnosis:
Fuel Pump and Its Circuit CheckS6RW0D1104075
Wiring Diagram
E01-1
E01-15
BLK/REDBLK/YEL
BLK/YEL
BLK/RED
E01-29BLK/WHT
GRN/WHT
BLK/WHT
BLK/WHT
PNK
BLK
WHT
GRN
C01-58
C01-15
C01-30
BLK/ORN
BLK
BLK
7
8 9643
25
E01C01
3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238 3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238
BLK/YEL
1
BLK
E01-16BLK/RED
BLK/RED
E01-31
BRN/WHTE01-60
I6RW0D110054-01
1. Main fuse box 4. Fuel pump relay 7. Ignition switch
2. Main relay 5. Fuel pump 8. “FI” fuse
3. ECM 6. “IG COIL” fuse 9. “IGN” fuse

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-199
Troubleshooting
NOTE
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits”.

Step Action Yes No
1Fuel pump control system check for operation
Is fuel pump heard to operate 2 sec. after ignition switch is
turned ON?Fuel pump circuit is in
good condition.Go to Step 2.
2Fuel pump relay power supply check
1) Disconnect fuel pump relay from individual circuit fuse
box No.1 with ignition switch turned OFF.
2) Check for proper connection to fuel pump relay at each
terminal.
3) If OK, turn ON ignition switch, measure voltage between
“BLK/WHT” wire terminal of fuel pump relay connector
and engine ground.
Is voltage 10 – 14 V?Go to Step 3. “BLK/WHT” wire is open
or shorted to ground
circuit.
3Fuel pump relay power supply check
1) Turn ON ignition switch, measure voltage between “BLK/
RED” wire terminal of fuel pump relay connector and
engine ground.
Is voltage 10 – 14 V?Go to Step 4. “BLK/RED” wire is open
circuit.
4Fuel pump relay check
1) Check fuel pump relay referring to “Main Relay, Fuel
Pump Relay, Starting Motor Control Relay, Throttle
Actuator Control Relay and Radiator Cooling Fan Relay
Inspection in Section 1C”.
Is relay in good condition?Go to Step 5. Faulty relay.
5Fuel pump relay drive signal check
1) Connect fuel pump relay to individual circuit fuse box
No.1.
2) Connect voltmeter between “E01-15” terminal of ECM
connector and vehicle body ground.
3) Measure voltage 2 second after ignition switch is turned
ON.
Is voltage 10 – 14 V?Go to Step 6. “GRN/WHT” wire is
open circuit or shorted
to ground circuit.
I2RH01110132-01

Downloaded from www.Manualslib.com manuals search engine 1A-200 Engine General Information and Diagnosis:
6Fuel pump relay drive signal check
1) Measure voltage within 2 second after ignition switch is
turned ON.
Is voltage 0 – 1 V?Go to Step 7. Substitute a known-
good ECM and recheck.
7Wire circuit check
1) Turn OFF ignition switch.
2) Detach fuel tank referring to “Fuel Tank Removal and
Installation in Section 1G”.
3) Disconnect connector from fuel pump.
4) Measure resistance between “PNK” wire terminal of fuel
pump connector and vehicle body ground.
Is resistance infinity?Go to Step 8. “PNK” wire is shorted to
ground.
8Fuel pump circuit check
1) Connect service wire between “E01-15” terminal of ECM
connector and vehicle body ground.
2) Turn ON ignition switch, measure voltage between
“PNK” terminal at fuel pump connector and vehicle body
ground.
Is voltage 10 – 14 V?Go to Step 9. “PNK” wire is open
circuit.
9Fuel pump circuit check
1) Turn OFF ignition switch.
2) Measure resistance between “BLK” wire terminal at fuel
pump connector and vehicle body ground.
Is resistance less than 5
Ω?Faulty fuel pump. “BLK” wire is open
circuit. Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-201
Fuel Pressure CheckS6RW0D1104076
System Diagram
Special tool
(A): 09912–58442
(B): 09912–58432
(C): 09912–58490
Troubleshooting
NOTE
Before using following flow, check to make sure that battery voltage is higher than 11 V. If battery
voltage is low, pressure becomes lower than specification even if fuel pump and line are in good
condition.

I3RM0A110081-01
1. Injector 2. Delivery pipe 3. Fuel filter and fuel pump
Step Action Yes No
1Fuel pressure check
1) Check fuel pressure referring to “Fuel Pressure
Inspection in Section 1G”.
Is check result satisfactory?Go to Step 2. Go to Step 5.
2Fuel pressure check
1) Start engine and warm it up to normal operating
temperature.
2) Keep engine speed at 4000 rpm.
Does fuel pressure show about the same value as Step 1?Go to Step 3. Go to Step 8.
3Fuel line check
1) Check fuel pipe, fuel hose and joint for fuel leakage.
Are they in good condition?Go to Step 4. Repair or replace
defective part.

Downloaded from www.Manualslib.com manuals search engine 1A-202 Engine General Information and Diagnosis:
A/C Condenser Cooling Fan Control System InspectionS6RW0D1104077
Wiring Diagram4Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Faulty fuel pressure
regulator.Repair or replace
damaged or damaged
part.
5Was fuel pressure higher than specification in Step 1?Go to Step 6. Go to Step 7.
6Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Faulty fuel pressure
regulator.Repair or replace
damaged or damaged
part.
7Fuel pump operating sound check
1) Remove fuel filler cap and then turn ON ignition switch.
Can you hear operating sound?Go to Step 8. Faulty fuel pump.
8Fuel line check
1) Check fuel pipe, fuel hose and joint for damage or
deform.
Are they in good condition?Clogged fuel filter, faulty
fuel pump, faulty fuel
pressure regulator or
fuel leakage from hose
connection in fuel tank.Repair or replace
defective part. Step Action Yes No
E01C01
3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238 3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238
BLK/WHT
WHT
1
GRN
27
E01-29
10
89
REDBLK
3
5BLK/WHT
RED/BLKE01-58
WHT
4E01-47 GRY
BLU/YEL
6
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKE01-31BLK
I6RW0D110055-01
1. Individual circuit fuse box No.1 5. A/C condenser cooling fan motor 9. “A/C” fuse
2. Ignition switch 6. A/C compressor 10. “IG COIL” fuse
3. A/C condenser cooling fan relay 7. ECM
4. A/C compressor relay 8. “FI” fuse