2006 SUZUKI SX4 relay

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-181
Reference waveform No.1
Fuel injector signal (1) with engine idlingReference waveform No.2
No.1 fuel injector signal (2) with engine idling E01-58RED/
BLKA/C condenser fan
relay
(if equipped with A/
C)0 – 1 VBlower speed selector ON
A/C or defroster switch ON
Engine running or Engine
coolant temperature at
more than 110 °C (230 °F)
with engine running.—
10 – 14 VExcept the above
mentioned condition with
engine running
E01-59 — — — — —
E01-60BRN/
WHTMain power supply
relay output10 – 14 V Ignition switch turned OFF.
—
0 – 2 V Ignition switch turned ON. Terminal
No.Wire
colorCircuit Normal voltage Condition Remarks
Measurement
terminalCH1: “C01-2” to “C01-58”
Oscilloscope
settingCH1: 20 V/DIV
TIME: 1 ms/DIV
Measurement
condition• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Fuel injection pulse width: 2-4 msec. 3. 10 – 14 V
I4RS0B110050-01
Measurement
terminalCH1: “C01-20” to “C01-58”
CH2: “C01-1” to “C01-58”
Oscilloscope
settingCH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition• After warmed up to normal
operating temperature
• Engine at specified idle speed
[A]: For VVT model
[B]: For non-VVT model
1. Cylinder reference signal (CMP reference signal)
3. 720° crank angle
I4RS0B110051-01

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-193
ECM Power and Ground Circuit CheckS6RW0D1104073
Wiring Diagram
Circuit Description
When the ignition switch is turned ON, the main relay turns ON (the contact point closes) and the main power is
supplied to ECM.
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
BLK/RED
BLK/RED
BLK/RED
BLK/YELBLK/YEL
BLK/YEL
GRN
BRN/WHT
12V5V
2
13
12
13
14-1
15-1
15-2 14-2 4
56
E01-29
E01-1
E01-60
E01-16
9 87
1011
WHTWHT/REDE01-2
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKBLK
WHT
GRY/RED
RED/BLK
GRY/BLU
C01-14
C01-53
C01-55
E01-54ORN
RED/BLUE01-55
BRNGRNBLU
REDYELWHT
E01-35E01-37E01-52
E01-51
E01-34E01-36
E01-50
REDGRN
WHTBLK
BLU
YEL
C01-43C01-54
C01-40C01-42
C01-45
C01-44
C01-41
E01-31
GRY
BLK
I6RW0D110052-01
1. Main fuse box 7. Individual circuit fuse box No.1 13. A/C refrigerant pressure sensor (if equipped with A/C)
2. Ignition switch 8. “IGN” fuse 14-1. APP sensor (main)
3. Main relay 9. “FI” fuse 14-2. APP sensor (sub)
4. BCM (included in junction block assembly) 10. “DOME” fuse 15-1. TP sensor (main)
5. “IG COIL” fuse 11. DLC 15-2. TP sensor (sub)
6. ECM 12. MAP sensor (if equipped)

Downloaded from www.Manualslib.com manuals search engine 1A-194 Engine General Information and Diagnosis:
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
1Circuit fuse check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection to ECM connector at “E01-
2”, “E01-29”, “E01-60”, “E01-1”, “E01-16”, “E01-31”,
“C01-58”, “C01-15” and “C01-30” terminals.
3) If OK, check “DOME” fuse and “IG COIL” fuse for
blowing.
Are “DOME” fuse and “IG COIL” fuse in good condition?Go to Step 2. Replace fuse (s) and
check for short in
circuits connected to
fuse(s).
2Power supply circuit check
1) Measure voltage between “E01-2” terminal of ECM
connector and body ground.
Is voltage 10 – 14 V?Go to Step 3. “WHT/RED” or “WHT”
wire is open circuit.
3Ignition signal check
1) Turn ignition switch to ON position.
2) Measure voltage between “E01-29” terminal of ECM
connector and body ground.
Is voltage 10 – 14 V?Go to Step 4. “BLK/WHT” or “GRN”
wire is open circuit.
4Main relay circuit check
1) Turn ignition switch to OFF position.
2) Check “FI” fuse (1) (15 A) in individual circuit fuse box
No.1 for blowing.
3) If OK, measure voltage between “E01-60” terminal of
ECM connector and body ground.
Is voltage 10 – 14 V?Go to Step 5. Go to Step 9.
5Main relay circuit check
1) Connect connectors to ECM with ignition switch turned
OFF.
2) Turn ignition switch to ON position.
3) Measure voltage between “E01-60” terminal of ECM
connector and body ground.
Is voltage 0 – 1 V?Go to Step 7. Go to Step 6.
1
I5RW0A110058-02

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-196 Engine General Information and Diagnosis:
Fuel Injector Circuit CheckS6RW0D1104074
Wiring Diagram11Sensor 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”, “E01-35”, “E01-34” and “C01-43” terminal of
ECM connector and vehicle body ground.
Is each voltage 4 – 6 V?ECM power and ground
circuit is in good
condition.Go to Step 12.
12Sensor power source circuit check
1) Disconnect connectors from ECM, TP sensor, MAP
sensor, A/C refrigerant pressure sensor (if equipped with
A/C) and APP sensor with ignition switch turned OFF.
2) Measure each resistance between “C01-14”, “E01-35”,
“E01-34” and “C01-43” terminal of ECM connector and
vehicle body ground.
Is each resistance infinity?Check internal short
circuit of TP sensor,
MAP sensor, A/C
refrigerant pressure
sensor (if equipped with
A/C) and/or APP
sensor.“GRY/RED”, “BRN” and/
or “RED” wire is shorted
to ground circuit. Step Action Yes No
BLK/WHT
BLK/RED
BLK/RED
WHTBLK/YELBLK/YEL
BLK/YEL
GRN
BRN/WHT
12V5V
9
2 83E01-29
E01-1
E01-60
10 11
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
C01-1
C01-2
C01-16
C01-17
BLK/REDBLK/RED
BLU/YEL
BLU/RED
BLU/ORN
BLU/WHT
E01-16
4
5
6
71
C01-58
C01-15 C01-30
BLK/ORN
BLKBLKBLKE01-31
I6RW0D110053-01
1. Main fuse box 4. No.1 injector 7. No.4 injector 10. “FI” fuse
2. Main relay 5. No.2 injector 8. “IG COIL” fuse 11. “IGN” fuse
3. ECM 6. No.3 injector 9. Ignition switch

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