terminal SUZUKI SX4 2006 1.G Service User Guide

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-7
Priority of freeze frame data:
ECM has 4 frames where the freeze frame data can be stored. The first frame stores the freeze frame data of the
malfunction which was detected first. However, the freeze frame data stored in this frame is updated according to the
priority described. (If malfunction as described in the upper square “1” is detected while the freeze frame data in the
lower square “2” has been stored, the freeze frame data “2” will be updated by the freeze frame data “1”.)
In the 2nd through the 4th frames, the freeze frame data of each malfunction is stored in the order as each malfunction
is detected. These data are not updated.
Shown in the table are examples of how freeze frame data are stored when two or more malfunctions are detected.
Freeze frame data clearance:
The freeze frame data is cleared at the same time as clearance of DTC.
Non-Euro-OBD Model
ECM diagnosis troubles which may occur in the area
including the following parts when the ignition switch is
ON and the engine is running, and indicates the result by
turning on malfunction indicator lamp (MIL) (1).
• Heated oxygen sensor-1
• Heated oxygen sensor-2
• ECT sensor
•TP sensor
• Throttle actuator
• MAF sensor
• IAT sensor
• CMP sensor
• CKP sensor
• Knock sensor
• Wheel speed sensor
• CPU (Central Processing Unit) of ECM
• APP sensor
• Oil control valve (VVT model)
• Barometric pressure sensor
• A/C refrigerant pressure sensor
• ECM backup power supply
• Fuel level sensor
•CANECM and MIL operate as follows.
• MIL lights when the ignition switch is turned ON (but
the engine at stop) with the diagnosis switch terminal
ungrounded regardless of the condition of Engine and
Emission control system. This is only to check MIL in
the combination meter and its circuit.
• If the above areas of Engine and Emission control
system is free from any trouble after the engine start
(while engine is running), MIL turns OFF.
• When ECM detects a trouble which has occurred in
the above areas, it makes MIL turn ON while the
engine is running to warn the driver of such
occurrence of trouble and at the same time it stores
the trouble area in ECM back-up memory. (The
memory is kept as it is even if the trouble was only
temporary and disappeared immediately. And it is not
erased unless the power to ECM is shut off for
specified time or it is cleared by SUZUKI scan tool
(SUZUKI-SDT) (2).)
For further detail of the checking / clearing procedure,
refer to “DTC Check” or “DTC Clearance”. Priority Freeze frame data in frame 1
1Freeze frame data at initial detection of malfunction among misfire detected (P0300 – P0304), fuel
system too lean (P0171) and fuel system too rich (P0172)
2 Freeze frame data when a malfunction other than those in “1” is detected
Malfunction detected orderFrame
Frame 1 Frame 2 Frame 3 Frame 4
Freeze frame data to
be updated1st freeze frame
data2nd freeze frame
data3rd freeze frame
data
No malfunction No freeze frame data
1P0401 (EGR)
detectedData at P0401
detectionData at P0401
detection——
2P0171 (Fuel system)
detectedData at P0171
detectionData at P0401
detectionData at P0171
detection—
3P0300 (Misfire)
detectedData at P0171
detectionData at P0401
detectionData at P0171
detectionData at P0300
detection
4P0301 (Misfire)
detectedData at P0171
detectionData at P0401
detectionData at P0171
detectionData at P0300
detection

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-15
Terminal Arrangement of ECM Coupler (Viewed from Harness Side)
7. HO2S-2 (if equipped) 31. Fuel injector No.1 55. Starting motor control relay
8. Knock sensor 32. Fuel injector No.2 56. Transmission range switch (A/T
model)
9. MAF and IAT sensor 33. Fuel injector No.3 57. Starting motor
10. MAP sensor (if equipped) 34. Fuel injector No.4 58. “DOME” fuse
11. ECT sensor 35. EVAP canister purge valve 59. “IG COIL” fuse
12. A/C refrigerant pressure sensor 36. EGR valve (if equipped) 60. “IG2 SIG” fuse
13. A/C evaporator outlet air temp. sensor (Manual A/C
model)37. Oil control valve (Camshaft position control) (VVT
model)61. “FI” fuse
14. Blower motor relay 38. Fuel pump relay 62. “ST SIG” fuse
15. Blower motor 39. Fuel pump 63. “ST” fuse
16. Blower speed selector (Auto A/C model) 40. Radiator cooling fan motor relay 64. Ignition switch
17. Blower speed selector (Manual A/C model) 41. Radiator cooling fan motor 65. “IGN” fuse
18. A/C switch 42. A/C compressor relay 66. “RDTR” fuse
19. To BCM 43. A/C compressor 67. Main fuse box
20. Generator 44. A/C condenser cooling fan motor relay 68. Battery
21. ABS control module 45. A/C condenser cooling fan motor 69. Shield ground
22. TCM 46. A/C fuse 70. Barometric pressure sensor
23. To other control module and DLC connected CAN 47. Ignition coil assembly (for No.1 and No.4 spark plugs) 71. Engine ground
24. Fuel level sensor 48. Ignition coil assembly (for No.2 and No.3 spark plugs) 72. Body ground
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
I6RW0D110014-01

Downloaded from www.Manualslib.com manuals search engine 1A-16 Engine General Information and Diagnosis:
Connector: C01
Terminal Wire color Circuit Terminal Wire color Circuit
1 BLU/YEL Fuel injector No.1 output 31 — —
2 BLU/WHT Fuel injector No.2 output 32 — —
3 GRN/ORNEGR valve (stepper motor coil 2)
output33 — —
4 GRN/REDEGR valve (stepper motor coil 1)
output34 — —
5 GRN/WHTIgnition coil No.2 and No.3
output35 — —
6 GRN/YELIgnition coil No.1 and No.4
output36 — —
7— — 37— —
8— — 38— —
9— — 39— —
10 WHTOxygen signal of heated oxygen
sensor-140 WHTThrottle position sensor (sub)
signal
11 B R NOxygen signal of heated oxygen
sensor-2 (if equipped)41 GRYGround for shield wire of TP
sensor circuit
12 WHTCAN communication line (active
low signal) to TCM (for A/T
model)42 BLKGround for throttle position
sensor
13 REDCAN communication line (active
high signal) to TCM (for A/T
model) 43 REDOutput for 5 V power source of
throttle position sensor
14 GRY/REDOutput of 5 V power source for
MAP sensor (if equipped) and A/
C refrigerant pressure sensor
(A/C model)44 YEL Output of throttle actuator
15 BLK Ground for ECM 45 BLU Output of throttle actuator
16 BLU/RED Fuel injector No.3 output 46 BLK/REDHeater output of heated
oxygen sensor-1
17 BLU/ORN Fuel injector No.4 output 47 RED/BLUHeater output of heated
oxygen sensor-2 (if equipped)
18 BRN/YELEGR valve (stepper motor coil 4)
output (if equipped)48 YEL/GRN Starting motor signal
19 WHT/REDEGR valve (stepper motor coil 3)
output (if quipped)49 — —
20 RED/YEL CMP sensor signal 50 WHT/BLU Ground of ECM for shield wire
21 PNK CKP sensor signal 51 — —
22 — — 52 — —
23 — — 53 RED/BLKManifold absolute pressure
(MAP) sensor signal (if
equipped)
24 LT GRNEngine coolant temp. (ECT)
sensor signal54 GRNThrottle position sensor (main)
signal
25 BLK/YELIntake air temp. (IAT) sensor
signal55 GRY/BLU Ground for sensors
26 GRN/BLKMass air flow (MAF) sensor
signal56 RED Knock sensor signal
27 GRY Ground for MAF sensor 57 ORN Ground for sensors
28 BLU/YEL Generator control output 58 BLK/ORN Ground for ECM
29 BLU/BLKEVAP canister purge valve
output59 GRN/WHTOil control valve ground
(for engine with VVT system)
30 BLK Ground for ECM 60 GRN/REDOil control valve output
(for engine with VVT system)

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-17
Connector: E01
Terminal Wire color Circuit Terminal Wire color Circuit
1 BLK/RED Main power supply 31 BLK Ground for ECM
2WHT/REDPower source for ECM internal
memory32 GRNPower supply of throttle
actuator drive circuit.
3REDCAN communication line (active
high signal) to ABS control
module assembly33 — —
4BRNEngine revolution signal output
for EPS control module34 REDOutput for 5 V power source of
APP sensor (sub)
5— — 35BRNOutput for 5 V power source of
APP sensor (main)
6 — — 36 YEL APP sensor (sub) signal
7 — — 37 GRN APP sensor (main) signal
8— — 38— —
9— — 39— —
10 — — 40 — —
11 — — 4 1 — —
12 — — 42 — —
13 YEL/REDClock signal for immobilizer coil
antenna43 — —
14 — — 44 — —
15 GRN/WHT Fuel pump relay output 45 BRNThrottle actuator control relay
output
16 BLK/RED Main power supply 46 LT GRNRadiator cooling fan relay
output
17 — — 47 GRYA/C compressor relay output
(if equipped with A/C)
18 WHTCAN communication line (active
low signal) to ABS control
module assembly48 — —
19 BLU/WHTElectric load signal for heater
blower motor49 — —
20 GRN/WHT Brake light switch signal 50 BLKGround for shield wire of APP
sensor
21 — — 51 WHTGround for APP sensor (sub)
signal
22 — — 52 BLUGround for APP sensor (main)
signal
23 — — 53 — —
24 YEL/RED Fuel level sensor signal 54 ORN Ground for sensors
25 — — 55 RED/BLUA/C refrigerant pressure
sensor signal
(if equipped with A/C)
26 RED/BLU EPS signal 56 WHT/GRN —
27 — — 57 WHT/BLKA/C evaporator outlet air temp.
sensor signal
(if equipped with A/C)
28 YEL/BLKSerial communication line for
immobilizer coil antenna58 RED/BLK —
29 BLK/WHT Ignition switch signal 59 — —
30 WHTStarting motor control relay
output60 BRN/WHT Main power supply relay output

Downloaded from www.Manualslib.com manuals search engine 1A-28 Engine General Information and Diagnosis:
Trouble area
• Scan tool
• Connector related to CAN line (included in DLC)
• CAN line
• Power or ground circuit of DLC
• Control module communicated by CAN
–ECM
–TCM
– ABS control module
–BCM
– Combination meter
– Keyless start control module
– 4WD control module
• Power or ground circuit of control module communicated by CAN
[A]: Non-Taiwan model[K]: Combination meter connector (viewed from terminal side)
[B]: Taiwan model1. ECM
[C]: DLC connector (viewed from terminal side) 2. ABS control module
[D]: ECM connector (viewed from harness side) 3. BCM
[E]: 4WD control module connector (viewed from harness side) 4. 4WD control module
[F]: TCM connector (viewed from harness side) 5. Combination meter
[G]: Keyless start control module connector (viewed from harness side) 6. Keyless start control module
[H]: BCM connector (viewed from harness side) (Non-taiwan model) 7. TCM
[I]: BCM connector (viewed from harness side) (Taiwan model) 8. CAN junction connector
[J]: ABS control module connector (viewed from terminal side) 9. DLC

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-29
Troubleshooting
Step Action Yes No
1Scan tool check
1) Disconnect scan tool from DLC with ignition switch
turned OFF.
2) Check for proper connection to all terminals of scan tool
connector.
3) If OK, connect scan tool to another vehicle of this type
with ignition switch turned OFF.
4) Check communication between scan tool and ECM by
DTC check in ECM.
Is it possible to check DTC in ECM?Go to Step 2. Scan tool faulty. Refer
to its operator’s manual.
2DLC power circuit check
1) Check for proper connection to all DLC (1) terminals with
ignition switch turned OFF.
2) If OK, measure voltage between +B terminal (2) of DLC
and vehicle body ground with ignition switch turned to
ON position.
Is voltage 10 – 14 V?Go to Step 3. Repair power circuit.
3DLC ground circuit check
1) Ignition switch turn to OFF position.
2) Check DLC (1) ground circuits as follows.
• Measure resistance between signal ground terminal
(2) of DLC and vehicle body ground.
• Measure resistance between body ground terminal (3)
of DLC and vehicle body ground.
Is resistance 1
Ω or less?Go to Step 4. Repair ground circuit(s).
4DTC Check
1) Turn ignition switch to OFF position.
2) Connect scan tool to DLC.
3) Check DTC in the following control modules that
communicate with scan tool by K-line.
•BCM
• Keyless start control module
• 4WD control module
Is there any DTC other than CAN-DTC?Go to applicable
troubleshooting of DTC
other than CAN-DTC.Go to Step 5.
2
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
1
I7RW01110096-01
23 1
9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8
I7RW01110097-01

Downloaded from www.Manualslib.com manuals search engine 1A-30 Engine General Information and Diagnosis:
5CAN line check between DLC and BCM
1) Turn ignition switch to OFF position.
2) Disconnect BCM connector from BCM.
3) Check for proper connection to all terminals of BCM
connector.
4) If OK, check CAN lines between DLC and BCM
connector for open, short to power circuit, short to
ground circuit, short to other CAN line and high
resistance.
Are CAN lines between DLC and BCM connector in good
condition?Go to Step 6. Repair CAN line.
6Control module connector check
1) Turn ignition switch to OFF position.
2) Disconnect all the following control module connectors.
• Control modules communicated by CAN
–ECM
–TCM
– ABS control module
–BCM
– Combination meter
– Keyless start control module
– 4WD control module
3) Check for proper connection to each CAN line terminal
of all control module (communicated by CAN)
connectors.
4) If OK, connect connectors of all control module/sensor
communicated by CAN securely.
5) Check communication between scan tool and ECM/TCM
by DTC check in ECM/TCM.
Is it possible to check DTC in ECM and TCM?Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.Go to Step 7.
7CAN line check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control module
communicated by CAN.
3) Check all the following CAN lines for open, short to
power circuit, short to ground circuit, short to other CAN
line and high resistance.
• Between BCM connector and ABS control module
connector
• Between ABS control module connector and ECM
connector
• Between ECM connector and TCM connector
• Between BCM connector and keyless start control
module connector
• Between combination meter connector and 4WD
control module connector
• Between BCM connector and combination meter
connector
Are all CAN lines in good condition?Go to Step 8. Repair CAN line. Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-31
8Communication check between scan tool and ECM
1) Turn ignition switch to OFF position.
2) Connect ECM, BCM, ABS control module and
combination meter connectors.
3) Check communication between scan tool and ECM by
DTC check in ECM.
Is it possible to check DTC in ECM?A/T model: Go to Step
9.
M/T model: Substitute a
known-good ECM and
recheck.Go to Step 4 through
Step 11 of
“Troubleshooting for
CAN-DTC”.
9Communication check between scan tool and TCM
1) Turn ignition switch to OFF position.
2) Connect TCM connectors.
3) Check communication between scan tool and TCM by
DTC check in TCM.
Is it possible to check DTC in TCM?Identify malfunction
control module by
performing Step 13
through Step 14 of
“Troubleshooting for
CAN-DTC”.Go to Step 10.
10Internal circuit check in ECM
1) Turn ignition switch to OFF position and then disconnect
negative (–) cable at battery.
2) Disconnect TCM connectors.
3) Measure resistance between the followings
• Between CAN High terminal on DLC and “C06-17”
terminal on TCM connector
• Between CAN Low terminal on DLC and “C06-7”
terminal on TCM connector
Is each resistance 0 – 1
Ω?Substitute a known-
good TCM and recheck.Substitute a known-
good ECM and recheck. Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-43
THROTTLE MOTOR RELAY (ON/OFF)
ON: Throttle actuator (motor) control activated by ECM.
OF: Throttle actuator (motor) control stopped by ECM.
VEHICLE SPEED (km/h, mph)
It is computed based on pulse signals from front wheel
speed sensor (RH, LH) (for M/T model) or output shaft
speed sensor (VSS) (for A/T model).INJ PULSE WIDTH (FUEL INJECTION PULSE WIDTH,
msec.)
This parameter indicates time of the injector drive (valve
opening) pulse which is output from ECM (but injector
drive time of NO.1 cylinder for multiport fuel injection).
Visual InspectionS6RW0D1104008
Visually check the following parts and systems.
Engine Basic InspectionS6RW0D1104009
This check is very important for troubleshooting when ECM has detected no DTC and no abnormality has been found
in “Visual Inspection”.
Follow the flow carefully.Inspection item Reference section
• Engine oil – level, leakage “Engine Oil and Filter Change in Section 0B”
• Engine coolant – level, leakage “Coolant Level Check in Section 1F”
• Fuel – level, leakage“Fuel Lines and Connections Inspection in
Section 0B”
• Air cleaner element – dirt, clogging “Air Cleaner Filter Inspection in Section 0B”
• Battery – fluid level, corrosion of terminal“Battery Dismounting and Remounting in
Section 1J”
• Water pump belt – tension damage“Accessory Drive Belt Inspection in Section
0B”
• Throttle valve – operating sound“Electric Throttle Body Assembly On-Vehicle
Inspection in Section 1C”
• Vacuum hoses of air intake system – disconnection, looseness,
deterioration, bend“Vacuum Hose Inspection in Section 1B”
• Connectors of electric wire harness – disconnection, friction
• Fuses – burning
• Parts – installation, bolt – looseness
• Parts – deformation
• Other parts that can be checked visually
Also check the following items at engine start, if possible
• Malfunction indicator lamp – Operation “Malfunction Indicator Lamp (MIL) Check”
• Charge warning lamp – Operation “Generator Symptom Diagnosis in Section 1J”
• Engine oil pressure warning lamp – Operation “Oil Pressure Switch Inspection in Section 9C”
• Engine coolant temp. meter – Operation“Engine Coolant Temperature (ECT) Sensor
Inspection in Section 1C”
• Fuel level meter – Operation “Fuel Level Sensor Inspection in Section 9C”
• Tachometer – Operation
• Abnormal air being inhaled from air intake system
• Exhaust system – leakage of exhaust gas, noise
• Other parts that can be checked visually
Step Action Yes No
1Was “Engine and Emission Control System Check”
performed?Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2Check battery voltage
Is it 11 V or more?Go to Step 3. Charge or replace
battery.
3Is vehicle equipped with keyless start control system?Go to Step 4. Go to Step 5.

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-53
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
1MIL power supply check
1) Turn ignition switch to ON position.
Do other warning lights come ON?Go to Step 2. Go to Step 3.
2DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC in ECM.
Is there DTC(s) U0073 and/or U0121?Go to applicable DTC
diag. flow.Go to Step 3.
3Combination meter power supply and ground circuit
check
1) Turn ignition switch OFF position.
2) Disconnect connector from combination meter.
3) Check for proper connection to power supply and
ground terminals of combination meter connector.
4) If connections are OK, check that combination meter
circuit is as follows.
• Circuit voltage between combination meter power
supply terminal and vehicle body ground is 10 –14 V.
• Wiring harness resistance of combination meter
ground terminal and vehicle body ground is less than
3 Ω.
Are they in good condition?Go to Step 4. Repair or replace.
4CAN communication line circuit check
1) Check CAN communication line circuit between control
modules for open, short, high resistance and
connections referring to Step 5 to 10 under
“Troubleshooting for Communication Error with Scan
Tool Using CAN”.
Is circuit in good condition?Substitute a known-
good combination meter
and recheck. If MIL still
remains OFF, substitute
a known-good ECM and
recheck.Repair or replace.