SUZUKI JIMNY 2005 3.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 6E-6 ENGINE AND EMISSION CONTROL SYSTEM
Fuel Delivery System
The fuel delivery system consists of the fuel tank (1), fuel pump (2), fuel filter (3), fuel pressure regulator (11),
delivery pipe (9) and fuel injectors (10).
The fuel in the fuel tank is pumped up by the fuel pump, filtered by the fuel filter and fed under pressure to each
injector through the delivery pipe.
As the fuel pressure applied to the injector (the fuel pressure in the fuel feed line) is always kept a certain
amount higher than the pressure in the intake manifold by the fuel pressure regulator, the fuel is injected into the
intake port of the cylinder head when the injector open according to the injection signal from ECM.
The fuel relieved by the fuel pressure regulator returns through the fuel return line (8) to the fuel tank.
Fuel pump
An in-tank type electric pump has been adopted for the fuel pump
(1). Incorporated in the pump assembly are;
Tank pressure control valve (2) which keeps the pressure in
the fuel tank constant, and prevents the fuel from spouting
and tank itself from being deformed.
Relief valve (3) which prevents the pressure in tank from ris-
ing excessively.
Fuel cut valve (4) which closes as the float rises so that the
fuel will not enter the canister when the fuel level in the tank
rises high depending on the fuel level in the tank and the
vehicle tilt angle.
Also, a fuel filter (5) is included and a fuel level gauge (6) is
attached.
4. Fuel cut valve 6. To EVAP canister 12. To intake manifold (vacuum passage)
5. Fuel tank pressure control valve 7. Fuel feed line

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-7
Electronic Control System
The electronic control system consists of 1) various sensors which detect the state of engine and driving condi-
tions, 2) ECM which controls various devices according to the signals from the sensors and 3) various controlled
devices.
Functionally, it is divided into the following sub systems:
Fuel injection control system
Idle speed control system
Fuel pump control system
A/C control system (if equipped)
A/C condenser fan control system
EGR system (if equipped)
Evaporative emission control system
Oxygen sensor heater control system
Ignition control system
Also, with A/T model, ECM sends throttle valve opening signal and over drive cut signal to transmission control
module to control A/T.
NOTE:
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the other side.
1. IAT sensor a : Immobilizer indicator lamp (if equipped) A : ECM
2. TP sensor b : A/C condenser fan motor relay (if equipped) B : A/T control module
3. Monitor connector c : Main relay C : EVAP canister
4. CO adjusting resistor (if equipped) d : Fuel pump relay D : DLC
5. CKP sensor e : IAC valve E : ABS control module (if equipped)
6. MAP sensor f : EVAP canister purge valve
7. CMP sensor g : EGR valve (if equipped)
8. Transmission range switch h : Fuel injector
9. VSS i : Ignition coil assemblies
10. HO2S-1 (if equipped) J : MIL
11. HO2S-2 (if equipped)
12. ECT sensor
13. Knock sensor

Downloaded from www.Manualslib.com manuals search engine 6E-8 ENGINE AND EMISSION CONTROL SYSTEM
Engine & emission control input / output table
INPUTOUTPUT
ELECTRIC CONTROL DEVICE
DIAGNOSIS SWITCH TERMINAL
(VEHICLE WITHOUT IMMOBILIZER INDICATOR LAMP)
BAROMETRIC PRESSURE SENSOR
(VEHICLE WITH IMMOBILIZER INDICATOR LAMP)
STOP LAMP SWITCH
STARTER SWITCH
IGNITION SWITCH
LIGHTING SWITCH
REAR DEFOGGER SWITCH (IF EQUIPPED)
BLOWER SWITCH
A/C SWITCH (IF EQUIPPED)
A/C EVAPORATOR TEMP. SENSOR (IF EQUIPPED)
VSS
HEATED OXYGEN SENSOR-1 (IF EQUIPPED)
HEATED OXYGEN SENSOR-2
(IF EQUIPPED)For detecting deterioration of
three way catalytic converter
IAT SENSOR
ECT SENSOR
TP SENSOR
MAP SENSOR
CMP SENSOR
CKP SENSOR
TEST SWITCH TERMINAL
(VEHICLE WITHOUT IMMOBILIZER INDICATOR LAMP)
KNOCK SENSOR
FUEL PUMP RELAY
FUEL INJECTOR
HO2S HEATER
IAC VALVE
IGNITION COIL WITH IGNITER
EGR VALVE (IF EQUIPPED)
EVAP CANISTER PURGE VALVE
A/C COMPRESSOR CLUTCH
MIL
MAIN RELAY
TRANSMISSION CONTROL MODULE SIGNAL FROM SENSOR, SWITCH AND CONTROL MODULEA/C CONDENSER FAN RELAY

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-9
ECM INPUT / OUTPUT CIRCUIT DIAGRAM
For TYPE A (See NOTE)
NOTE:
Type A is other than follows.
Type B is left hand steering vehicle equipped with fasten seat belt light and EGR valve or right hand
steering vehicle equipped with fasten seat belt light and immobilizer control system.

Downloaded from www.Manualslib.com manuals search engine 6E-10 ENGINE AND EMISSION CONTROL SYSTEM
1. CKP sensor 20. Power steering pressure switch
(if equipped)39. Ignition coil assembly (for No.1 and No.4 spark plugs)
2. CMP sensor 21. A/C switch 40. Ignition coil assembly (for No.2 and No.3 spark plugs)
3. VSS 22. A/C refrigerant pressure switch
(if equipped)41. Stop lamp switch
4. MAP sensor 23. Immobilizer control module (if equipped) 42. Stop lamp
5. Knock sensor 24. Data link connector 43. Lighting switch
6. TP sensor 25. Injector No.1 44. Position lamp
7. ECT sensor 26. Injector No.2 45. Rear defogger switch (if equipped)
8. IAT sensor 27. Injector No.3 46. Rear defogger (if equipped)
9. Heated oxygen sensor-1 (if equipped) 28. Injector No.4 47. A/C compressor clutch (if equipped)
10. Heated oxygen sensor-2 (if equipped) 29. IAC valve 48. Ignition switch
11. A/C evaporator temp. sensor (if equipped) 30. EVAP canister purge valve 49. Main relay
12. Speedometer 31. Fuel pump relay 50. CO adjusting register (if equipped)
13. Fuel level sensor 32. Fuel pump 51. Starting motor
14. TCM (A/T) 33. A/C condenser fan relay (if equipped) 52. 4WD controller (4WD)
15. Transmission range switch (A/T) 34. A/C condenser fan motor (if equipped) 53. ABS control module (if equipped)
16. Shift lock solenoid (A/T, if equipped) 35. EGR valve (if equipped) 54. Engine ground
17. Backup lamp 36. Malfunction indicator lamp 55. Body ground
18. Heater fan motor 37. Immobilizer indicator lamp (if equipped)
19. Heater fan switch 38. Monitor connector (vehicle without immo-
bilizer indicator lamp)

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-11
For TYPE B (See NOTE)
NOTE:
See NOTE in “ECM INPUT / OUTPUT CIRCUIT DIAGRAM” for applicable model.

Downloaded from www.Manualslib.com manuals search engine 6E-12 ENGINE AND EMISSION CONTROL SYSTEM
1. CKP sensor 20. Power steering pressure switch
(if equipped)39. Ignition coil assembly (for No.1 and No.4 spark plugs)
2. CMP sensor 21. A/C switch 40. Ignition coil assembly (for No.2 and No.3 spark plugs)
3. VSS 22. A/C refrigerant pressure switch
(if equipped)41. Stop lamp switch
4. MAP sensor 23. Immobilizer control module (if equipped) 42. Stop lamp
5. Knock sensor 24. Data link connector 43. Lighting switch
6. TP sensor 25. Injector No.1 44. Position lamp
7. ECT sensor 26. Injector No.2 45. Rear defogger switch (if equipped)
8. IAT sensor 27. Injector No.3 46. Rear defogger (if equipped)
9. Heated oxygen sensor-1 (if equipped) 28. Injector No.4 47. A/C compressor clutch (if equipped)
10. Heated oxygen sensor-2 (if equipped) 29. IAC valve 48. Ignition switch
11. A/C evaporator temp. sensor (if equipped) 30. EVAP canister purge valve 49. Main relay
12. Speedometer 31. Fuel pump relay 50. CO adjusting register (if equipped)
13. Fuel level sensor 32. Fuel pump 51. Starting motor
14. TCM (A/T) 33. A/C condenser fan relay (if equipped) 52. 4WD controller (4WD)
15. Transmission range switch (A/T) 34. A/C condenser fan motor (if equipped) 53. ABS control module (if equipped)
16. Shift lock solenoid (A/T, if equipped) 35. EGR valve (if equipped) 54. Engine ground
17. Backup lamp 36. Malfunction indicator lamp 55. Body ground
18. Heater fan motor 37. Immobilizer indicator lamp (if equipped)
19. Heater fan switch 38. Monitor connector (vehicle without immo-
bilizer indicator lamp)

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-13
ECM TERMINAL ARRANGEMENT TABLE
For TYPE A (See NOTE)
CONNEC-
TORTERMINAL WIRE COLOR CIRCUITCONNEC-
TORTERMINAL WIRE COLOR CIRCUIT
E191 B Ground for ECM
E187 W Backup power source
2 B/R Ground for drive circuit
8R/GImmobilizer indicator lamp
(if equipped)
3 B/R Ground for drive circuitDuty output terminal (vehicle without
immobilizer indicator lamp)
4 Bl/G Canister purge valve 9––
5 Bl/OrPower steering pressure switch
(if equipped)10 Bl Main relay
6 G/Y IAC valve 11 Br Tachometer
7 P/B Heater of HO2S-1 (if equipped) 12 Y/B Data link connector (5 V)
8 W/B No.4 fuel injector 13 WHeated oxygen sensor-2
(if equipped)
9 R/W No.1 fuel injector 14 W/BIDiagnosis switch terminal
(vehicle without immobilizer indicator
lamp)
10 B/Bl Ground for sensor circuit 15 PTest switch terminal
(vehicle without immobilizer indicator
lamp)
11 W CMP sensor 16 G/W A/C SW signal (if equipped)
12––17 R/Y Lighting switch
13R
R/BlHeated oxygen sensor-1
(if equipped)
CO adjusting resistor (w/o HO2S)18 P/B A/C condenser fan relay (if equipped)
14 G/B ECT sensor 19 W/G Fuel pump relay
15 Lg/B IAT sensor 20 B/Bl Ground for sensor
16 Lg TP sensor 21 B/RThrottle opening signal output for A/T
(A/T)
17 Gr/BIEGR valve (stepper motor coil 3, if
equipped)22 Y/RFuel level gauge (vehicle with immo-
bilizer indicator lamp)
18 GrEGR valve (stepper motor coil 1, if
equipped)23––
19 Br/BIG coil assembly for No.2 and 3 spark
plugs24 Bl/Y Heater blower switch
20 Br/WIG coil assembly for No.1 and 4 spark
plugs
21 R/G No.2 fuel injector
E171––
22 Lg/R Power supply for sensor 2 R R-range signal (A/T)
23 G/R CKP sensor 3––
24––4––
25 W Knock sensor 5 B/Or Overdrive cut signal (A/T)
26 G MAP sensor 6 G/Y D-range idle-up signal (A/T)
27 W/R A/C evaporator temp. sensor 7 G/W Stop lamp switch
28 Gr/BEGR valve (stepper motor coil 4, if
equipped)8––
29 Gr/REGR valve (stepper motor coil 2, if
equipped)9 B/W Ignition switch
30––10––
31 W/G No.3 fuel injector 11 Y Vehicle speed sensor
12 G ABS signal (if equipped)
E181 P A/C compressor clutch (if equipped) 13B/Y (M/T)
B/R (A/T)Engine start signal
2 V/Y Malfunction indicator lamp 14––
3 P/G Data link connector (12 V) 15––
4 R/BI Heater of HO2S-2 (if equipped) 16 R/W Rear defogger switch (if equipped)
5 Bl/B Power source 17 G/RA/T failure signal (A/T) (vehicle with
immobilizer indicator lamp)
6 Bl/B Power source
NOTE:
See NOTE in “ECM INPUT / OUTPUT CIRCUIT DIAGRAM” for applicable model.

Downloaded from www.Manualslib.com manuals search engine 6E-14 ENGINE AND EMISSION CONTROL SYSTEM
For TYPE B (See NOTE)
CONNEC-
TORTERMINAL WIRE COLOR CIRCUITCONNEC-
TORTERMINAL WIRE COLOR CIRCUIT
E191 B Ground for ECM
E187 W Backup power source
2 B/R Ground for drive circuit
8R/GImmobilizer indicator lamp
(if equipped)
3 B/R Ground for drive circuitDuty output terminal (vehicle without
immobilizer indicator lamp)
4 Bl/G Canister purge valve 9––
5 Bl/OrPower steering pressure switch
(if equipped)10 Bl Main relay
6 G/Y IAC valve 11 B/W Ignition switch
7 P/B Heater of HO2S-1 (if equipped) 12 R/W Rear defogger switch
8 W/B No.4 fuel injector 13––
9 R/W No.1 fuel injector 14 W/BIDiagnosis switch terminal
(vehicle without immobilizer indicator
lamp)
10 B/Bl Ground for sensor circuit 15 PTest switch terminal
(vehicle without immobilizer indicator
lamp)
11 W CMP sensor 16 G/W A/C SW signal (if equipped)
12––17 R/Y Lighting switch
13R
R/BlHeated oxygen sensor-1
(if equipped)
CO adjusting resistor (w/o HO2S)18 P/B A/C condenser fan relay (if equipped)
14 G/B ECT sensor 19 W/G Fuel pump relay
15 Lg/B IAT sensor 20B/Y (M/T)
B/R (A/T)Engine start signal
16 Lg TP sensor 21 G/W Stop lamp switch
17 Gr/BIEGR valve (stepper motor coil 3, if
equipped)22 Y Vehicle speed sensor
18 GrEGR valve (stepper motor coil 1, if
equipped)23––
19 Br/BIG coil assembly for No.2 and 3 spark
plugs24––
20 Br/WIG coil assembly for No.1 and 4 spark
plugs
21 R/G No.2 fuel injector
E171 W/R A/C evaporator temp. sensor
22 Lg/R Power supply for sensor 2 R R-range signal (A/T)
23 G/R CKP sensor 3––
24––4––
25 W Knock sensor 5 B/Or Overdrive cut signal (A/T)
26 G MAP sensor 6 G/Y D-range idle-up signal (A/T)
27––7 Y/B Data link connector
28 Gr/BEGR valve (stepper motor coil 4, if
equipped)8––
29 Gr/REGR valve (stepper motor coil 2, if
equipped)9 V/Y Malfunction indicator lamp
30––10––
31 W/G No.3 fuel injector 11 P/G Data link connector (12 V)
12 G ABS signal (if equipped)
E181 P A/C compressor clutch (if equipped) 13 Bl/Y Heater blower switch
2––14 B/Bl Ground for sensor
3––15 B/R Throttle opening sensor
4 R/BI Heater of HO2S-2 (if equipped) 16 Br Tachometer
5 Bl/B Power source 17––
6 Bl/B Power source
NOTE:
See NOTE in “ECM INPUT / OUTPUT CIRCUIT DIAGRAM” for applicable model.

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-15
On-Vehicle Service
Accelerator cable adjustment
1) With throttle valve closed, check accelerator pedal play
which should be within following specification.
If measured value is out of specification, adjust it to specifi-
cation with cable adjusting nut (1).
Accelerator pedal play
“a” : 2 – 7 mm (0.08 – 0.27 in.)
2) With accelerator pedal depressed fully, check clearance
between throttle lever (2) and lever stopper (3) (throttle
body) which should be within following specification.
If measured value is out of specification, adjust it to specifi-
cation by changing height of pedal stopper bolt (1).
Accelerator cable adjustment clearance
(With pedal depressed fully)
“a” : 0.5 – 2.0 mm (0.02 – 0.07 in.)
Idle speed / idle air control (IAC) duty inspection
Before idle speed / IAC duty check, make sure of the following.
Lead wires and hoses of Electronic Fuel Injection and engine
emission control systems are connected securely.
Accelerator cable has some play, that is, it is not tight.
Valve lash is checked and adjusted according to mainte-
nance schedule.
Ignition timing is within specification.
All accessories (wipers, heater, lights, A/C, etc.) are out of
service.
Air cleaner has been properly installed and is in good condi-
tion.
No abnormal air inhaling from air intake system.
After above items are all confirmed, check idle speed and IAC
duty as follows.
NOTE:
Before starting engine, place transmission gear shift
lever in “Neutral” (shift selector lever to “P” range for A/T
vehicle), and set parking brake and block drive wheels.