
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 6E-16 ENGINE AND EMISSION CONTROL SYSTEM
1) Connect SUZUKI scan tool to DLC with ignition switch OFF,
if it is available.
2) Warm up engine to normal operating temperature.
3) Check engine idle speed and “IAC duty” as follows:
a) When using SUZUKI scan tool:
i) Select “Data List” mode on scan tool to check “IAC duty”.
(A) : SUZUKI scan tool
b) When using duty meter (3) (Vehicle without immobilizer
indicator lamp):
i) Set tachometer.
ii) Using service wire (2), ground “Diag. switch terminal” in
monitor connector (1) and connect duty meter between
“Duty output terminal (4)” and “Ground terminal (5)” of
monitor connector (1).
4) If duty and/or idle speed is out of specifications, inspect idle
air control system referring to “Diagnostic Flow Table B-4 Idle
Air Control System Check” in Section 6.
Engine idle speed and IAC duty
5) Remove service wire from monitor connector.
6) Check that specified engine idle speed is obtained with A/C
ON if vehicle is equipped with A/C.
If not, check A/C ON signal circuit and idle air control sys-
tem. NOTE:
IAC duty can be checked using monitor connector only
for vehicle not equipped with immobilizer indicator lamp.
[A] : When using SUZUKI scan tool
[B] : When using duty meter (Vehicle without immobilizer indicator lamp)
A/C OFF A/C ON
M/T vehicle700 ± 50 r/min (rpm)
5 – 25 %900 ± 50 r/min
(rpm)
A/T vehicle
at P/N range750 ± 50 r/min (rpm)
5 – 25 %900 ± 50 r/min
(rpm)
NOTE:
Above duty values are ON duty (low voltage rate) meter
indications.

Downloaded from www.Manualslib.com manuals search engine 6E-22 ENGINE AND EMISSION CONTROL SYSTEM
Fuel Delivery System
Fuel pressure inspection
1) Relieve fuel pressure in fuel feed line referring to “Fuel Pres-
sure Relief Procedure” in Section 6.
2) Disconnect fuel feed hose from fuel delivery pipe.
3) Connect special tools and hose between fuel delivery pipe
(1) and fuel feed hose (2) as shown in figure, and clamp
hoses securely to ensure no leaks occur during checking.
Special tool
(A) : 09912-58442
(B) : 09912-58432
(C) : 09912-58490
4) Check that battery voltage is above 11 V.
5) Turn ignition switch ON to operate fuel pump and after 2 sec-
onds turn it OFF. Repeat this 3 or 4 times and then check
fuel pressure.
Fuel pressure specification WARNING:
Be sure to perform work in a well-ventilated area and
away from any open flames, or there is a risk of a fire
breaking out.
CAUTION:
A small amount of fuel may be released when fuel hose is
disconnected. Place container under the joint with a
shop cloth so that released fuel is caught in container or
absorbed in cloth. Place that cloth in an approved con-
tainer.
3. Fuel return pipe
CONDITION FUEL PRESSURE
With fuel pump operating and
engine stopped270 – 310 kPa
2.7 – 3.1 kg/cm
2,
38.4 – 44.0 psi
At specified idle speed 210 – 260 kPa
2.1 – 2.6 kg/cm
2,
29.8 – 37.0 psi
With 1 min. after engine (fuel
pump) stop (Pressure
reduces as time passes)over 200 kPa
2.0 kg/cm
2, 28.4 psi

Downloaded from www.Manualslib.com manuals search engine ENGINE AND EMISSION CONTROL SYSTEM 6E-23
6) Start engine and warm it up to normal operating tempera-
ture.
7) Measure fuel pressure at idling.
If measured pressure doesn’t satisfy specification, refer to
“Diagnostic Flow Table B-3” in Section 6 and check each
possibly defective part. Replace if found defective.
8) After checking fuel pressure, remove fuel pressure gauge.
9) Remove special tools from fuel delivery pipe.
10) Connect fuel feed hose to fuel delivery pipe and clamp it
securely.
11) With engine “OFF” and ignition switch “ON”, check for fuel
leaks.
Fuel pump
ON-VEHICLE INSPECTION
1) Remove filler cap and turn ON ignition switch (2). Then fuel
pump operating sound should be heard from fuel filler (1) for
about 2 seconds and stop. Be sure to reinstall fuel filler cap
after checking.
If above check result is not satisfactory, advance to “Diag-
nostic Flow Table B-2” in Section 6.
2) Turn OFF ignition switch and leave over 10 minutes as it is.CAUTION:
As fuel feed line is still under high fuel pressure, make
sure to release fuel pressure according to following pro-
cedures.
Place fuel container under joint.
Cover joint with rag and loosen joint nut slowly to
release fuel pressure gradually.
CAUTION:
When fuel filler cap is removed in any procedure, work
must be done in a well-ventilated area, keep away from
any open flames and without smoking.
NOTE:
The fuel pressure regulator is the one body with the fuel
pump assembly so individual inspection of it is impossi-
ble.

Downloaded from www.Manualslib.com manuals search engine 6E-26 ENGINE AND EMISSION CONTROL SYSTEM
REMOVAL
1) Relieve fuel pressure according to procedure described in
“Fuel Pressure Relief Procedure” in Section 6.
2) Disconnect battery negative cable at battery.
3) Disconnect fuel injector couplers and release wire harness
from clamps.
4) Remove clamp bolt for fuel feed pipe and return pipe.
5) Remove fuel delivery pipe bolts (2).
6) Remove fuel injector(s) (3).
INSPECTION
1) Install injector (3) and fuel pressure regulator (4) to special
tool (injector checking tool).
Special tool
(A) : 09912-58421
2) Connect special tools (hose and attachment) to fuel feed
hose (1) of vehicle.
Special tool
(B) : 09912-58432
3) Connect special tool (test lead) to injector.
Special tool
(C) : 09930-88530
4) Install suitable vinyl tube onto injector nozzle to prevent fuel
from splashing out when injecting. CAUTION:
A small amount of fuel may come out after removal of
fuel injectors, cover them with shop cloth.
WARNING:
As fuel is injected in this inspection, perform in a well
ventilated area and away from open flames.
Use special care to prevent sparking when connecting
and disconnecting test lead to and from battery.
2. Fuel return line

Downloaded from www.Manualslib.com manuals search engine 6E-34 ENGINE AND EMISSION CONTROL SYSTEM
1) Disconnect negative cable at battery.
2) For sensor-1, remove exhaust manifold cover (1) and dis-
connect connector of heated oxygen sensor and release its
wire harness from clamps.
3) For sensor-2, disconnect connector of heated oxygen sensor
and release its wire harness from clamp. Hoist vehicle and
then remove exhaust No.1 pipe covers (3).
4) Remove heated oxygen sensor (2) from exhaust manifold or
exhaust No.1 pipe.
INSTALLATION
Reverse removal procedure noting the following.
Tighten heated oxygen sensor (2) to specified torque.
Tightening torque
Heated oxygen sensor (a) : 45 N·m (4.5 kg-m, 32.5 lb-ft)
Connect connector of heated oxygen sensor (2) and clamp
wire harness securely.
After installing heated oxygen sensor (2), start engine and
check that no exhaust gas leakage exists.
Camshaft position sensor
INSPECTION
Check camshaft position sensor referring to “DTC P0340 (No. 15)
Diag. Flow Table” in Section 6. If malfunction is found, replace.
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect connector from camshaft position sensor.
3) Remove camshaft position sensor from cylinder head.
INSTALLATION
1) Check that O-ring is free from damage.
2) Check that camshaft position sensor and signal rotor tooth
are free from any metal particles and damage.
3) Install camshaft position sensor to sensor case.
Tightening torque
Camshaft position sensor bolt
(a) : 10 N·m (1.0 kg-m, 7.5 lb-ft)
4) Connect connector to it securely.
5) Connect negative cable to battery.
[A] : HO2S-1
[B] : HO2S-2