air conditioning ISUZU TROOPER 1995 Repair Manual

E) REMOVAL
Preparation: Battery ground cable
1. Air cleaner assembly
2. Radiator upper fan shroud
• Remove from radiator.
3. Cooling fan assembly
• Remove four nuts, then the cooling fan
assembly.
4. Accelerator Padal cable
• Disconnect from throttle body and cable
bracket.
5. Canister vacuum hose
• Disconnect from vacuum pipe.
6. Vacuum booster hose
• Disconnect from common chamber.
7. Connectors
• Disconnect from Manifold Absolute Pressure,
canister Vacuum
Switching Valve (VSV),
Exhaust Gas Recirculation VSV, Intake Air
Temperature and ground cable.
8. High tension cables
• Disconnect from cylinder head cover.
9.
Ignition Control Module assembly
• Disconnect three Electronic Ignition con­
nectors.
• Remove three Electronic Ignition bracket fixing
bolts, and remove Electronic Ignition assembly
with high tension cables.
10.
Throttle body
• Remove four fixing bolts.
11. Vacuum hoses
• Disconnect vacuum hoses on canister VSV and
Exhaust Gas Recirculation
VSV from the
throttle body.
12.
Positive Crankcase Ventilation hose
• Disconnect from common chamber.
13.
Fuel Pressure Control Valve vacuum hose
• Disconnect from common chamber.
14.
Evaporative Emission Canister Purge hose
• Disconnect from common chamber.
15.
Exhaust Gas Recirculation Valve assembly
• Remove five bolts from common chamber,
exhaust
manifold and cylinder head cover.
16.
Common chamber duct (DOHC)
• Remove four bolts, four nuts and three bracket
fixing
bolts, then remove the common
chamber duct.
• Disconnect ground cable from rear side of
common chamber.
ENGINE (V6 3.2L DOHC AND SOHC) 6A1-39
17. Common chamber
• Remove six bolts, two nuts and three bracket
fixing
bolts, then remove the common
chamber.
18.
Fuelhoses
• Disconnect feed and return fuel hoses from fuel
pipes, and remove two bracket fixing bolts on
the
cylinder head cover.
19.
Power steering pump drive belt
20. Air Conditioning compressor drive belt
21. Generator drive belt
22. Power steering pump
23. Fan pulley assembly
24. Crankshaft pulley assembly
~ • Using special tool J-8614-01, hold crankshaft
~ pulley.
•
Remove center bolt, then the pulley.
25. Oil cooler hose
• Remove two cooler hose bracket fixing bolts on
the timing
belt cover.
26.
Timing belt cover
27. Pusher
\fl CAUTION:
'if The pusher prevents air from entering the oil
chamber. Its rod must always be facing upward.
28.
Timing belt
CAUTIONS:
1) Do not bend or twist the belt, otherwise its
core
could be damaged. The belt should not
be bent at a radius less than 30mm.
2) Do not allow oil or other chemical substances
to come in contact
with the belt. They will
shorten the belt life.
3) Do not attempt to pry or stretch the belt with a
screwdriver
or any other tool during
installation.
4) Store timing belt in a cool and dark place.
Never expose the belt to direct sunlight or
heat.
29.
Cylinder head cover
30. Camshaft
• Camshaft pulley fixing bolt and camshaft pulley
•
Front plate fixing bolts and front plate
• Chain
tensioner fixing bolts (DOHC) and
camshaft bracket fixing
bolts
•
Camshaft, oil seal and camshaft end plug
31. Swing arm (DOHC)
32. Rocker
arm (SOHC)
•
Fixing bolt and rocker arm
33.
Spark plugs
• Keep valve in home position by feeding the
compressed air to the
cylinder from spark plug
hole.

6A 1-40 ENGINE (V6 3.2L DOHC AND SOHC)
34. Valve springs
35.
• Refer to section 6A "Valve springs oil
controller, valve, valve guide (and HLA for
DOHC)" removal.
Valve stem oil controllers
~·
Using special tool, remove each valve stem oil
controller.
Remover: J-37281
1••1 INSTALLATION
35. Valve stem oil controllers
• Refer to Section 6A "Valve springs, oil
controller, valve, valve guide (and HLA for
DOHC)" installation.
34. Valve springs
li5\l • Using special tool, install each valve spring.
~ Spring compressor: J-39251
33. Spark plugs
~~~· Tighten each spark plug to the specified torque.
Torque
N·m (lb·ft) I 18 (13)
32. Rocker arm (SOHC)
~~~ • Tighten bolt to the specified torque.
Torque
N·m (lb·ft) I 18 (13)
31. Swing arm (DOHC)
30. Camshaft
• Refer to Section 6A "Camshaft installation".
29. Cylinder head cover
~~~ • Tighten bolts to the specified torque.
Torque
N-m (lb·in) I 8 (69)
28. Timing belt
• Refer to "Timing belt removal and installation"
in this section.
27. Pusher
• Tighten bolt to the specified torque.
~~~ Torque N·m (lb·ft) 19 (14)
26. Timing belt cover
• Remove crankshaft pulley that was installed in
step
30.
~~~· Tighten bolts to the specified torque.
Torque
N·m (lb-ft) I 18 (13)
25. Oil cooler hose
~ • Tighten oil cooler hose bracket bolts to the
~ specified torque.
Torque
N-m (lb·ft) I 18 (13)
24. Crankshaft pulley assembly
f'Qil • Using special tool J-8614-01, hold the
~ crankshaft pulley.
~~~· Tighten center bolt to the specified torque.
Torque
N·m (lb·ft) I 167 (123)
23. Fan pulley assembly
~~~ • Tighten fixing bolt to the specified torque.
Torque
N·m (lb·ft) I 22 (16)
22. Power steering pump
~ • Tighten pump fixing bolts to the specified
~ torque.
Torque
N·m (lb·ft) 56 (41)
21. Generator drive belt
• Engage and adjust.
• Refer to Section 6B "Drive belt adjustment".
20. Air Conditioning compressor drive belt
• Engage and adjust.
• Refer to Section 6B "Drive belt adjustment".
19. Power steering pump drive belt
• Engage and adjust.
• Refer to Section 6B "Drive belt adjustment".
18. Fuel hoses
• Connect surely the hoses and install the bolts
on the head cover.
17. Common chamber
~~~· Tighten bolts and nuts to the specified torque.
Bolts
Torque
N-m (lb·ft) 24 (17)
Nuts
Torque
N·m (lb·ft) 24 (17)
16. Common chamber duct (DOHC)
~~~ • Tighten bolts and nuts to the specified torque.
Bolts
Torque
N·m (lb·ft) 24 (17)
Nuts
Torque
N·m (lb·ft) 24 (17)
15. Exhaust Gas Recirculation Valve assembly
~~~· Tighten bolts to the specified torque.
Exhaust gas recirculation valve side
Torque
N·m (lb-in) 8 (69)
Exhaust manifold side
Torque
N-m (lb·ft) 28 (21)
14. Evaporative Emission Canister Purge hose
13. Fuel Pressure Control Valve vacuum hose
12. Positive Crankcase Ventilation hose
10. Throttle body
~~~ • Tighten bolts to the specified torque.
Torque
N-m (lb·ft) I 19 (14)
..

EJ REMOVAL
Preparation: • Remove engine hood.
• Drain radiator Engine Coolant.
• Disconnect battery ground cable.
1. Air cleaner assembly
2. Radiator upper fan shroud
• Remove from radiator.
3. Radiator fan assembly
• Remove four nuts, then the radiator fan
assembly.
4. Accelerator Pedal cable
• Disconnect from throttle body and cable
bracket.
5. Canister vacuum hose
6. Vacuum booster hose
• Disconnect from common chamber.
7. Connectors
• Disconnect from Manifold Absolute Pressure,
canister Vacuum Switching
Valve (VSV),
Exhaust Gas Recirculation VSV,
Intake Air
Temperature and ground cable.
8. High tension cables
• Disconnect from cylinder head cover.
9. Ignition Control Module assembly
• Disconnect three Electronic Ignition con­
nectors.
• Remove three Electronic Ignition bracket fixing
bolts, and remove Electronic Ignition assembly
with high tension cables.
10. Throttle body
• Remove four fixing bolts.
11. Vacuum hoses
• Disconnect vacuum hoses on canister VSV and
Exhaust Gas Recirculation VSV
from the
throttle body.
12. Positive Crankcase Ventilation hose
• Disconnect from common chamber.
13. Fuel Pressure Control Valve vacuum hose
• Disconnect from common chamber.
14. Evaporative Emission Canister Purge hose
• Disconnect from common chamber.
15. Exhaust Gas Recirculation assembly
16. Common chamber
• Remove six bolts, two nuts and four bracket
fixing bolts, then remove the
common
chamber.
17. Throttle body
• Disconnect Engine Coolant hose from throttle
body.
• Disconnect Idler Air Control Valve and Throttle
Position Sensor connectors.
ENGINE (V6 3.2L DOHC AND SOHC) 6A1-43
18. Fuelhoses
• Disconnect feed and return fuel hoses from fuel
pipes, and remove two bracket fixing bolts on
the cylinder head cover.
19. Fuel injector connectors
• Disconnect connectors from injectors.
• Disconnect thermo sensor connector.
20. Intake manifold
• Remove two fixing bolts and four nuts.
21. Engine Coolant manifold
• Disconnect heater hose.
• Remove four fixing bolts.
22. Power steering pump drive belt
23. Air Conditioning compressor drive belt
24. Generator drive belt
25. Power steering pump
26.
Fan pulley assembly
27. Crankshaft pulley assembly
~ • Using special tool J-8614-01, hold crankshaft
~ pulley.
•
Remove center bolt, then the pulley.
28. Oil cooler hose
• Remove two cooler hose bracket fixing bolts on
the timing
belt cover.
29. Timing belt cover
30. Pusher
\fl CAUTION:
VI The pusher prevents air from entering the oil
chamber. Its rod must always be facing upward.
31. Timing belt
\fl CAUTIONS:
VI 1) Do not bend or twist the belt, otherwise its
core
could be damaged. The belt should not
be bent at a radius less than 30mm.
2) Do not allow oil or other chemical substances
to come in contact with the belt. They will
shorten the belt life.
3) Do not attempt to pry or stretch the belt with a
screwdriver
or any other tool during
installation.
4) Store timing belt in a cool and dark place.
Never expose the
belt to direct sunlight or
heat.
32. Cylinder head cover
• Remove 11 fixing bolts, then the cylinder head
cover.
33. Power steering pump bracket
• Disconnect ground cable from bracket.
• Remove five fixing bolts, then the bracket.
34. Exhaust front pipe
35.
Level gage guide tube fixing bolt
• Remove from cylinder head.
36. Cylinder head

'.:.:.
6A1-44 ENGINE (V6 3.2L DOHC AND SOHC)
1••1 INSTALLATION
36. Cylinder head
l"i:a\1 • Using special tools, tighten fixing bolts to the
~ specified torque, in sequence shown in
Fig.
6A 1-53.
Extension wrench: J-39252
Extension wrench: J-24239-01
NOTE:
• Do not reuse cylinder head gasket and M11
fixing bolts.
• Do not apply the oil to the bolt.
M8x1.25
1~1 Torque N·m (lb·ft)
M11x1.5
21 (15)
~~~ Torque N·m (lb·ft) 64 (47)
[ill ® ® @ , , , I I I
~
I
I I
I I
I I I
I I
I I I
I I
I

0
' , , ' ' , ' , ' ® '-~ CD @
M8 Bolt QM11Bolt
Fig. 6A1-53
35. Level gage guide tube fixing bolt
34. Exhaust front pipe
' '
, ,
(j)
I
I
I
@
~~~ • Tighten fixing bolt to the specified torque.
Torque
N·m (lb·ft) I 67 (48)
33. Power steering pump bracket
~~~· Tighten fixing bolts to the specified torque.
Torque
N·m (lb·ft) I 46 (34)
32. Cylinder head cover
• Refer to "Cylinder head cover removal and
installation" in this section.
31. Timing belt
• Refer to "Timing belt removal and installation"
in this section.
30. Pusher
• Tighten bolt to the specified torque.
1~1 Torque N·m (lb·ft) I 19 (14)
29. Timing belt cover
• Remove crankshaft pulley that was installed in
step
33.
~~~· Tighten bolts to the specified torque.
Torque
N·m (lb·ft) I 18 (13)
28. Oil cooler hose
~ • Tighten oil cooler hose bracket bolts to the
~ specified torque.
Torque
N·m(lb·ft) I 18(13)
27. Crankshaft pulley assembly
l"i:a\1 • Using special tool J-8614-01, hold the
~ crankshaft pulley.
~~~· Tighten center bolt to the specified torque.
Torque
N·m (lb·ft) I 167 (123)
26. Fan pulley assembly
~~~ • Tighten fixing bolt to the specified torque.
Torque
N·m (lb·ft) I 22 (16)
25. Power steering pump
~ • Tighten pump fixing bolts to the specified
~ torque.
Torque
N-m (lb·ft) 46 (34)
24. Generator drive belt
• Engage and adjust.
• Refer to Section 68 "Drive belt adjustment".
23. Air Conditioning compressor drive belt
• Engage and adjust.
• Refer to Section 68 "Drive belt adjustment".
22. Power steering pump drive belt
• Engage and adjust.
• Refer to Section 68 "Drive belt adjustment".
21. Engine Coolant manifold
~~~· Tighten fixing bolts to the specified torque.
Torque
N·m (lb·ft) J 22 (16)
• Connect heater hose.
20. Intake manifold
~ • Tighten fixing bolts and nuts to the specified
~ torque.
Bolts
Torque N-m (lb·ft) 24 (17)
Nuts
Torque
N-m (lb·ft) 24 (17)
19. Fuel injector connectors
• Connect to each injector.
18. Fuelhoses
• Connect the hoses securely and install the bolts
on the head cover.
17. Throttle body
..

1••1 REMOVAL
Preparation: • Remove engine hood.
• Drain radiator Engine Coolant.
•
Disconnect battery ground cable.
1.
Air cleaner assembly
2. Radiator upper fan shroud
• Remove from radiator.
3. Radiator fan assembly
• Remove four nuts, then the radiator fan
assembly.
4. Accelerator Pedal cable
• Disconnect from throttle body and cable
bracket.
5. Canister vacuum hose
• Disconnect from vacuum pipe.
6.
Vacuum booster hose
• Disconnect from common chamber.
7. Connectors
• Disconnect from Manifold Absolute Pressure,
canister Vacuum Switching Valve (VSV),
Exhaust
Gas Recirculation VSV, Intake Air
Temperature and ground cable.
8. High tension cables
• Disconnect from cylinder head cover.
9. Ignition Control Module assembly
• Disconnect three Electronic Ignition con­
nectors.
• Remove three Electronic Ignition bracket fixing
bolts, and remove Electronic
Ignition assembly
with high tension cables.
10. Throttle body
• Remove four fixing bolts.
11.
Vacuum hoses
• Disconnect vacuum hoses on canister VSV and
Exhaust
Gas Recirculation VSV from the
throttle body.
12.
Positive Crankcase Ventilation hose
• Disconnect from common chamber.
13. Fuel Pressure
Control Valve vacuum hose
• Disconnect from common chamber.
14.
Canister vacuum hose
• Disconnect from common chamber.
15.
Exhaust Gas Recirculation Valve assembly
• Remove five bolts from common chamber,
exhaust manifold and cylinder head cover.
16.
Common chamber duct
• Remove four bolts, four nuts and three bracket
fixing bolts, then remove the
common
chamber.
• Disconnect ground cable from rear side of
common chamber.
ENGINE (V6 3.2L DOHC AND SOHC) 6A1 47
17. Throttle body
• Disconnect Engine Coolant hose from throttle
body.
• Disconnect Idle Air Control Valve and Throttle
Position Sensor connectors.
18.
Common chamber
• Remove six bolts and two nuts.
• Remove fixing bolts on common chamber
bracket, then the
common chamber.
19.
Fuelhoses
• Disconnect feed and return fuel hoses from fuel
pipes, and remove
two bracket fixing bolts on
the cylinder head cover.
20. Fuel injector connectors
• Disconnect connectors from injectors.
• Disconnect thermo sensor connector.
21.
Intake manifold
• Remove two fixing bolts and four nuts.
22. Engine
Coolant manifold
• Disconnect heater hose.
• Remove four fixing bolts.
23.
Power steering pump drive belt
24. Air Conditioning compressor drive belt
25. Generator drive belt
26. Power steering pump
27. Fan pulley assembly
28. Crankshaft pulley assembly
I®J • Using special tool J-8614-01, hold crankshaft
pulley.
•
Remove center bolt, then the pulley.
29. Oil cooler hose
• Remove two cooler hose bracket fixing bolts on
the timing belt cover.
30. Timing belt cover
31. Pusher
CAUTION:
The pusher prevents air from entering the oil
chamber. Its rod must always be facing upward.
32.
Timing belt
w CAUTIONS:
' 1) Do not bend or twist the belt, otherwise its
core could
be damaged. The belt should not
be bent at a radius less than 30mm.
2) Do not allow oil or other chemical substances
to come in contact
with the belt. They will
shorten the belt life.
3) Do not attempt to pry or stretch the belt with a
screwdriver
or any other tool during
installation.
4) Store timing belt in a cool and dark place.
Never expose the belt to direct sunlight
or
heat.

~:· T·, ·.}:
6A1-48 ENGINE (V6 3.2L DOHC AND SOHC)
33. Cylinder head cover
• Remove 11 fixing bolts, then the cylinder head
cover.
34. Power steering pump bracket
• Disconnect ground cable from bracket.
35.
• Remove five fixing bolts, then the bracket.
Exhaust front pipe
36.
37. Level gage fixing bolt
• Remove from cylinder head.
Cylinder head
1••1 INSTALLATION
37. Cylinder head
li0\1 • Using special tools, tighten fixing bolts to the
~ specified torque, in sequence shown in Fig.
6A1-56.
~ Extension wrench: J-39252
t:6.l Extension wrench: J-24239-01
NOTE:
• Do not reuse cylinder head gasket and M11
fixing bolts.
•
Do not apply the oil to the bolt.
M8x1.25
Torque
N·m (lb·ft) 21 (15)
M11x1.5
Torque
N·m (lb·ft) 64 (47)
OJ] ® ® ® , ' ' ,
, I , ,
[IQJ ' I I
I I
I I I
I I
I I I
I I
,
[I] ' , , ' @ ' ,
CD ' , , __
@
[[ M8 Bolt (J M11 Bolt
Fig.
6A1-56
36. Level gage guide tube fixing bolt
35. Exhaust front pipe
'
,
(])
I
I
I
,
@
~~~ • Tighten fixing bolt to the specified torque.
Torque
N·m (lb·ft) I 67 (49)
34. Power steering pump bracket
~~~ • Tighten fixing bolts to the specified torque.
Torque
N·m (lb·ft) I 46 (34)
33.
32.
31.
Cylinder head cover
• Refer to "Cylinder head cover removal and
installation" in this section
Timing belt
• Refer to "Timing belt removal and installation"
in this section.
Pusher
• Tighten bolt to the specified torque.
I~I __ T_o_r~qu_e __ N_·_m~(lb_·ft_)~ ______ 1_9_(1_4_) ____ _
30. Timing belt cover
• Remove crankshaft pulley that was installed in
step 34.
~~~· Tighten bolts to the specified torque.
Torque
N·m (lb·ft) I 18 (13)
29. Oil cooler hose
~ • Tighten oil cooler hose bracket bolts to the
t:6.l specified torque.
Torque
N·m (lb·ft) I 18 (13)
28. Crankshaft pulley assembly
li0\1 • Using special tool J-8614-011 hold the
~ crankshaft pulley.
~~~ • Tighten center bolt to the specified torque.
Torque
N·m (lb·ft) I 167 (123)
27. Fan pulley assembly
~~~· Tighten fixing bolts to the specified torque.
Torque
N·m (lb·ft) I 22 (16)
26. Power steering pump
~ • Tighten pump fixing bolts to the specified
t:6.l torque.
Torque
N·m (lb·ft) I 46 (34)
25. Generator drive belt
• Refer to Section 68 "Drive belt adjustment".
24.
Air Conditioning compressor drive belt
• Refer to Section 68 "Drive belt adjustment".
23. Power steering pump drive belt
• Refer to Section 68 "Drive belt adjustment".
22. Engine Coolant manifold
~~~· Tighten fixing bolts to the specified torque.
Torque
N·m (lb·ft) I 22 (16)
• Connect heater hose.
21.
Intake manifold
~ • Tighten fixing bolts and nuts to the specified
t:6.l torque.
Bolts
Torque N·m (lb·ft) 24 (17)
Nuts
Torque
N·m (lb·ft) 24 (17)
..

'.n
6A1-62 ENGINE (V6 3.2L DOHC AND SOHC)
E) REMOVAL
Preparation: • Disconnect battery ground cable.
• Remove engine hood.
In order to return the hood to the
original position exactly, make
alignment on the hood and hinges
before
removal.
•
Drain radiator coolant.
1. Accelerator cable
• Disconnect from throttle valve and common
chamber.
2. Ventilation hose
3.
Air hose
4. Air cleaner assembly
5. Canister vacuum hose
6. Vacuum booster hose
7. Engine harness connectors
• Disconnect three connectors on canister side.
8. Battery ground cables
• Disconnect two black and white connector
clips
from the power steering pump bracket.
9. Ground cables
• Disconnect two terminals connected to the
battery support and the
front right frame.
1 0. Bonding cable connector
• Disconnect connector on the left side dash
panel.
11. Bonding cable terminal
• Disconnect terminal on the back of left bank.
12. Starter harness connector
• Disconnect from starter.
13. Radiator
• Disconnect upper and lower hoses from the
engine.
• Disconnect coolant reserve tank hose from
radiator.
• Disconnect ATF hose from the pipe. (A/T)
• Remove radiator lower hose clip from the hose
bracket.
• Remove radiator lower fan shroud.
• Remove radiator.
14. Power steering pump drive belt
15. Power steering pump
• Remove two bolts on the bracket, and place the
pump along with piping on the body side.
16. Air Conditioning compressor drive belt
17. Air Conditioning compressor
• Remove fixing bolts and shift aside the
compressor
with piping attached.
18. Heater hoses
• Disconnect two hoses from the engine.
19. ATF pipes
• Disconnect two pipes from right side engine
mount.
20. Transmission assembly
• See "Transmission Removal and Installation"
in Section 7.
21. Left side engine mount
• Support the engine.
• Remove two fixing bolts from engine mount on
chassis side.
22. Right side engine mount
• Remove two fixing bolts from engine mount on
chassis side.
23. Engine assembly
w CAUTION:
When assembling the engine and transmission,
confirm
that dowels have been mounted in the
specified positions at the engine side. Besides,
take care
that dowel positions are different
between the manual transmission and the
automatic transmission.
If assembled in the
condition that dowels have not been mounted in
the specified positions,
it results in the trans­
mission broken.
M/Tdowel position
AIT doweiY~--r..ri~-' position
Fig. 6A1-80a
n t b,
•

68 -10 ENGINE COOLING
DRIVE BELT ADJUSTMENT
Power steering oil pump
Lock bolt
Bolt position
Adjuster
Crank
pulley
Crank; AC. Generator cooling fan
Crank;
Air Conditioning compressor
Crank; Power steering
oil pump
Air Conditioning compressor
Lock bolt Crank pulley
Fig. 68-17
(b!] INSPECTION
Check drive belts for wear or damage, and replace
with new ones as necessary. Check belts for tension,
and
adjust as necessary.
WCAUTION:
• Unlike the conventional V-type belt, auto ten­
sion
belt must use a belt tension gauge, if
possible, for its tension adjustment because
feel based adjustment may not lead to accu­
rate
belt tension.
Tension
readjustment of auto tension belt
should be made only once when V-type HM'
tension has dropped to 40 lb or less and polyV­
type's to 50 lb or less after the vehicle's total
running mileage of 621 miles.
As for air conditioning (A/C) compressor driv­
ing belt, it is difficult to use a belt tension
gauge.
Depress
belt with 98N (221b) and make sure
that slackness is in the range of0.315-0.472 in.
AC. Generator and cooling fan drive belt
Air Conditioning compressor drive belt
Fig. 68-18
Belt tension range to be targeted for cold setting.
Using a
Borrough drive belt tension gauge.
(I b)
Kind of Initial Tension at belt tension readjustment
AC generator & fan Poly V type 180 110 pulley drive belt ±10
±10
A/C compressor Poly V type 120
100
drive belt ±20
±20
Power steering
V-type HM 90 ±20 pump drive belt
•

602 - 2 CRANKING SYSTEM
CRANKING CIRCUIT
STARTING SYSTEM
a: co 00
/ +
Battery
50 A
Kew
Position
LOCK
OFF
Key
Removed
ACC Inserted
ON
START Battery
Ignition Battery
Accessories Ignition Starter B1 IG1 B2 ACC IG2 ST
o----o
o----o
oc l---+----+--<0---o
BOA MAIN KEYSW 3WB I I ~~ ...;~-4:) -
IG COIL --------1~-:r uJ----a~ (+) 15A 15A IG COIL ENGINE
GENERATOR IG co :5: ('f)
RELAY; STARTER
3BW r---~
._,()-.L___j -v CLUTCH START SWITCH(M/T)
0.5
BW-I '~ I -0.5 BW ~-+-4~--~~~------~ T I ~ I T : ___________________ ~
.. (NT)
TO AIR CONDITIONING RELAY
Mode SW (NT)
PULLIN
B C\~L _S -/OLD I~ COl~
fl-~ooe--------O<>Ol -----MAGNETIC SWITCH
~-T ------+-----~.
I M
L _______ _
STARTER
Fig. 602-2
•

6E2-2 DRIVEABILITY AND EMISSIONS
DRIVEABILITV AND EMISSIONS GENERAL INFORMATION
CONTENTS
General Information
Driveability ....................... .
Emissions
........................ .
Maintenance
Schedule .............. .
Introduction ...................... .
Electronic Engine
Control .......... .
What This Section Contains ........ .
Blocking Drive Wheels
Visual/Physical
Underhood Inspection
6E2-3
6E2-3
6E2-3
6E2-3
6E2-3
6E2-3
6E2-3
6E2-3
Basic
Knowledge required . . . . . . . . . . . . 6E2-4
Basic Electric Circuits . . . . . . . . . . . . . .
6E2-4
Use
of Circuit Testing Tools . . . . . . . . . 6E2-4
Use
of Digital Volt-Ohm Meter (DVOM). 6E2-4
Diagnostic
Information . . . . . . . . . . . . . . . 6E2-4
"Check Engine" Malfunction Indicator
Lamp (MIL) . . . . . . . . . . . . . . . . . . . . 6E2-4
Intermittent "Check Engine"
Malfunction Indicator Lamp (MIL) . . 6E2-4
Reading Diagnostic
Trouble Codes . . . 6E2-5
Clearing
Trouble Codes . . . . . . . . . . . . 6E2-5
Diagnostic Test
Mode .............. 6E2-5
Engine Control
Module Learning
Ability . . . . . . . . . . . . . . . . . . . . . . . . 6E2-6
Field
Service Mode . . . . . . . . . . . . . . . . 6E2-6
Standard Nomenclature
for Certain
Electrical/Electronic
Components
and Systems . . . . . . . . . . . . . . . . . . . 6E2-6
Abbreviations and Glossary of Terms ..... 6E2-11
Driveability and Emissions
Section Summary ................... 6E2-12
Section .,. A"
Diagnostic Procedure Summary ...... 6E2-13
Data Link Connector
"SCAN Tools" ..... 6E2-14
Data
List (FO) ...................... 6E2-14
"SCAN Tool" Limitations and Use ...... 6E2-14
Intermittent Conditions ............ 6E2-14
"SCAN Tool" Positions ............... 6E2-14
Injector Pulse Width ............... 6E2-14
Closed Loop/Open Loop . . . . . . . . . . . .
6E2-14
Trouble Codes ................... 6E2-14
Throttle Position (TP) Sensor . . . . . . . . 6E2-14
Throttle Angle . . . . . . . . . . . . . . . . . . . 6E2-15 Heated
Oxygen
Sensor (H02S)
Vehicle Speed Sensor (VSS) ....... .
Programmable Read Only Memory ID .
Revolution
Per Minute (RPM) ...... .
Mile Per Hour (MPH) ............. .
Engine
Coolant Temperature (ECT) .. .
Intake Air Temperature (IAT)
Sensor
...................... .
Manifold Absolute Pressure (MAP) .. .
Barometric Pressure (BARO) ....... .
Exhaust Gas Recirculation
(EGR)
(ON/OFF) .................... .
Short Term (S.T.) Fuel Trim and
Long Term
(LT.) Fuel Trim ...... .
Long Term
(LT.) Fuel Trim ........ .
Idle Air Control (lAC) Counts ....... .
Desired Revolution
Per Minute ..... .
Air Conditioning (A/C) Request ..... .
Air Conditioning (A/C) Clutch ...... .
Power Steering Pressure (PSP)
Switch ...................... .
Battery Positive Voltage .......... .
Spark Advance .................. .
Start Up Engine Coolant .......... .
Engine
Speed (RPM) ............. .
Fuel Trim Enable ................ .
Air/Fuel Ratio .................. .
Induction Air Control ............. .
Section B -Driveability Symptoms ... .
Section C -Component Systems .... .
Engine
Control Module (ECM)
and
Sensors .................. .
Fuel Control System ............. .
Electric
Fuel Pump (in-tank) ....... .
Evaporative Emission
(EVAP)
Control System ................ .
Ignition Control (IC) .............. .
Exhaust Gas Recirculator
(EGR) .... .
Air Conditioning (A/C) Clutch Control .
Positive Crankcase Ventilation (PCV) .
Tools Needed
to Service the System .... .
General Specifications
............... .
Vacuum Hose Routing Diagram
........ .
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-15
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-16
6E2-17
6E2-17
6E2-17
6E2-17
6E2-17
6E2-17
6E2-17
6E2-17
6E2-18
6E2-21
6E2-22
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