1990 MAZDA 232 torque

B2 INSTALLATION
Step 5
1. Connect the harness connectors shown in the figure.
ALTERNATOR OIL PF;IESSURE SWITCH PRESSURE REGULATOR
STARTER CONTROL VAVLE
GRoYD O-i-l-tE SENSOR
IDLE-SPEED CONTROL
KNOCK SENSOR
OXYGEhENSO$
Step 6
Torque Specifications
03UO8X-33’
7.8-11 N-m
(80-110 cm-kg, 69- .
11 N-m (80--f ’IO cm-kg, 69-95 in-lb)
N-m
cm-kg, 69-95 in-Ib)
37-52 (3.8-5.3, 27
7.8--fl N-m (80 107 (9.6-T 1.9, 69-79)
N-m (m-kg, ft-lb)
03U03X-83

lNSTAL&ATlON B2
03UOSX-839
93G032-76:
9313082-738
/
\ I
Crossmember
1. Install the crossmember.
Tightening torque:
93-107 Nm (9.5-l I .9 m-kg, 69-79 f&lb)
A/c compressor
1. Install the A/C compressor.
Tightening torque:
24-35 Nom (2.4-3.6 m-kg, 17-26 ft-lb)
P/S oil pump and bracket
I. Install the P/S oil pump and bracket.
Tightening torque:
37-52 Nm (3.8-5.3 m-kg, 27-38 ft-lb)
Drive belt
I. Install the P/S and/or A/C drive belt.
2. Adjust the drive belt deflections. (Refer to page 82-2)
Air pipe
1. Install a new gasket and install the air pipe.
Tightening torque:
19-25 N-m (1.9-2.6 m-kg, 14-19 Mb)
Intercooler and air pipe assembty
t . Lift the intercooler and air pipe assembly from the bottom
of the vehicle, and install hose @ in pipe @ .
2. Install and tighten the mounting bolt and nut.
Tightening torque:
7.8-l 1 Nom (80-l 10 cm-kg, 69-95 in-lb)
3. Tighten hose clamp 0.
B2-31

B2 INSTALLATION
93GOB2-74 1
93GOB2-743
82-32
4. Connect the air pipe to the throttle body, and tighten the
hose clamp.
5. Connect air hose @ to the wastegate diaphragm,
and se-
curely tighten the hose clamp.
6. Install nut @
Tightening torque:
19-25 Narn (1.9-2.6 m-kg, 14-19 ft-lb)
7. Install the intercooter bracket and tighten nuts @J .
Tightening torque:
7.8-l 1 Narn (80-I IO cm-kg, 69-95 in-lb)
Air pipe and air bypass valve assembly
1. Connect the air pipe to the turbocharger, and securely tight-
en the hose clamp.
2. Install and tighten the bolt @ .
Tightening torque:
7.8-l 1 Nom (80-I 10 cm-kg, 69-95 in-ib)
3. Connect air hose @and Q1 and securely tighten the hose
clamps.
Battery duct
1. install the battery duct.
Radiator and tooting fan assembly
1. Install the radiator and cooling fan assembly.
Tightening torque:
7.8-l 1 Nm (80-l 10 cm-kg, 69-95 Mb)
2. Connect the tooting fan connector.
3. Connect the radiator switch connector.
4. Connect the oil cooler hose.
5. Connect the coolant reservoir hose.
6. Connect the upper and lower radiator hoses.

INSTALLATION
93G082-7ti
HERE
/+Ju 7
93GOB2-74!
Caution
l Position the hose clamp in the original location on
the hose, and squeeze it lightly with large pliers to
ensure a good fit.
Accelerator cable
1. Install the accelerator
cable.
Tightening torque
@): 7.8-l 1 N4m (80-l 10 cm-kg, 69-95 in-lb)
2. Adjust the cable deflection by turning nuts @ .
Deflection: I-3mm (U&4--0.12 in)
Battery carrier and battery
1 . Install the battery carrier.
Tightening torque:
7.8-l 1 N4m (80-I IO cm-kg, 69-95 in-lb)
2. Install the battery and the battery cover.
3. Install the battery bracket.
Tightening torque:
2.9-5.9 N.m (30-60 cm-kg, 26-52 in-lb)
4. Connect the positive battery cable.
Air cleaner assembly
1. Install the air cleaner assembly.
Tightening torque:
19-25 N-m (1.9-2.6 m-kg, 14-19 ft-lb)
2. Connect the airflow sensor connector.
3. Connect the hoses shown in the figure.
Strut tower bar
I. Instail the strut tower bar.
Tightening torque:
88-108 Narn (9.0-11 .U m-kg, 65-80 ft-lb)
Undercover and side cover
1. Install the undercovers and side covers.
93GOB2-746
82-33

E RADIATOR THERMUSWlTCki
RADIATOR THERMOSWITCH (BP DUHC TURBO)
REMOVAL I INSPECTION I INSTALLATION
I. Disconnect the negative battery cable.
2. Remove in the order shown in the figure.
3. Install in the reverse order of removal, referring to InstaHation Note.
7.8-13 H-m
(80-l 10 cm-kg, 69-95 h-lb)
(80-110 cm-kg,
69-95In4b)
REPLACE 1. Resonance chamber
2. Radiator cowling mounting bolts
3. Radiator thermoswitch connector
03WEX-027 4. Radiator thermoswitch
Inspection . . . . . . . . * . . . . . . . . . . . . . ..-. -.*,.a..- . . . . . . .I. below
Installation Note _.,............................._. below
1NSPECTlON 1. Place the switch and a thermometer in engine oil.
Warning
l Do not heat the engine oil above 12O*C (248OF) 2. Heat the engine oil gradually and check continuity of the
switch with
an ohmmeter.
Engine oil temperature “C (*F) Continuity
More than 105 (221) Yes I
t Less than 96 (205) No
1
3. If not as specified, replace the radiator thermoswitch.
Installation Note
Radiator thermoswitch
Caution
l Do not use an impact wrench for installation. 1. Install the radiator thermoswitch along with a new gasket.
Tightening torque: 5.9-12
Nom (60-120 cm-kg, 52-104 in-lb) 93GOEX.721 E-12

F2 TURBOCHARGER CONTROL [BP TURBO]
TURBOCHARGER CONTROL [BP TURBO]
OUTLINE
l The air-to-air intercooler is adopted to lower intake air temperature and to improve engine performance.
l With addition of the wastegate control system, engine torque at higher rpm is increased.
AIR BYPASS VALVE
WASTEGATE
SOLENOID VALVE
TURBOCHAR
ACTUATOR
-
SYSTEM DIAGRAM
AIR BYPASS VALVE 1
t
!NTERCOOLER
n Ii Y7rzFes-~ m I
-
TUREiOCHARGER
WASTEGATE SOLENO1D VALVE
93GOF2-7 7
FZ-12

TURBOCHARGER CONTROL [BP TURBO] F2
WASTEGATE CONTROL
The engine control unit controls the wastegate solenoid valve to give higher boost to the engine in the higher
rpm range, increasing engine torque
and power.
System
Diagram
I
t
1 ECU
i i
AIRFLOW METER ACTUATOR
WASTEGATE
WASTEGATE
SOLENOID VALVE
r ACTUATOR
WASTEGATE SOLENOID VALVE
: OFF (VALVE CLOSED)
ACTUATOR
BOOST
PRESSURE
WASTEGATE SULENOlD VALVE
: ON (VALVE OPEN) Operation
Engine speed below 5,300 rpm
The
wastegate solenoid valve is OFF. Boost pressure is ap-
plied directly to the actuator and the wastegate opens when
the boost pressure exceeds 49 kPa (0.5 kg/cm , 7.1
psi).
Engine speed above 5,300 rpm
The wastegate
solenoid valve is UN. Some boost pressure is
bypassed to the intake manifold, limiting the opening of the
wastegate to increase boost pressure and
improve engine per-
formance.
F2-13

F2 lNTAKE AlR SYSTEM
I. Air cleaner
2. Air cleaner element
Inspect fur dirt, damage, or oil
3. Airflow meter
4. Air hose
5. Air pipe and air hose
6. Accelerator cable 7. Throttle body
8. ISC valve
9. Air valve
IO. Dynamic chamber
I 1. Intake manifold
Installation Note . . . . . . . . ..__..........._._..._._.. below
93GOF2-751
93GOF2-75:
F2-44
installation Note
Intake manifold 1. Tighten the bolts in steps in the order shown in the figure.
Tightening torque:
19-25 Nm (1.9-2.6 m-kg, 140-f9 ft-lb)