1990 MAZDA 232 engine coolant

TURSUCHARGER CONTROL SYSTEM F2
Removal I InstaIlation
Caution
l Be carefui of following points after turbocharger removal.
l Do not carry the turbocharger by the actuator rod or actuator hose.
l Do not drop the turbocharger.
l Set the turbocharger down with the turbine shaft horizontal.
9 Cover the intake, exhaust, and oil passages to prevent dirt or other materia1 from entering.
l Use the specified new studs when installing the turbocharger.
1. Disconnect the negative battery cable.
2. Lift up the vehicle.
3.
Remove the undercover.
4. Drain
the engine coolant.
5. Remove in
the order shown in the figure.
6. fnstall in the reverse order of removat, referring to Installation Note.
7.8-l 1 N-m (80-l 10 cm-kg, 69-95 in-lb)
G I’
/
43-61 (4.4-6.2, 3245)
36-42 (3.94.3, 28-
7.8-1 1 N-m (80-110 cm-kg, 6
cm-kg, 69-95
indb)
26-31
12.7~g-2. 20-231
w
19-26 (l-9-2.6, 14-19)
7.6-17 N-m (80-7 t d cm-kg, 69-95 in-lb)
N-m (m-kg, Mb]
I 93GOF2-762
F2-47

F2 CONTROLSYSTEM
erminat Input ’ Output Connected to Test condition Correct voltage Remark
1N 0 I Throttle sensor Accelerator pedal released &low l.OV j Ignition switch
(Idle switch)
Accelerator pedal depressed Approx. 12V *N
IO I 0 j [ Stoplight switch Brake pedal released Betow 1 .OV -
1P j 0 1 i P/S pressure lgnitlon switch ON Approx. 12V
I
switch
f/S ON at idle Below 1 .UV
I
P/S OFF at idle Approx. 12V -
I
to 0 A/C switch A/C switch ON
NC switch OFF Beiow 2.W ignition switch
ON and blower
Approx* t2V motor ON
i
1R 0 Electric fan switch Fan operating (Engine coolant tempera- Betow l.OV
ture over 91 *C (t96*F) or diagnosis con-
-
nector terminal TFA grounded)
Fan not operating (Idle) Approx.. f 2V
IS 0 Blower control Blower controf switch OFF or 1st position Approx. 13 Ignition switch
switch
Blower control switch 2nd or higher po- Below 7 .OV ON
sition
IT
Cl Rear window
defroster switch Rear window defroster switch OFF
Rear window defroster switch ON Below 1 .OV Ignition switch
Approx. 12V ON
1u 3 Headlight switch Headlights ON Approx. 12V
-
Headlights OFF Below 1 .OV
-Iv Cl ’ Neutral/Clutch
Neutral position or clutch pedal Below I .OV
switches
depressed
Others Approx. 12V
l-7 I r
f
2V 2W 2U 25 20 20 2M 2K 21 2G IZE 2C 2A IU IS 10 10 IM 1K 11 1G rE tC IA
22 2X (2V 2T 2R 2P 2N 2L 2J 2H’ZF 20 2B fV 1T 1R IP IN 1L 7J III If ItI 1B l F2-62

F2 CUNTRULSYSTEM
‘erminal Input Output i Connected to Test condition Correct voltage Remark
2A - - ’ Ground {Injector)
Constant OV -
2B - - I Ground (Output)
Constant OV -
2c , - - 1 Ground (CPU)
Constant OV - 20
-i- Ground (Input) Constant
OV -
2E ’ 0 1 Distributor I
Ignition switch ON Approx. OV
(Ne-signal)
or 5v -
Idle Approx. 2V
2F -j- - - - -
2G 0
Distributor ignition switch ON Approx. OV
(G-stgnal) or 5V
Idle Approx. I.3
2t-I - - -
- - -
21 - - - - - -
2J C
Knock control unit
Idle Approx. 4. OV -
2K 0
Thronle sensor/ Constant . 4.5--5.W
Airflow meter
-
2L
- -
- - - -
I
2M 0 Throttle sensor
Accelerator pedal released Approx. 0.W
-
Accelerator pedal fully depressed Approx. 4.W
2N 0
20 0
2P 0
1
2Q ! 0
2R Oxygen sensor
Airflow meter
Intake air
thermosensor
Water
thermosensor 0
’ Turbocharge
indicator Ignition switch ON
f OV
Idle (Cold engine) ov
Idle (After warm-up) O-l .ov -
Increasing engine speed [After warm-up) 0.5-I .ov
Deceleration o-0.4v
ignition switch ON
’ Idle Approx. 3.8V
-
Approx. 3.OV
Ambient air temperature 20°C (68OF) Approx. 2SV In airflow meter
Engine coolant temperature 20°C (68OF) Approx. 2.5V
-
After warm-up
Below 03
Ignition switch ON
Approx. f2V
-
F2-64

F2 CONTROLSYSTEM
Terminal I Input Output Connected to Test condition Correct voltage Remark
25 0
Overboost warning lgnltion switch ON Approx. 12V
-
buzzer
2T 0 1 Solenoid valve 180 seconds atter engine started when Below 1 SV
(Pressure regulator) engine coolant temperature above 90%
(I 94OF) and Intake air temperature above -
58OC (13WF)
1 Other condition at Idle Approx. 12V
2u 0 Injector (Nos. I 1 3) Ignrtion switch ON Approx. 12V * Engine Signal
Idle Approx. 12V’ Monitor: Green
and red lamps
Engrne speed above 2,000 rpm on de- Approx. f2V
flash
celeratlon (Atter warm-up)
2v 0 Injector (Nos. 2, 4) lgnitlon swrtch ON Approx. 12V
Idle Approx. 12V’
Engine speed above 2,000 rpm on de- Approx. 12V
ceieration (After warm-up)
2W 0
ISC valve Ignition switch ON Approx. 7V
-
Idle Approx. 9V
2x 0 Solenoid valve Ignition switch ON Approx. 12V
(Purge control)
t Idle -
Approx. f2V
t
2Y 0 Cmxit opening Ignition switch UN Approx. 12V
-
relay
Idle Below 1 .OV
22 - - - - - -
-L J
u-
v I U-1 l-
2y 2w 2u 2s 20 20 2M 2K 21 2G 2E 2C
2A 1U 1S IQ 10 1M 1K 11 1G 1E IC 1A
22 2X 2V 2T 2R 2P 2N 2L 2.J i’t-( 2F 2D 2B 1V 1T 1R tP IN IL I..! ItI IF
tD 18
F2-66