NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual

NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual 300ZX 1984 Z31 NISSAN NISSAN https://www.carmanualsonline.info/img/5/569/w960_569-0.png NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual
Trending: wiring diagram, oil capacity, engine oil, code 41, wiring, sensor, cooling

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual SELF-DIAGNOSIS 
Decoding Chart (Contd) 
AK condnioner svstem I 16 malfunctioning 
Code No 31  ~~ 
A ~ Green , ?/=%$== =- ~~ 0 Red 
000 0 
SEF665B 
Starter rlgnal IS malfunctioning 
Code 
No  32 
I2 S

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual SELF-DIAGNOSIS 
Decoding Chart (Contd) 
Code No. 44  ~ 
m-w - 
Red Green 
., 
0 
SEF669B 
EF 81 EC-42

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM INSPECTION 
Check harness  between crank  angle sensor  and 
control  unit 
PREPARATION 
Before checking  the following  items, ensure  that each  connector IS securely  conn

Page 44 of 79

NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM INSPECTION 
VG - 
@Air flow meter (Code No 12) 
Check harness  for continuity 
Disconnect  16pin connector  and connect  terminal 
@to  ground  with 
a jumper  wire 
NG - 
Tu

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM INSPECTION 
+I Replace control unit 
t +I Replace  air flow  meter 
Blow  air through  air flor  meter  and  measure  voltage 
between  terminals 
B and D 
Blo 
I 
I SEF6730

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM  INSPECTION 
@ Cylinder head temperature  sensor (Code No 13) 
Disconnect  16-pin connector  and  measure  the 
resistance  between terminals  @and 
@$ 
Dip the sensor  into

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM INSPECTION 
:@ Vehicle speed sensor (Code No. 14) 
Disconnect speedometer  cable from transmission 
I 
SEF678B 
I 
Disconnect  16-pin connector  from E C C S control 
unit  a

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC CONTROL SYSTEM  INSPECTION 
Tester 
Ohmmeter 
@ ignition signal (Code No 21) 
Leads Ins ~ Should read I+) I-) 
E& 
CZ 3 Continuity exists 
e@ 
A 
SEF682E 
Disconnect 20-pin connector  and

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC  CONTROL  SYSTEM INSPECTION 
OK -+ 
@ Fuel pump (Code No. 22) 
Replace E C C S control unit 
Turn ignition  switch "ON" and listen  to the fuel 
pump  operating  sound  The sound  must be h

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NISSAN 300ZX 1984 Z31 Engine Fuel And Emission Control System Service Manual ELECTRONIC  CONTROL SYSTEM INSPECTION 
@ Throttle valve switch (Code No. 23) 
Check harness  for continuity 
OK 1 
Check the throttle valve switch for continuity 
between 
@ and @ 
Continuitv should e
Trending: wheel, charging, oil capacity, fuel pump, catalytic converter, check oil, ignition