4 B
TROUBLESHOOTING WITH SST
CODE NUMBER
Malfunction display
Malfunction
MIL output signal
code no.
pattern
I I i
01
° fN f
£ J L J J I L
02
0 " J U U 1
03
J J I O
04
0 ° P
05
T
J
o
f
08
0 ° F N F J
09
°
J
o
f nf
10
Q P P _fUlll_[Uil_
12
n il n i
14
o°fnf
15
J
J
o p p
niiii n
16
o p p
o ° p N p_JU i « n
17
4B—14
Sensor or
subsystem
Ignition pulse
Ne signal
Gi signal
G
signal
2
Knock sensor and
knock control unit
I U
I L
Air flow meter
f f l ^
M
Water thermo sensor
■
1
Intake air thermo
sensor (air flow,
meter)
Throttle sensor
Atmospheric pres
sure sensor
Oxygen sensor
fU
I
EGR position sensor
Feedback system
626, MX-6 Revised 10/87
Self-diagnosis
No ignition signal
No Ne signal from
crank angle sensor
♦
No Gi signal
No G
signal
2
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Sensor output con
tinues less than
0.55V 120 sec. after
engine starts (1,500
rpm)
Open or short circuit
Sensor output does
not match target val
ue (incorrect output)
Sensor output not
changed 20 sec. af
ter engine exceeds
1,500 rpm
Fail-safe
'
Neither Gi nor G
2
signal:
Engine stopped
• Retards ignition
timing 6° in
heavy-load con
dition
• Waste gate
opens earlier
Maintains basic sig
nal at preset value
Maintains constant
command
• 35°C (95°F) for
EGI
• 50°C (122°F) for
ISC control use
Maintains constant
20°C (68°F)
command
Maintains constant
command of throttle
valve fully open
Maintains constant
command of sea
level pressure
Cancels EGI feed
back operation
Cuts off EGR
Cancels EGI feed
back operation
86U04B-005