Code Number - Mazda 626 MX-6 Workshop Manual

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