Mazda MX-6 1998, Workshop Manual, Page: 543 / 1282

CONTROL SYSTEM [KL]
Term inal S ignal
C on n ectio n Test c o n d itio n Voltage (V) P o ssib le m a lfu n c tio n
70
Fuel pump control
(Immobilizer)
Fuel pump relay
Ignition switch ON B+
• Fuel pump relay
• Related harness
Cranking Below 1.0
Idle Below 1.0
71 Power supply Main relay
Ignition switch OFF Below 1.0
• Main relay
• Related harness
Ignition switch ON B+
72
EGR control
EGR valve (Coil
#2)
Ignition switch ON B+
• EGR valve
• Related harness
Idle Below 1.0
73
Fuel injector
control #5
Fuel injector No.5
Ignition switch ON B+
• Fuel injector No.5
• Related harness
Idle B+
74
Fuel injector
control #3
Fuel injector No.3
Ignition switch ON
B+
• Fuel injector No.3
• Related harness
Idle
B+
75
Fuel injector
control #1
Fuel injector No.1
Ignition switch ON
B+
• Fuel injector N o.1
• Related harness
Idle
B+
76 Ground Ground
Constant
Below 1.0 • Related harness
77 Ground
Ground Constant
Below 1.0
• Related harness
78
Ignition
Ignition coil (#3,
#6)
Ignition switch ON B+
• Ignition coil
• Related harness
Idle B+
79
O/D OFF indicator
light (ATX)
O/D OFF indicator
light
Except O/D OFF mode
B+
• O/D OFF indicator
light
• Related harness
O/D OFF mode Below 1.0
80
Fuel pump control
(Without
immobilizer)
Fuel pump relay
Ignition switch ON
B+
• Fuel pump relay
• Related harness
Cranking
Below 1.0
Idle
Below 1.0
81
Pressure control
solenoid (ATX)
Pressure control
solenoid
Idle
Closed throttle
position
Approx. 7
• Pressure control
solenoid
• Related harness
Wide open
throttle Approx.
1.6
82
Torque reduction
(Engine condition)
ABS/TCS CM
Ignition switch ON Below 1.0
• ABS/TCS control
module
• Related harness
Idle
Approx.
4.0
83
Idle air control IAC valve
Ignition switch ON B+
• IAC valve
• Related harness
Idle
After warm up
(No load)
Approx. 11
84
Input/turbine speed
(ATX) Input/turbine speed
sensor
Ignition switch ON (AC range) Below 1.0
• Input/turbine speed
sensor
• Related harness
Engine running at P position (AC
range)
Below 1.0
85
Cylinder
identification (+)
Cylinder
identification
sensor
Ignition switch ON
Below 1.0
• Cylinder
identification
sensor
• Related harness
Idle
Below 1.0
86
— —
— —
87
Heated oxygen
sensor (Front LH)
nested oxygen
sensor (Front LH)
Ignition switch ON
Below 1.0
• Heated oxygen
sensor (Front LH)
• Related harness
Idle
Engine cold Below 0.5
After warm up
0.1— 0.9
Acceleration
0.5— 1.0
Deceleration
0— 0.5
88 Mass air flow
Mass air flow
sensor
Ignition switch ON
Below 1.0
• Mass air flow
sensor
• Related harness Idle 0
1
r
o o
89 Throttle position
Throttle position
sensor
Ignition switch
ON
Closed throttle
position
o
T
C
O
Ö
• Throttle position
sensor
• Related harness
Wide open
throttle
2.8—4.5
0 1 -4 0 B -8