Mazda MX-6 1998, Workshop Manual

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CONTROL SYSTEM [FS]
T erm inal
S ignal Connect to Test condition Voltage (V) Possible malfunction
46
EGR valve #3 coil
control
EGR valve
Ignition switch ON
B+
• EGR valve
• Related harness
Idle
47 — — — — —
48 Engine speed
Instrument cluster
Ignition switch ON B+
• Instrument cluster
• Related harness
Idle
Approx.
6.5
49 Headlight Headlight switch
Headlight switch ON B+
• Headlight switch
• Related harness
Headlight switch OFF Below 1.0
50
— — — — —
51 Ground
Ground Constant
Below 1.0
• PCM 51 terminal
harness (Open)
52 IGT2 Ignition coil
Ignition switch ON
B+
• Ignition coil
• Related harness
Idle
53 — — — — —
54
Torque converter
clutch control
(ATX)
Solenoid body
Torque converter clutch operation Below 1.0
• Solenoid body
• Related harness
Torque converter clutch
non-operation
B+
55
Back-up power
supply
Battery Constant B+
• PCM 55
terminal— Battery
harness connector
56
EGR valve #4 coil
control
EGR valve
Ignition switch ON B+
• EGR valve
• Related harness
Idle Below 1.0
57 Knocking
Knock sensor
Ignition switch ON
Approx.
3.5
• Knock sensor
• Related harness
Idle
58 Vehicle speed
Vehicle speed
Idle (AC range)
Approx.
0.1
• Vehicle speed
sensor
• Related harness
48 km/h {30 mph} (AC range)
Approx.
8.0
88 km/h {55 mph) (AC range)
Approx.
12.7
59
— — — — —
60
Heated oxygen
sensor (Front)
Heated oxygen
sensor (Front)
Ignition switch ON Below 1.0
• Heated oxygen
sensor (Front)
• Related harness
Idle
Engine cold Below 5.0
After warm up
0.1— 0.9
Acceleration
o
7
L
O
d
Deceleration 0— 0.5
61
—
— — — —
62
Fuc: tank pressure
Fuel tank pressure
sensor
Ignition switch
ON
Fuel tank
pressure 0 kPa
{0 mmHg, 0
inHg)
(Barometric
pressure)
Approx.
2.5
• Fuel tank pressure
sensor
• Related harness
63
Fuel tank level
Fuel gauge sender
unit
Full fuel
Approx. 6
• Fuel level sender
unit
• Related harness
Low fuel Approx. 0
0 1 -4 0 A -6