Mazda Protege 5. Manual - part 177

CONTROL SYSTEM [FS]

01–40B–17

01–40B

52

IGT2

Ignition coil (No. 2, 
3 cylinders)

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect ignition coil
(See 01–18–2 
IGNITION COIL 
INSPECTION)

•

Inspect related 
harness

53

Generator field coil 
control

Generator 
(terminal D)

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect generator
(See 01–17–3 
GENERATOR 
INSPECTION)

•

Inspect related 
harness

54

IAC (+)

IAC valve

Ignition switch ON

B+

•

Inspect IAC valve
(See 01–13B–8 IDLE 
AIR CONTROL (IAC) 
VALVE INSPECTION 
[FS])

•

Inspect related 
harness

Idle (After warm up and E/L off)

B+

55

Back-up power 
supply

Battery (positive 
terminal)

Under any condition

B+

•

Inspect battery
(See 01–17–1 
BATTERY 
INSPECTION)

•

Inspect EGI fuse

•

Inspect related 
harness

56

EGR valve #4 coil 
control

EGR valve 
(terminal F)

Ignition switch ON

Below 1.0

•

Inspect EGR valve
(See 01–16–15 EGR 
VALVE 
INSPECTION)

•

Inspect related 
harness

Idle

Below 1.0

57

Knocking

Knock sensor (+)

Ignition switch ON (Use digital 
type voltmeter, because 
measurement voltage will be 
detected less than true voltage 
when using analog type 
voltmeter)

Below 1.0

•

Inspect knock sensor
(See 01–40B–36 
KNOCK SENSOR 
INSPECTION [FS]

•

Inspect related 
harness

58

Vehicle speed

Speedometer 
(MTX)

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect VSS
(See 09–22–4 
Speedometer)

•

Inspect related 
harness

VSS (ATX)

•

Inspect VSS
(See 05–17–27 
VEHICLE 
SPEEDOMETER 
SENSOR (VSS) 
INSPECTION [ATX])

•

Inspect related 
harness

59

Knocking

Knock sensor (-)

Ignition switch ON (Use digital 
type voltmeter, because 
measurement voltage will be 
detected less than true voltage 
when using analog type 
voltmeter)

Below 1.0

•

Inspect knock sensor
(See 01–40B–36 
KNOCK SENSOR 
INSPECTION [FS]

•

Inspect related 
harness

60

HO2S (Front)

HO2S (Front)

Ignition switch ON

0—1.0

•

Inspect HO2S (Front)
(See 01–40B–37 
HO2S (Front and 
Rear) Voltage 
Inspection)

•

Inspect related 
harness

Idle

After warm up

0—1.0

Acceleration

0.5—1.0

Deceleration

0—0.5

61

—

—

—

—

—

Terminal

Signal

Connected to

Test condition

Voltage 

(V)

Action

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CONTROL SYSTEM [FS]

01–40B–18

62

Fuel tank pressure

Fuel tank pressure 
sensor

Ignition switch 
ON

Fuel tank 
pressure 0 kPa 
{0 mmHg, 
0 inHg}

Approx. 

2.5

•

Inspect fuel tank 
pressure sensor
(See 01–40B–40 
FUEL TANK 
PRESSURE 
SENSOR 
INSPECTION [FS])

•

Inspect related 
harness

Fuel tank 
pressure 1 kPa 
{7.5 mmHg, 
0.3 inHg}

Approx. 

2.8

63

Fuel tank level

Fuel gauge 
sender unit

Full fuel

0.2—0.5

•

Inspect fuel gauge 
sender unit
(See 09–22–4 Fuel 
Gauge)

•

Inspect related 
harness

Half fuel

2.0—2.8

Empty fuel

3.4—4.4

64

Neutral position 
(MTX)

Neutral switch

Shift lever is at neutral position

Below 1.0

•

Inspect neutral switch
(See 01–40B–43 
NEUTRAL SWITCH 
INSPECTION [FS])

•

Inspect related 
harness

Shift lever is not at neutral 
position

B+

Load/no load signal 
(ATX)

TR switch 
(terminal H)

Ignition switch 
ON

Selector lever is 
at P or N 
position

Below 1.0

•

Inspect TR switch
(See 05–17–20 
TRANSAXLE RANGE 
(TR) SWITCH 
INSPECTION)

•

Inspect related 
harness

Others

B+

65

—

—

—

—

—

66

—

—

—

—

—

67

Purge control

Purge solenoid 
valve

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect purge 
solenoid valve
(See 01–16–12 
PURGE SOLENOID 
VALVE 
INSPECTION)

•

Inspect related 
harness

68

EGR valve #1 coil 
control

EGR valve 
(terminal E)

Ignition switch ON

Below 1.0

•

Inspect EGR valve
(See 01–16–15 EGR 
VALVE 
INSPECTION)

•

Inspect related 
harness

Idle

Below 1.0

69

—

—

—

—

—

70

—

—

—

—

—

71

Power supply

Main relay

Ignition switch ON

B+

•

Inspect main relay
(See 09–21–5 RELAY 
INSPECTION)

•

Inspect EGI fuse

•

Inspect related 
harness

Ignition switch OFF

Below 1.0

72

EGR valve #2 coil 
control

EGR valve 
(terminal A)

Ignition switch ON

B+

•

Inspect EGR valve
(See 01–16–15 EGR 
VALVE 
INSPECTION)

•

Inspect related 
harness

Idle

B+

73

VTCS control

VTCS solenoid 
valve

ECT above 67.5 

°

C {154 

°

F} 

while idling

B+

•

Inspect VTCS 
solenoid valve
(See 01–13B–15 
VARIABLE TUMBLE 
CONTROL SYSTEM 
(VTCS) SOLENOID 
VALVE INSPECTION 
[FS])

•

Inspect related 
harness

ECT below 67.5 

°

C {154 

°

F} and 

engine speed below 3,250 rpm

Below 1.0

Terminal

Signal

Connected to

Test condition

Voltage 

(V)

Action

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CONTROL SYSTEM [FS]

01–40B–19

01–40B

74

Fuel injection (#3)

Fuel injector No.3

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect fuel injector 
No.3
(See 01–14–24 FUEL 
INJECTOR 
INSPECTION)

•

Inspect related 
harness

75

Fuel injection (#1)

Fuel injector No.1

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect fuel injector 
No.1
(See 01–14–24 FUEL 
INJECTOR 
INSPECTION)

•

Inspect related 
harness

76

GND

GND

Under any condition

Below 1.0

•

Inspect related 
harness

77

GND

GND

Under any condition

Below 1.0

•

Inspect related 
harness

78

—

—

—

—

—

79

K-LINE (serial 
communication)

DLC terminal KLN

Because this terminal is for serial 
communication, good/no good judgment by 
terminal voltage is not possible.

•

Inspect related 
harness

80

Fuel pump control

Fuel pump relay

Ignition switch ON

B+

•

Inspect fuel pump 
relay
(See 09–21–5 RELAY 
INSPECTION)

•

Inspect related 
harness

Cranking

Below 1.0

Idle

Below 1.0

81*

1

Pressure control 
solenoid control (–)

Pressure control 
solenoid

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect pressure 
control solenoid
(See 05–17–28 
SOLENOID VALVES 
INSPECTION)

•

Inspect related 
harness

82*

1

Shift solenoid A 
control

Shift solenoid A

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect shift solenoid 
A
(See 05–17–28 
SOLENOID VALVES 
INSPECTION)

•

Inspect related 
harness

83

IAC (-)

IAC valve

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect IAC valve
(See 01–13B–8 IDLE 
AIR CONTROL (IAC) 
VALVE INSPECTION 
[FS])

•

Inspect related 
harness

84*

1

Input/turbine speed 
(+)

Input/turbine 
speed sensor

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect input/turbine 
speed sensor
(See 05–17–26 
INPUT/TURBINE 
SPEED SENSOR 
INSPECTION)

•

Inspect related 
harness

85

SGC(+)

CMP sensor

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect CMP sensor
(See 01–40B–35 
CAMSHAFT 
POSITION (CMP) 
SENSOR 
INSPECTION [FS])

•

Inspect related 
harness

Terminal

Signal

Connected to

Test condition

Voltage 

(V)

Action

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CONTROL SYSTEM [FS]

01–40B–20

86

SGC(-)

CMP sensor

•

Inspect using the wave profile.
(See 01–40B–22 Inspection Using An 
Oscilloscope (Reference))

•

Inspect CMP sensor
(See 01–40B–35 
CAMSHAFT 
POSITION (CMP) 
SENSOR 
INSPECTION [FS])

•

Inspect related 
harness

87

—

—

—

—

—

88

MAF

MAF sensor

Ignition switch ON

0.9—2.0

•

Inspect MAF sensor
(See 01–40B–28 
MASS AIR FLOW 
(MAF) SENSOR 
INSPECTION [FS])

•

Inspect related 
harness

Idle

1.7—2.4

89

Throttle position

TP sensor

Ignition switch 
ON

CTP

0.1—1.1

•

Inspect TP sensor
(See 01–40B–29 
THROTTLE 
POSITION (TP) 
SENSOR 
INSPECTION [FS])

•

Inspect related 
harness

WOT

3.0—4.6

90

Constant voltage 
(Vref)

TP sensor, EGR 
boost sensor, Fuel 
tank pressure 
sensor

Ignition switch ON

Approx. 

5.0

•

Inspect related 
harness

91

Sensor GND

ECT sensor, IAT 
sensor, EGR 
boost sensor, Fuel 
tank pressure 
sensor, TP 
sensor, HO2S 
(Front, Rear), TFT 
sensor

Under any condition

Below 1.0

•

Inspect related 
harness

92

Brake

Brake switch

Brake pedal depressed

B+

•

Inspect brake switch
(See 04–11–5 BRAKE 
SWITCH 
INSPECTION)

•

Inspect related 
harness

Brake pedal released

Below 1.0

93

HO2S (Rear) heater 
control

HO2S (Rear)

Idle

ECT above 
70

°

C {158 

°

F}

Below 1.0

•

Inspect HO2S (Rear)
(See 01–40B–38 
HO2S Heater (Front 
and Rear) Resistance 
Inspection)

•

Inspect related 
harness

HO2S (Rear) is 
malfunctioning

B+

94

HO2S (Front) 
heater control

HO2S (Front) 

Ignition switch ON (engine 
stopped)

B+

•

Inspect HO2S (Front) 
heater.
(See 01–40B–38 
HO2S Heater (Front 
and Rear) Resistance 
Inspection)

•

Inspect related 
harness

Approx. 15 s after engine start 
with ECT 20—30

°

C {68—86 

°

F}

Below 1.0

Others

Below 1.0 

⇔

 B+

95

PRC

PRC solenoid 
valve

Ignition switch ON

B+

•

Inspect PRC solenoid 
valve
(See 01–14–31 PRC 
SOLENOID VALVE 
INSPECTION)

•

Inspect related 
harness

After hot start

Below 1.0

Terminal

Signal

Connected to

Test condition

Voltage 

(V)

Action

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