Mazda Protege 5. Manual - part 182

 

  Index      Mazda     Mazda Protege 5 - service repair manual 2002 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  180  181  182  183   ..

 

 

Mazda Protege 5. Manual - part 182

 

 

CONTROL SYSTEM [FS]

01–40B–37

01–40B

KNOCK SENSOR REMOVAL/INSTALLATION [FS]

A3U014018921W02

1. Disconnect the knock sensor connector.
2. Remove the knock sensor.
3. Install in the reverse order of removal.

Tightening torque

19.6—34.3 N·m {2.00—3.49 kgf·m, 14.5—25.2 ft·lbf}

End Of Sie

HEATED OXYGEN SENSOR (HO2S) INSPECTION [FS]

A3U014018861W01

HO2S (Front and Rear) Voltage Inspection

Note

Perform the following test only when directed.

1. Warm up the engine and run it at idle.
2. Disconnect the HO2S (Front or Rear) connector.
3. Connect a voltmeter test leads to the following HO2S terminals:

(+) lead—HO2S terminal A

(–) lead—HO2S terminal B

4. Run the engine at 3,000 rpm until the voltmeter 

indicates approx. 0.5—0.7 V.

5. Verify that the voltmeter needle moves when the 

engine speed increases and decreases suddenly 
several times.

If not as specified, replace the HO2S.

If the HO2S is okay, but PID value or PCM 
terminal 60 (Front), 35 (Rear) voltage are out 
of specification, carry out the “Circuit Open/
Short Inspection”.

Specification

Circuit Open/Short Inspection

1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].)
2. Connect the SST (104 Pin Breakout Box) to the 

PCM as shown.

3. Tighten the connector attaching screw.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

4. Inspect for an open or short circuit in the following 

wiring harnesses by probing the applicable 
sensor and SST (104 Pin Breakout Box) terminals 
with ohmmeter leads.

If there is an open or short circuit, repair or 
replace wiring harnesses.

If there is no open or short circuit, replace the HO2S.

Engine condition

Voltage (V)

Acceleration

0.5—1.0

Deceleration

0—0.5

Z3U0140W023

X3U140WE8

1712-1U-01G(01-40B).fm  37 ページ  2001年6月29日 金曜日 午前9時51分

CONTROL SYSTEM [FS]

01–40B–38

Open circuit

HO2S signal circuit (HO2S connector terminal 
A and PCM connector terminal 60 (Front), 35 
(Rear))

GND circuit (HO2S connector terminal B and 
PCM connector terminal 91)

Short circuit

HO2S signal circuit (HO2S terminal A and 
PCM connector terminal 60 (Front), 35 (Rear) 
to GND)

5. Reconnect the HO2S connector.

HO2S Heater (Front and Rear) Resistance Inspection

1. Disconnect the HO2S (Front or Rear) connector.
2. Measure the resistance between HO2S terminals C and D using an ohmmeter.

If not as specified, replace the HO2S.

If the HO2S heater is okay, but PID value or PCM terminal 94 (Front), 93 (Rear) voltage are out of 
specification, carry out the “Circuit Open/Short Inspection”.

Specification

Front: Approx. 5.6 ohms
Rear: Approx. 15.7 ohms

Circuit Open/Short Inspection

1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].)
2. Connect the SST (104 Pin Breakout Box) to the 

PCM as shown.

3. Tighten the connector attaching screw.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

4. Inspect for an open or short circuit in the following 

wiring harnesses by probing the applicable 
sensor and SST (104 Pin Breakout Box) terminals 
with ohmmeter leads.

If there is an open or short circuit, repair or 
replace wiring harnesses.

If there is no open or short circuit, replace the HO2S.

Z3U0140W024

Z3U0140W023

X3U140WE8

1712-1U-01G(01-40B).fm  38 ページ  2001年6月29日 金曜日 午前9時51分

CONTROL SYSTEM [FS]

01–40B–39

01–40B

Open circuit

Control circuit (HO2S connector terminal C 
and ignition switch (IG1) circuit through 
common connector)

GND circuit (HO2S connector terminal D and 
PCM connector terminal 94 (Front), 93 
(Rear))

Short circuit

Control circuit (HO2S connector terminal C 
and ignition switch (IG1) circuit through 
common connector to GND)

GND circuit (HO2S connector terminal D and 
PCM connector terminal 94 (Front), 93 (Rear) 
to GND)

5. Reconnect the HO2S connector.

End Of Sie

EGR BOOST SENSOR INSPECTION [FS]

A3U014018211W01

Note

Perform the following test only when directed.

The following vacuum values are indicated by relative pressure from barometric pressure.

1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].)
2. Connect the SST (104 Pin Breakout Box) to the 

PCM as shown.

3. Tighten the connector bolt.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

Caution

••••

Do not apply vacuum outside of the 
specified limits, or the EGR boost sensor 
will be damaged.

4. Turn the ignition switch to ON.
5. Disconnect the vacuum hose between the EGR 

boost sensor and intake manifold.

Note

The output voltage varies with the 
measuring condition.

6. Verify that the PCM 34 terminal voltage is within 

specification.

Measuring condition:

Input voltage: 4.5—5.5 V
Ambient temperature: 10—50 

°°°°

C {50—122 

°°°°

F}

Sea level: –20—3,000 m {–656—9,840 ft}

Specification

Measuring voltage: 2.3—4.7 V

7. Apply vacuum of –26.6 kPa {–200 mmHg, –7.85 inHg} to EGR boost sensor and verify that the PCM 34 

terminal voltage variation from the specified voltage in Step 6 is within specification.

If not as specified, carry out the “Circuit Open/Short Inspection”.

Specification

Monitoring voltage variation: 0.8—1.3 V

Z3U0140W024

X3U140WAX

X3U140WAY

1712-1U-01G(01-40B).fm  39 ページ  2001年6月29日 金曜日 午前9時51分

CONTROL SYSTEM [FS]

01–40B–40

Circuit Open/Short Inspection

1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].)
2. Connect the SST (104 Pin Breakout Box) to the 

PCM as shown.

3. Tighten the connector attaching screw.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

4. Inspect for an open or short circuit in the following 

wiring harnesses by probing the applicable 
sensor and SST (104 Pin Breakout Box) terminals 
with ohmmeter leads.

If there is an open or short circuit, repair or 
replace wiring harnesses.

If there is no open or short circuit, replace the EGR boost sensor.

Open circuit

EGR boost (Barometric pressure) signal circuit (EGR boost sensor connector terminal A and PCM 
connector terminal 34)

Constant voltage circuit (EGR boost sensor connector terminal C and PCM connector terminal 90)

GND circuit (EGR boost sensor connector terminal B and PCM connector terminal 91)

Short circuit

EGR boost (Barometric pressure) signal 
circuit (EGR boost sensor connector terminal 
A and PCM connector terminal 34)

Constant voltage circuit (EGR boost sensor 
connector terminal C and PCM connector 
terminal 90)

5. Reconnect the EGR boost sensor connector.

End Of Sie

FUEL TANK PRESSURE SENSOR INSPECTION [FS]

A3U014018212W01

Note

Perform the following test only when directed.

The following vacuum values are indicated by relative pressure from barometric pressure.

1. Remove the PCM. (See 01–40B–7 PCM REMOVAL/INSTALLATION [FS].)
2. Connect the SST (104 Pin Breakout Box) to the 

PCM as shown.

3. Tighten the connector bolt.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

Caution

••••

Do not apply vacuum outside of the 
specified limits, or the fuel tank pressure 
sensor will be damaged.

4. Turn the ignition switch to ON.

X3U140WAX

Y3U140WA7

X3U140WB3

1712-1U-01G(01-40B).fm  40 ページ  2001年6月29日 金曜日 午前9時51分

 

 

 

 

 

 

 

Content   ..  180  181  182  183   ..