Mazda Protege 5. Manual — part 183

CONTROL SYSTEM [FS]

01–40B–41

01–40B

5. Apply pressure then vacuum to the fuel tank

pressure sensor according to the following
procedure.

Note

•

The output voltage varies with the
measuring condition.

6. Decrease the applied pressure from +6.66 kPa

{+50 mmHg, +1.97 inHg} to –6.66 kPa {–50
mmHg, –1.97 inHg} and verify that the PCM
terminal 62 voltage decreases accordingly as
specified.

•

If not as specified, replace the fuel tank
pressure sensor.

•

If fuel tank pressure sensor is okay, but PCM terminal 62 voltage is out of specification, carry out the
“Circuit Open/Short Inspection”.

Specification

*

: Measuring condition is as follows

Input voltage: 5.0 V
Barometric pressure: 101.3 kPa {760 mmHg, 29.9 inHg} (Absolute pressure)
Barometric temperature: 30—100

°°°°

C {0—182

°°°°

F}

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 fuel tank pressure sensor.

Open circuit

•

Fuel tank pressure signal circuit (Fuel tank pressure sensor connector terminal B and PCM connector
terminal 62)

•

Constant voltage circuit (Fuel tank pressure sensor connector terminal C and PCM connector terminal 90)

•

GND circuit (Fuel tank pressure sensor connector terminal A and PCM connector terminal 91)

Applied pressure

Output voltage (V)*

–6.66 kPa

{–50 mmHg, –1.97 inHg}

0.45—0.55

0 kPa {0 mmHg, 0 inHg}

2.25—2.75

+6.66 kPa

{+50 mmHg, +1.97 inHg}

4.05—4.95

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CONTROL SYSTEM [FS]

01–40B–42

Short circuit

•

Fuel tank pressure signal circuit (Fuel tank
pressure sensor connector terminal B and
PCM connector terminal 62)

•

Constant voltage circuit (Fuel tank pressure
sensor connector terminal C and PCM
connector terminal 90)

5. Reconnect the fuel tank pressure sensor

connector.

End Of Sie

CLUTCH SWITCH INSPECTION [FS]

A3U014018660W01

Note

•

Perform the following test only when directed.

1. Verify that the clutch switch is installed properly.
2. Disconnect the negative battery cable.
3. Remove the clutch switch. (See 05–10–5

CLUTCH PEDAL REMOVAL/INSTALLATION.)

4. Inspect the continuity between the clutch switch

terminals using an ohmmeter.

•

If not as specified, replace the clutch switch.

•

If the clutch switch is okay, but PID value or
PCM terminal 6 voltage is out of specification,
carry out the “Circuit Open/Short Inspection”.

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 clutch switch.

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CONTROL SYSTEM [FS]

01–40B–43

01–40B

Open circuit

•

Signal circuit (Clutch switch connector terminal B and PCM connector terminal 6 through common
connector)

•

GND circuit (Clutch switch connector terminal A and GND)

Short circuit

•

Signal circuit (Clutch switch connector
terminal B and PCM connector terminal 6
through common connector to GND)

5. Install the clutch switch.

End Of Sie

NEUTRAL SWITCH INSPECTION [FS]

A3U014017640W01

Note

•

Perform the following test only when directed.

1. Disconnect the negative battery cable.
2. Remove the neutral switch.
3. Inspect for continuity between the neutral switch

terminals using an ohmmeter.

•

If not as specified, replace the neutral switch.

•

If the neutral switch is okay, but PID value or
PCM terminal 64 voltage is out of
specification, carry out the “Circuit Open/
Short Inspection”.

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 neural switch.

Open circuit

•

Signal circuit (Neutral switch connector terminal A and PCM connector terminal 64 through common
connector)

•

GND circuit (Neutral switch connector terminal B and GND through common connector)

Short circuit

•

Signal circuit (Neutral switch connector terminal A and PCM terminal 64 through common connector to
GND)

Z3U0140W031

A3U0140W004

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CONTROL SYSTEM [FS]

01–40B–44

5. Install the neutral switch.

End Of Sie

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [FS]

A3U014032230W01

Continuity Inspection

Note

•

Perform the following test only when directed.

1. Inspect as follows if the power steering is inoperative. (See 06–12–3 POWER STEERING FLUID

INSPECTION.)

•

Power steering fluid level

•

Power steering fluid leakage

•

Power steering fluid pressure

2. Disconnect the PSP switch connector.
3. Start the engine.
4. Inspect for continuity between the PSP switch terminal and GND using an ohmmeter.

•

If not as specified, replace the PSP switch.

•

If the PSP switch is okay, but PID value or PCM terminal 31 voltage are out of specification, carry out the
“Circuit Open/Short Inspection”.

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 PSP switch.

Open circuit

•

PSP signal circuit (PSP switch connector terminal and PCM connector terminal 31 through common
connector)

•

GND circuit (PSP switch body and GND)

Short circuit

•

PSP signal circuit (PSP switch connector terminal and PCM connector terminal 31 through common
connector to GND)

5. Reconnect the PSP switch connector.

End Of Sie

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