Mazda Protege 5. Manual — part 156

EMISSION SYSTEM

01–16–14

EGR SYSTEM DIAGRAM

A3U011620000W01

ZM

FS

End Of Sie

Z3U0116W004

Z3U0116W005

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EMISSION SYSTEM

01–16–15

01–16

EGR VALVE REMOVAL/INSTALLATION

A3U011620300W01

1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.

4. Connect the negative battery cable.

End Of Sie

EGR VALVE INSPECTION

A3U011620300W02

Resistance Inspection

Note

•

Perform the following test only when directed.

1. Disconnect the negative battery cable.
2. Inspect resistance of the EGR valve coils.

•

If not as specified, replace the EGR valve.

•

If as specified, inspect the vacuum hoses for
improper routing, kinks or leakage, and carry
out the “Circuit Open/Short Inspection” and
repair or replace the parts if necessary.

1

EGR valve connector

2

EGR valve

Z3U0116W007

Terminals

Resistance (ohm)

C—E
C—A
D—B

D—F

20—24

Y3U116WA8

X3U116WB4

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EMISSION SYSTEM

01–16–16

Circuit Open/Short Inspection

1. Remove the PCM.
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.
Open circuit

•

Control circuit (EGR valve connector terminal
E and PCM connector terminal 68)

•

Control circuit (EGR valve connector terminal
A and PCM connector terminal 72)

•

Control circuit (EGR valve connector terminal
B and PCM connector terminal 46)

•

Control circuit (EGR valve connector terminal
F and PCM connector terminal 56)

•

Power circuit (EGR valve connector terminal
C or D and main relay connector terminal D through common connector)

Short circuit

•

Control circuit (EGR valve connector terminal E and PCM connector terminal 68 to GND)

•

Control circuit (EGR valve connector terminal A and PCM connector terminal 72 to GND)

•

Control circuit (EGR valve connector terminal B and PCM connector terminal 46 to GND)

•

Control circuit (EGR valve connector terminal F and PCM connector terminal 56 to GND)

•

Power circuit (EGR valve connector terminal C or D and main relay connector terminal D through common
connector to GND)

5. Remove the EGR valve, and inspect for any damage or clogging. Replace the EGR valve if not as specified.
6. Connect the negative battery cable.

End Of Sie

Y3U116WAK

X3U116WB5

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EMISSION SYSTEM

01–16–17

01–16

EGR BOOST SENSOR SOLENOID VALVE INSPECTION

A3U011618744W01

Airflow Inspection

Note

•

Perform the following test only when directed.

1. Disconnect the negative battery cable.
2. Remove the EGR boost sensor solenoid valve.
3. Inspect airflow between each port under the

following conditions.

•

If not as specified, replace the EGR boost
sensor solenoid valve.

•

If as specified, inspect the vacuum hoses for
improper routing, kinks or leakage, and carry
out the “Circuit Open/Short Inspection” and
repair or replace the parts if necessary.

4. Connect the negative battery cable.

Circuit Open/Short Inspection

1. Remove the PCM.
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.
Open circuit

•

Power circuit (EGR boost sensor solenoid
valve connector terminal A and main relay
connector terminal D through common
connector)

•

Control circuit (EGR boost sensor solenoid
valve connector terminal B and PCM
connector terminal 98)

Short circuit

•

Power circuit (EGR boost sensor solenoid
valve connector terminal A and main relay connector terminal D through common connector to GND)

•

Control circuit (EGR boost sensor solenoid valve connector terminal B and PCM connector terminal 98 to
GND)

5. Install the EGR boost sensor solenoid valve.
6. Connect the negative battery cable.

End Of Sie

Y3U116WA3

X3U116WCB

Y3U116WAH

X3U116WB7

1712-1U-01G(01-16).fm 17 ページ ２００１年６月２９日 金曜日 午前９時４５分