Mazda Protege 5. Manual - part 181

CONTROL SYSTEM [FS]

01–40B–33

01–40B

Resistance Inspection

1. Disconnect the CKP sensor connector.
2. Measure the resistance between the CKP sensor terminals A and B using an ohmmeter.

•

If not as specified, replace the CKP sensor.

•

If CKP sensor resistance is okay, but PID value or PCM terminal 21 and 22 voltage is out of specification, 
carry out the “Circuit Open/Short Inspection”.

Specification

Approx. 550 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 CKP sensor.

Open circuit

•

CKP signal circuit (CKP sensor connector terminal A and PCM connector terminal 21)

•

CKP signal circuit (CKP sensor connector 
terminal B and PCM connector terminal 22)

Short circuit

•

CKP signal circuit (CKP sensor connector 
terminal A and PCM connector terminal 21 to 
GND)

•

CKP signal circuit (CKP sensor connector 
terminal B and PCM connector terminal 22 to 
GND)

5. Reconnect the CKP sensor connector.

End Of Sie

Y3U140WB8

X3U140WE8

Y3U140WBP

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CONTROL SYSTEM [FS]

01–40B–34

CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [FS]

A3U014018230W02

Caution

••••

When foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output 
from the sensor because of flux turbulence and adversely affect the engine control. Be sure there 
is no foreign material on the CKP sensor when replacing.

1. Disconnect the CKP sensor connector.
2. Remove the undercover.
3. Remove the CKP sensor installation bolt.
4. Install in the reverse order of removal.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

5. Reconnect the CKP sensor connector.

Caution

••••

Do not forcefully pull the wiring harness 
of the CKP sensor, or harness will be 
damaged.

End Of Sie

CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [FS]

A3U014018200W01

Caution

••••

When foreign material such as an iron chip is on the CMP sensor, it can cause abnormal output 
from the sensor because of flux turbulence and adversely affect the engine control. Be sure there 
is no foreign material on the CMP sensor when replacing.

1. Disconnect the negative battery cable.
2. Disconnect the CMP sensor connector.
3. Remove the CMP sensor installation bolt.
4. Remove the spacer.
5. Remove the CMP sensor.
6. Make sure that the CMP sensor is free of any metallic shavings or particles.

•

If metallic shavings or particles are found on the sensor, clean them off.

7. Install in the reverse order of removal.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

End Of Sie

X3U140WDH

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CONTROL SYSTEM [FS]

01–40B–35

01–40B

CAMSHAFT POSITION (CMP) SENSOR INSPECTION [FS]

A3U014018200W02

Resistance Inspection

Note

•

Perform the following test only when directed.

1. Disconnect the CMP sensor connector.
2. Measure the resistance between the CMP sensor connector terminals A and B using an ohmmeter.

•

If not as specified, replace the CMP sensor.

•

If CMP sensor resistance is okay, but PID value or PCM terminal 85 and 86 voltage are out of specification, 
carry out the “Circuit Open/Short Inspection”.

Specification

0.95—1.25 kilohms

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 CMP sensor.

Open circuit

•

CMP signal circuit (CMP sensor connector terminal A and PCM connector terminal 85)

•

CMP signal circuit (CMP sensor connector terminal B and PCM connector terminal 86)

Short circuit

•

CMP signal circuit (CMP sensor connector terminal A and PCM connector terminal 85 to GND)

•

CMP signal circuit (CMP sensor connector terminal B and PCM connector terminal 86 to GND)

5. Reconnect the CMP sensor connector.

End Of Sie

A3U0140W006

X3U140WE8

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CONTROL SYSTEM [FS]

01–40B–36

KNOCK SENSOR INSPECTION [FS]

A3U014018921W01

Note

•

Perform the following test only when directed.

Resistance Inspection

1. Turn the ignition switch to LOCK.
2. Disconnect the knock sensor connector.
3. Measure the resistance between the knock sensor terminals A and B.

•

If not as specified, replace the knock sensor.

•

If the knock sensor is okay, but PCM terminals 57 and 59 voltages are out of specification, perform the 
“Circuit Open/Short Inspection”.

Specification

532—588 kilohms (20 

°°°°

C {68 

°°°°

F})

Circuit Open/Short Inspection

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

PCM disconnected.

3. Tighten the connector attaching bolt.

Tightening torque

7.9—10.7 N·m 

{80—110 kgf·cm, 69.5—95.4 in·lbf}

4. Inspect the following wiring harness for open or 

short (Continuity check).

Open circuit

•

If there is no continuity, the circuit is open. Repair or replace the harness.
— Signal circuit (Knock sensor terminal A and PCM connector terminal 57)
— Signal circuit (Knock sensor terminal B and PCM connector terminal 59)

Short circuit

•

If there is continuity, the circuit is shorted. Repair or replace the harness.
— Signal circuit (Knock sensor terminal A and PCM connector terminal 57 to GND)
— Signal circuit (Knock sensor terminal B and PCM connector terminal 59 to GND)

End Of Sie

A3U0140W003

YMU116WAQ

A3U0140W002

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