Nissan Frontier D22. Manual - part 292

DTC P0340 CMP SENSOR

EC-271

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Wiring Diagram

UBS00D6E

BBWA1060E

EC-272

[KA24DE]

DTC P0340 CMP SENSOR

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

TER-

MINAL 

NO. 

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

4

LG/R

ECM relay
(Self shutoff)

[Engine is running]
[Ignition switch: OFF]

●

For a few seconds after turning ignition switch 
OFF

0 - 1V

[Ignition switch: OFF]

●

More than a few seconds after turning ignition 
switch OFF

BATTERY VOLTAGE
(11 - 14V)

44
48

PU
PU

Camshaft position sen-
sor (Reference signal)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle.

0.2 - 0.5V

[Engine is running]

●

Engine speed is 2,000 rpm

0 - 0.5V

49

LG

Camshaft position sen-
sor (Position signal)

[Engine is running]

●

Warm-up condition

●

Idle speed

NOTE:
The pulse cycle changes depending on rpm at 
idle.

Approximately 2.6V

[Engine is running]

●

Engine speed is 2,000 rpm

Approximately 2.5 - 2.6V

67

B/P

Power supply for ECM

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14V)

72

B/P

117

B/P

Current return

[Engine is running]

●

Idle speed

BATTERY VOLTAGE
(11 - 14V)

SEF114V

SEF200T

SEF195T

SEF196T

DTC P0340 CMP SENSOR

EC-273

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Diagnostic Procedure

UBS00D6F

1. 

CHECK STARTING SYSTEM

Does the engine turn over?
(Does the starter motor operate?)

Yes or No

Yes

>> GO TO 2.

No

>> Check starting system. Refer to 

SC-9, "STARTING SYSTEM"

 .

2. 

RETIGHTEN GROUND SCREWS

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws.

>> GO TO 3.

3. 

CHECK POWER SUPPLY

1.

Disconnect camshaft position (CMP) sensor harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between terminal 5 and ground with CONSULT-II
or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness for open or short between camshaft position sensor and ECM relay

●

Harness for open or short between camshaft position sensor and ECM

>> Repair open circuit or short to ground or short to power in harness or connectors.

BBIA0431E

SEF128S

Voltage

: Battery voltage

SEF040S

EC-274

[KA24DE]

DTC P0340 CMP SENSOR

5. 

CHECK INPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between CMP sensor terminal 4 and ECM terminal 49, CMP sensor terminal 3
and ECM terminals 44, 48.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 6.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

6. 

CHECK GROUND CIRCUIT

1.

Check harness continuity between CMP sensor terminal 6 and engine ground.
Refer to Wiring Diagram.

2.

Also check harness for short to power.

OK or NG

OK

>> GO TO 7.

NG

>> Repair open circuit or short to power in harness or connectors.

7. 

CHECK CAMSHAFT POSITION SENSOR

Refer to 

EC-274, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace camshaft position sensor.

8. 

CHECK INTERMITTENT INCIDENT

Perform 

EC-120, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END.

Component Inspection

UBS00D6G

CAMSHAFT POSITION SENSOR

1.

Reconnect all harness connector disconnected.

2.

Start engine and warm it up to normal operating temperature.

Continuity should exist.

Continuity should exist.