Mitsubishi Eclipse. Manual — part 510

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-583

DTC P0340: Camshaft Position Sensor Circuit

AK101611

4

3

2

6

5

7

1

RED

-

WHITE

RED

-

WHITE

RED

-

WHITE

RED

RED

-WHITE

BROWN

ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>

5 V

4

7

3

1

2

6

5

BATTERY

CAMSHAFT POSITION SENSOR
(BUILT INTO DISTRIBUTOR)

MFI
RELAY

B-22
(MU802054)

50 <M/T>*2
56 <A/T>*4

65

43
50

42
49

41

48
60 61

64

46 47
58 59
67 68

45

56
66

52

51

44

53

62

54

63

57

55

C-58 <M/T>
(MU803782)

C-55 <A/T>
(MU803781)

42 43
48 49 50 51 52 53 54 55 56 57

46

45

44

58 59

60 61 62 63

64 65 66

47

41

Camshaft Position Sensor Circuit

34 <M/T>*1
16 <A/T>*3

C-51 <M/T>, C-52 <A/T>
(MU803784)

2

3 4

5 6

7 8

9

11 12 13 14 15 16 17 18 19 20

30

21 22 23

24 25

26 27 28 29

3132 33

34 35

1

10

3 4

1 2

A-18X

NOTE
*1: ECM connector C-51 <M/T>
*2: ECM connector C-58 <M/T>
*3: PCM connector C-52 <A/T>
*4: PCM connector C-55 <A/T>

AK300090

DISTRIBUTOR
ASSEMBLY

B-22 (B)

AB

CONNECTOR: B-22

AK300244

CONNECTORS: C-52, C-55 <A/T>

AB

PCM

C-52 (GR)

C-55 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-584

.

CIRCUIT OPERATION

• The camshaft position sensor power is supplied

from the MFI relay (terminal No. 4).

• Terminal 7 of the camshaft position sensor is

grounded with ECM (terminal No. 34) <M/T> or
PCM (terminal No. 16) <A/T>.

• A 5-volt voltage is applied on the camshaft posi-

tion sensor output terminal (terminal No. 5) from
the ECM (terminal No. 50) <M/T> or PCM (termi-
nal No. 56) <A/T>. The camshaft position sensor
generates a pulse signal when the output termi-
nal is opened and grounded.

.

TECHNICAL DESCRIPTION

• The camshaft position sensor functions to detect

the top dead center position of the number 1 cyl-
inder and to convert that data to pulse signals
that are input to the ECM <M/T> or PCM <A/T>.

• When the engine is running, the camshaft posi-

tion sensor outputs a pulse signal.

• The ECM <M/T> or PCM <A/T> checks whether

pulse signal is input while the engine is cranking.

.

DESCRIPTIONS OF MONITOR METHODS

• Camshaft position sensor signal does not

change.

• Camshaft position sensor signal is not normal

pattern.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Not applicable

.

AK300091

CONNECTORS: C-51, C-58 <M/T>

ECM

AB

C-51 (GR)

C-58 (GR)

AK300121

MFI RELAY

CONNECTOR: A-18X

AB

A-18X

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-585

DTC SET CONDITIONS <Range/Performance problem-alignment>

Logic Flow Chart

.

Check Conditions

• Engine speed is higher than 50 r/min.

Judgment Criteria

• Camshaft position sensor output voltage has not

changed (no pulse signal is input) for 2 seconds.

.

START

END

YES

NO

NO

YES

MALFUNCTION

GOOD

CONTINUOUS

FAILURE FOR 2secs

EXPECTED STATE

OF THE SENSOR

MONITORING
CONDITIONS?

YES

NO

AK301447

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-586

DTC SET CONDITIONS <Circuit continuity>

LOGIC FLOW CHART

Check Conditions

• Engine speed is higher than 50 r/min.

Judgment Criteria

• Normal signal pattern has not been input for cyl-

inder identification from the crankshaft position
sensor signal and camshaft position sensor sig-
nal for 2 seconds.

.

OBD-ll DRIVE CYCLE PATTERN
Refer to , Diagnostic Function

− OBD-ll Drive Cycle −

Procedure 6

− Other Monitor

P.13B-7

.

.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )

• Camshaft position sensor failed.

• Open or shorted camshaft position sensor circuit,

or harness damage or connector damage.

• ECM failed. <M/T>

• PCM failed. <A/T>

DIAGNOSIS

Required Special Tool:

• MB991348: Test Harmess

START

END

NO

NO

YES

YES

MALFUNCTION

GOOD

OUTPUT SIGNAL

CHANGES

CONTINUOUS

FAILURE FOR 2secs

MONITORING

CONDITIONS?

YES

NO

AK301448