Mitsubishi Galant 9G. Manual - part 1076

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-604

DTC P0335: Crankshaft Position Sensor Circuit

CAUTION

If DTC P0335 has been set, TCL related DTC 
U1120 is also set. After P0335 has been diag-
nosed, don't forget to erase DTC U1120.

RED-

WHITE

RED-

WHITE

RED

AK400914

BR

O

W

N

GREEN-RED

MFI RELAY

BATTERY

103

113

1

2

4

B-17X

POWERTRAIN
CONTROL
MODULE (PCM)

3

1 2

B-119

MU802603

3

2

1

3

CRANKSHAFT
POSITION
SENSOR

Crankshaft Position Sensor Circuit

B-22

1

2

3

4

100

99

92

91

93 94 95

96 97 98

101 102 103 104

105 106 107 108

109 110 111 112 113

TO PCM

5 V

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-605

.

CIRCUIT OPERATION

• The crankshaft position sensor power is supplied 

from the MFI relay (terminal No. 4).

• Terminal No. 1 of the crankshaft position sensor 

is grounded with PCM (terminal No. 113).

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

tion sensor output terminal (terminal No. 2) from 
the PCM (terminal No. 103). The crankshaft posi-
tion sensor generates a pulse signal when the 
output terminal is opened and grounded.

.

TECHNICAL DESCRIPTION

• The crankshaft position sensor detects the crank 

angle (position) of each cylinder, and converts 
that data to pulse signals, then which are input to 
the PCM.

• When the engine is running, the crankshaft posi-

tion sensor outputs a pulse signal.

• The PCM checks whether pulse signal is input 

while the engine is cranking.

.

AK303122

CRANKSHAFT
POSITION
SENSOR

AB

CRANKSHAFT
SPROCKET

CONNECTOR: B-119

B-119 (B)

AK303043

CONNECTOR: B-22

B-22 (B)

PCM

AB

AIR CLEANER

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

AK303014

CONNECTOR: B-17X

MFI RELAY

MFI RELAY

FRONT OF VEHICLE

B-17X

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-606

DESCRIPTIONS OF MONITOR METHODS

• Crankshaft position sensor signal does not 

change.

• Crankshaft 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

.

DTC SET CONDITIONS <Range/Performance problem - Alignment>

Logic Flow Chart

.

Check Conditions, 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.

.

START

END

YES

NO

NO

YES

MALFUNCTION

GOOD

CONTINUOUS

FAILURE FOR 2secs

EXPECTED STATE

OF THE SENSOR

MONITORING 
CONDITIONS?

YES

NO

AK302393

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>

13B-607

DTC SET CONDITIONS <Range/Performance problem - Circuit continuity>

Logic Flow Chart

.

Check Conditions

• Engine is being cranked.

Judgment Criteria

• Crankshaft position sensor output voltage has not 

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

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Procedure 6 

− Other Monitor 

P.13B-6

.

.

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

• Crankshaft position sensor failed.

• Open or shorted crankshaft position sensor cir-

cuit, or harness damage, or connector damage.

• PCM failed.

START

END

NO

NO

YES

YES

MALFUNCTION

GOOD

OUTPUT SIGNAL

CHANGES

CONTINUOUS

FAILURE FOR 2secs

CRANKING

SWITCH ON

YES

NO

AK302402