Mitsubishi Montero (2004+). Manual - part 245

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-467

DTC P0335: Crankshaft Position Sensor Circuit

WHITE-

BLA

C

K

WHITE-

BLA

C

K

RED

AK201142

SKY B

U

LE

BLUE-RED

MFI RELAY

BATTERY

70

88

3

2

1

3 4

1 2

B-22X

5V

POWERTRAIN
CONTROL
MODULE (PCM)

3

1 2

B-36

MU802603

3

2

1

4

CRANKSHAFT
POSITION
SENSOR

Crankshaft Position Sensor Circuit

61
656667686970 717273
74757677787980 8182
8384

858687

8889

62

6364

D-134

(MU803804)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-468

.

CIRCUIT OPERATION

• The crankshaft position sensor power is supplied 

from the MFI relay (terminal No. 1).

• Terminal No. 1 of the crankshaft position sensor 

is grounded with PCM (terminal No. 88).

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

tion sensor output terminal (terminal No. 2) from 
the PCM (terminal No. 70). 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, which are then 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.

.

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

.

AK201057AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

AK201038

CONNECTOR: D-134

AD

PCM

D-134(GR)

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-469

DTC SET CONDITIONS <Range/Performance problem 

− alignment>

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.

.

START

END

YES

NO

NO

YES

MALFUNCTION

GOOD

CONTINUOUS

FAILURE FOR 2secs

EXPECTED STATE

OF THE SENSOR

MONITORING 
CONDITIONS?

YES

NO

AK302944

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-470

DTC SET CONDITIONS <Circuit continuity>

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.

.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Procedure 6 

− Other Monitor 

P.13A-4

.

.

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, harness damage, or connector damage.

• PCM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

• MD998478: Test Harness (3 pin, triangle)

START

MONITORING
CONDITIONS

END

NO

NO

NO

YES

YES

YES

MALFUNCTION

GOOD

OUTPUT SIGNAL

CHANGES

CONTINUOUS

FAILURE FOR 2secs

AK302945