Mitsubishi Outlander GS45X. Manual - part 642

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-391

.

CIRCUIT OPERATION

• The exhaust camshaft position sensor power is 

supplied from the ECM (terminal No. 9).

• Terminal No. 2 of the exhaust camshaft position 

sensor is grounded with ECM (terminal No. 23).

• A 5-volt voltage is applied on the exhaust cam-

shaft position sensor output terminal (terminal 
No. 3) from the ECM (terminal No. 7). The 
exhaust camshaft position sensor generates a 
pulse signal when the output terminal is opened 
and grounded.

.

TECHNICAL DESCRIPTION

• The exhaust camshaft position sensor detects 

the position of the exhaust camshaft and inputs 
the pulse signal to the ECM.

• In response to the exhaust camshaft position 

sensor signal, the ECM controls variable valve 
timing (V.V.T.).

.

DESCRIPTIONS OF MONITOR METHODS

• Exhaust camshaft position sensor signal does not 

change.

• Exhaust 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

.

AK704129

AB

Exhaust camshaft
position sensor

Engine hanger

Connector: B-22

B-22 (GR)

AK704090AB

Connector: B-10

B-10 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-392

DTC SET CONDITIONS <Circuit continuity>

Logic Flow Chart

Check Condition

• Engine is being cranked.

or

• Engine speed is higher than 500 r/min excluding 

during cranking.

Judgement Criterion

• Exhaust camshaft position sensor output voltage 

has not changed (no pulse signal is input) for 2 
seconds.

.

Good

Malfunction

Output signal

changes

End

No

No

No

AK604334

Start

Yes

Yes

Yes

Monitoring
conditions

Continuous

failure for 2secs

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-393

DTC SET CONDITIONS <Range/Performance problem 

− alignment>

Logic Flow Chart

Check Condition

• Engine is being cranked.

or

• Engine speed is higher than 500 r/min excluding 

during cranking.

Judgement Criterion

• Normal signal pattern has not been input for cyl-

inder identification from the crankshaft position 
sensor signal and exhaust camshaft position sen-
sor signal for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 23 

P.13A-11

.

.

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

• Exhaust camshaft position sensor failed.

• Open or shorted exhaust camshaft position sen-

sor circuit, or harness damage, or connector 
damage.

• Exhaust camshaft failed.

• ECM failed. 

DIAGNOSIS

Required Special Tools:

• MB991709: Test Harness

• MB992110: Power Plant ECU Check Harness

Good

Malfunction

Correct signal

pattem is detected

End

No

No

No

AK604335

Start

Yes

Yes

Yes

Monitoring
conditions

Continuous

failure for 2secs

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-394

STEP 1. Using the oscilloscope, check the exhaust 
camshaft position sensor.
(1) Disconnect the exhaust camshaft position sensor connector 

B-22, and connect test harness special tool (MB991709) 
between the separated connectors. (All terminals should be 
connected.)

(2) Connect the oscilloscope probe to the exhaust camshaft 

position sensor side connector terminal No. 3.
NOTE: When measuring with the ECM side connector, dis-
connect all ECM connectors. Connect the check harness 
special tool (MB992110) between the separated connec-
tors. Then connect the oscilloscope probe to the check har-
ness connector terminal No. 7.

(3) Start the engine and run at idle.

(4) Check the waveform.

• The waveform should show a pattern similar to the illus-

tration.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?

YES : Go to Step 2.
NO :  Go to Step 4.

STEP 2. Check harness connector B-22 at exhaust 
camshaft position sensor and harness connector B-10 at 
ECM for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 19.

AK604465

3

2

1

AE

Exhaust camshaft position
sensor connector

Oscilloscope

MB991709

AK704130AB

2 engine revolutions

Normal waveform

5 Volts