Content .. 357 358 359 360 ..

Mitsubishi Outlander XL. Manual - part 359

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

Logic Flow Chart

ZK604062 AA00

Start

End

Yes

Malfunction

Good

Continuous failure

for specfied time

|Ec-calculated Ec|

> 33%

Monitoring

conditions

Ec: load valve

Check Conditions

｠

The difference between the actual volumetric
efficiency and the volumetric efficiency estimated
by the (sub) throttle position sensor is 0 % or more.
Or, the volumetric efficiency is 60 % or less.

｠

The engine speed is between 750 and 3000r/min.
Or, the (sub) throttle position sensor output voltage
is 3 volts or more.

Judgment Criterion

｠

For 0.4 second, the difference between the actual
volumetric efficiency and the volumetric efficiency
estimated by the (sub) throttle position sensor is 33
% or more.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-631

DIAGNOSTIC TROUBLE CODE PROCEDURES

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle
Pattern 17 P.13Ab-8.

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

｠

Throttle position sensor (sub) system failed.

｠

Intake system vacuum leak.

｠

ECM failed.

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Turn the ignition switch to the "ON" position.

(3)

Read the DTC.

(4)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the diagnostic trouble code other than P1234 set?

YES:

Refer to, Diagnostic Trouble Code Chart P.13Ab-44.

NO:

Go to Step 2.

STEP 2. Using scan tool MB991958, check data list item 15:
Throttle Position Sensor (sub).

(1)

Turn the ignition switch to the "ON" position.

(2)

Detach the intake air hose at the throttle body.

(3)

Disconnect the connector of the throttle position sensor.

(4)

Use test harness special tool (MB991658) to connect only
terminals No. 3, No. 4, No. 5, and No. 6.

(5)

Set scan tool MB991958 to the data reading mode for item
15, Throttle Position Sensor (sub).

｠

Output voltage should be 4.0 volts or more when the
throttle valve is fully closed with your finger.

｠

Output voltage should be 1.0 volt or less when the throttle
valve is fully open with your finger.

13Ab-632

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

(6)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the sensor operating properly?

YES:

It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

NO:

Go to Step 3.

STEP 3. Check for intake system vacuum leak.

Q:Are there any abnormalities?

YES:

Repair it. Then go to Step 5.

NO:

Go to Step 4.

STEP 4. Check the trouble symptoms.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function - OBD-II Drive Cycle Pattern 17 P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P1234 set?

YES:

Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8. The go to Step 5.

NO:

It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

STEP 5. Test the OBD-II drive cycle.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function - OBD-II Drive Cycle Pattern 17 P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P1234 set?

YES:

Replace the troubleshooting.

NO:

The procedure is complete.

DTC P1235: Mass Airflow Sensor Plausibility

M11310100381USA0000010000

TECHNICAL DESCRIPTION
Compare the actual measurement of volumetric
efficiency by a mass airflow sensor signal with
volumetric efficiency estimated from a throttle position
sensor (main or sub) signal.

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-633

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITIONS

Logic Flow Chart

ZK604063 AA00

Start

End

Yes

Malfunction

Good

Continuous failure

for specfied time

|calculated Ec (TPS(main)

-calculated Ec (TPS(sub)|

<8.8%

Monitoring

conditions

Check Conditions

｠

The plausibility error of the (main) throttle position
sensor is detected.

｠

The plausibility error of the (sub) throttle position
sensor is detected.

Judgment Criterion

｠

For 0.36 second, the difference between the
volumetric efficiency estimated by the (main)
throttle position sensor and the volumetric efficiency
estimated by the (sub) throttle position sensor is 8.8
% or less.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle
Pattern 17 P.13Ab-8.

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

｠

Mass airflow sensor system failed.

｠

ECM failed.

13Ab-634

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

Content .. 357 358 359 360 ..