Mitsubishi Outlander XL. Manual - part 262

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MB991827: USB Cable

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MB991910: Main Harness A

STEP 1. Check harness connector D-30 at the center
exhaust pipe heated oxygen sensor and harness connector
D-30 at ECM for damage.

Q:Is the harness connector in good condition?

YES:

Go to Step 2.

NO:

Repair it. Refer to GROUP 00E, Harness Connector

Inspection P.00E-2. Then go to Step 3.

STEP 2. Check for short circuit to power supply between the
center exhaust pipe heated oxygen sensor connector D-30
(terminal No. 3) and the ECM connector B-11 (terminal No.
101).

Q:Is the harness wire in good condition?

YES:

Go to Step 3.

NO:

Repair it. Then go to Step 3.

STEP 3. 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 24 P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0138 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.

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.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-243

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0145: Heated Oxygen Sensor Circuit Slow Response (bank 1, sensor 3)

M11310100365USA0000010000

ZK602864

1 2
3 4

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

AA00

D-30

FROM MFI RELAY

TO ECM

CENTER EXHAUST PIPE HEATED OXYGEN SENSOR CIRCUIT

CENTER EXHAUST PIPE
HEATED OXYGEN
SENSOR

B-11

YELLO

ORANGE

YELLO

ENGINE
CONTROL
MODULE

0.5 V

C-129

116

101

13Ab-244

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK600417 AA00

Center exhaust pipe
heated oxygen sensor

Connector: D-30

D-30 (B)

Rear heater duct

ZK603592

ECM

B-11 (GR)

Connector: B-11

AA00

ZK603651AA00

C-129

Connector: C-129

CIRCUIT OPERATION

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A voltage corresponding to the oxygen
concentration in the exhaust gas is sent to the ECM
(terminal No. 101) from the output terminal (terminal
No. 3) of the center exhaust pipe heated oxygen
sensor.

｠

Terminal No. 4 of the center exhaust pipe heated
oxygen sensor is grounded with ECM (terminal No.
116).

｠

The ECM applies an offset voltage of 0.5 volt to
terminal No. 4 of the center exhaust pipe heated
oxygen sensor.

TECHNICAL DESCRIPTION
The ECM checks for the center exhaust pipe heated
oxygen sensor output voltage.

DESCRIPTIONS OF MONITOR METHODS
Center exhaust pipe heated oxygen sensor output
voltage does not reach 0.2 volt after fuel cut operation.

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)

｠

Heated oxygen sensor heater (front) monitor

｠

Center exhaust pipe heated oxygen sensor heater

｠

Air/fuel ratio feedback monitor

Sensor (The sensor below is determined to be
normal)

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Mass airflow sensor

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-245

DIAGNOSTIC TROUBLE CODE PROCEDURES

｠

Engine coolant temperature sensor

DTC SET CONDITIONS

Logic Flow Chart

End

Start

Yes

Malfunction

Good

6secs have passed?

Yes

Monitoring

conditions

ZK603720AA00

Yes

Fuel cut start?

Output voltage > 0.5V

at fuel cut start?

Output voltage

crosses 0.2V

during fuel cut

Check Conditions

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Engine coolant temperature is higher than 76°C
(169°F).

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The center exhaust pipe heated oxygen sensor
(front) is active.

｠

The cumulative mass airflow sensor output is higher
than 2,900 g.

｠

Fuel is being shut off.

13Ab-246

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

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