Mitsubishi Outlander XL. Manual — part 256
DTC SET CONDITIONS
Logic Flow Chart
End
Malfunction
Yes
Yes
Yes
No
No
No
2secs have passed?
Output voltage
< 0.2V
Monitoring
conditions
Good
Start
ZK603708 AA00
Check Conditions
⦆
Heated oxygen sensor offset voltage is between 0.4
and 0.6 volt.
⦆
Battery positive voltage is between 11 and 16.5
volts.
⦆
3 minutes or more have passed since the engine
starting sequence was completed.
Judgement Criterion
⦆
Right bank heated oxygen sensor output voltage is
lower than 0.2 volt for 2 seconds.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 23 P.13Ab-8.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
⦆
Right bank heated oxygen sensor (rear) failed.
⦆
Connector damage.
⦆
Harness damage
⦆
ECM failed.
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
13Ab-219
DIAGNOSTIC TROUBLE CODE PROCEDURES
DIAGNOSIS
Required Special Tools:
⦆
MB991958: Scan Tool (M.U.T.-III Sub Assembly)
⦆
MB991824: V.C.I.
⦆
MB991827: USB Cable
⦆
MB991910: Main Harness A
⦆
MB998464: Test Harness
STEP 1. Check harness connector B-02 at the right bank
heated oxygen sensor (rear) and harness connector B-10 at
the 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 5.
STEP 2. Check the right bank heated oxygen sensor (rear).
(1)
Disconnect the right bank heated oxygen sensor (rear)
connector B-02 and connect test harness special tool,
MB998464, to the connector on the right bank heated oxygen
sensor (rear) side.
(2)
Warm up the engine until engine coolant temperature
reaches 80°C (176°F) or higher.
(3)
Drive at 50 km/h (31 mph) or more for 10 minutes.
ZK604080
Heated
oxygen
sensor
component
side
connector
MD998464
Black
White
AA00
(4)
Connect a digital voltage meter between terminal No. 2 (black
clip) and terminal No. 4 (white clip).
(5)
Measure the output voltage of heated oxygen sensor under
the following driving.
a
.
Transaxle: 2nd speed
b
.
Drive with wide open throttle
c
.
Engine: 3,500 r/min or more
Standard value: 0.6 - 1.0 volts
NOTE:
If the sufficiently high temperature [of
approximate 400°C (752°F) or more] is not reached
although the heated oxygen sensor is normal, the output
voltage would be possibly low although the rich air/fuel
ratio.
Q:Is the voltage between 0.6 and 1.0 volts?
YES:
Go to Step 3.
NO:
Replace the right bank heated oxygen sensor (rear).
Then go to Step 5.
STEP 3. Check for harness between the right bank heated
oxygen sensor (rear) connector B-02 and the ECM
connector B-10.
(1)
Disconnect the right bank heated oxygen sensor (front)
connector B-02 and the ECM connector B-10.
13Ab-220
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
DIAGNOSTIC TROUBLE CODE PROCEDURES
ZK603254
1
2
3
4
16 15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
AA00
B-10 harness
connector:
component side
B-03 harness
connector:
component side
(2)
Measure the resistance between the heated oxygen sensor
connector B-02 and the ECM connector B-10.
a
.
Connector B-02 (terminal No. 2) and connector B-10
(terminal No. 57).
b
.
Connector B-02 (terminal No. 4) and connector B-10
(terminal No. 56).
⦆
Should be less than 2 ohms.
1
2
3
4
ZK604079
B-02 harness
connector:
component side
AA00
(3)
Check for the continuity oxygen sensor connector B-03 and
ground.
a
.
Connector B-02 (terminal No. 2) and ground.
b
.
Connector B-02 (terminal No. 4) and ground.
⦆
Not continuity.
Q:Is the harness wire in good condition?
YES:
Go to Step 4.
NO:
Repair it. Refer to GROUP 00E, Harness Connector
Inspection P.00E-2. Then go to Step 5.
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 23 P.
13Ab-8
(2)
Check the diagnostic trouble code (DTC).
Q:Is DTC P0137 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. Then 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.
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
13Ab-221
DIAGNOSTIC TROUBLE CODE PROCEDURES
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 23 P.
13Ab-8.
(2)
Check the diagnostic trouble code (DTC).
Q:Is DTC P0137 set?
YES:
Retry the troubleshooting.
NO:
The inspection is complete.
DTC P0138: Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor 2)
M11310100191USA0000010000
ZK602839
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
0.5 V
2
1
4
3
AA00
ENGINE
CONTROL
MODULE
RIGHT BANK HEATED
OXYGEN SENSOR (REAR)
FROM MFI RELAY
TO ECM
1
2
3
4
57
PINK
LIGHT GREEN
56
RIGHT BANK HEATED OXYGEN SENSOR (REAR) CIRCUIT
B-10
B-02
MU802605
13Ab-222
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
DIAGNOSTIC TROUBLE CODE PROCEDURES
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