Mitsubishi Outlander XL. Manual — part 217
Q:Is DTC P0032 set?
YES:
Retry the troubleshooting.
NO:
The inspection is complete.
DTC P0037: Heated Oxygen Sensor Heater Control Circuit Low (bank 1, sensor 2)
M11310100163USA0000010000
ZK602829
1
3
2
4
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
1
10 111213 14 1516 17 1819 20
2 3 4
5 6 7 8 9
2
1
4
3
AA00
RIGHT BANK HEATED OXYGEN SENSOR (REAR) HEATER CIRCUIT
20A
WHITE
BLUE-WHITE
WHITE
WHITE
WHITE
A-33X
MFI
RELAY
RELAY BOX
(ENGINE COMPARTMENT)
4
3
1
2
22
TO ECM
RIGHT BANK HEATED
OXYGEN SENSOR (REAR)
1
2
3
4
TO ECM TO ECM
ENGINE
CONTROL
MODULE
49
4
B-02
MU802605
B-10
A-13
OFF
ON
36
FUSIBLE LINK
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
13Ab-63
DIAGNOSTIC TROUBLE CODE PROCEDURES
ZK603589
MFI relay
A-33X
Connector: A-33X
AA00
ZK603593AA00
Right bank heated
oxygen sensor (rear)
Front exhaust
pipe RH
B-02 (B)
Connector: B-02
ZK603591
ECM
B-10 (GR)
Connector: B-10
AA00
ZK603650AA00
A-13
Connector: A-13
CIRCUIT OPERATION
⦆
Power is supplied from the MFI relay (terminal No.
4) to the right bank heated oxygen sensor (rear)
heater.
⦆
The ECM (terminal No. 49) controls continuity to the
right bank heated oxygen sensor (rear) heater by
turning the power transistor in the ECM "ON" and
"OFF".
TECHNICAL DESCRIPTION
⦆
The ECM checks whether the heater current is
within a specified range when the heater is
energized.
⦆
The ECM checks whether the heater voltage is
within a specified range when the heater is not
energized.
DESCRIPTIONS OF MONITOR METHODS
Right bank heated oxygen sensor heater (rear)
current or voltage is out of specified range.
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
13Ab-64
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC SET CONDITION
Logic Flow Chart
Start
End
Yes
Yes
Yes
No
No
No
Malfunction
Good
Continuous
failure for 2secs
Monitoring
conditions
Current < 0.17A
or
Current > 10.5A
Voltage < 2.0V
ZK603657 AA00
Heater ON
Yes
Yes
No
Check Conditions
⦆
More than 2 seconds have passed since the engine
starting sequence was completed.
⦆
While the right bank heated oxygen sensor (rear)
heater is on.
⦆
Battery positive voltage is at between 11 and 16.5
volts.
Judgement Criterion
⦆
The right bank heated oxygen sensor (rear) heater
current has continued to be lower than 0.17 ampere
for 2 seconds.
Check Conditions
⦆
More than 2 seconds have passed since the engine
starting sequence was completed.
⦆
While the right bank heated oxygen sensor (rear)
heater is off.
⦆
Battery positive voltage is at between 11 and 16.5
volts.
Judgement Criterion
⦆
The right bank heated oxygen sensor (rear) heater
voltage has continued to be lower than 2.0 voltage
for 2 seconds.
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
13Ab-65
DIAGNOSTIC TROUBLE CODE PROCEDURES
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 2 P.13Ab-8.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
⦆
Right bank heated oxygen sensor (rear) heater
failed.
⦆
Connector damage.
⦆
Harness damage
⦆
ECM failed.
DIAGNOSIS
Required Special Tools:
⦆
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 or replace it. Refer to GROUP 00E, Harness
Connector Inspection P.00E-2. Then go to Step 6.
STEP 2. Check the right bank heated oxygen sensor (rear).
ZK603154
Heated
oxygen
sensor
component
side
connector
MD998464
Red
Blue
AA00
(1)
Disconnect the right bank heated oxygen sensor (rear)
connector B-02 and connect test harness special tool,
MD998464, to the connector on the right bank heated oxygen
(rear) sensor side.
(2)
Measure the resistance between heated oxygen sensor
connector terminal No. 1 (red clip) and terminal No. 3 (blue
clip).
Standard value: 11 - 18 Ω [at 20°C (68°F)]
Q:Is the measured resistance between 11 and 18 ohms [at
20°C (68°F)]?
YES:
Go to Step 3.
NO:
Replace the right bank heated oxygen sensor (rear).
Then go to Step 6.
STEP 3. Measure the power supply voltage at right bank
heated oxygen sensor (rear) and harness side connector
B-02.
(1)
Disconnect the connector B-02 and measure at the harness
side.
(2)
Turn the ignition switch to the "ON" position.
13Ab-66
MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>
DIAGNOSTIC TROUBLE CODE PROCEDURES
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