Nissan Teana J32. Instruction — part 401
EC-142
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
7.
CHECK INTERMITTENT INCIDENT
Perform
GI-35, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000003856518
1.
CHECK AIR FUEL RATIO (A/F) SENSOR 1
Check resistance between A/F sensor terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1.
CAUTION:
• Discard any (A/F) sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
• Before installing new (A/F) sensor, clean exhaust system threads using Heated Oxygen Sensor
Thread Cleaner and approved anti-seize lubricant.
>> INSPECTION END
Terminal No.
Resistance
3 and 4
1.8 - 2.44
Ω
[at 25
°
C (77
°
F)]
3 and 1, 2
∞
Ω
(Continuity should not exist)
4 and 1, 2
P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-143
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0037, P0038, P0057, P0058 HO2S2 HEATER
Description
INFOID:0000000003856519
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
DTC Logic
INFOID:0000000003856520
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at
idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
Sensor
Input signal to ECM
ECM function
Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine speed
Heated oxygen sensor 2
heater control
Heated oxygen sensor 2 heater
Engine coolant temperature sensor
Engine coolant temperature
Mass air flow sensor
Amount of intake air
Engine speed
Heated oxygen sensor 2 heater
Above 3,600 rpm
OFF
Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load
ON
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0037
Heated oxygen sensor 2
heater (bank 1) control
circuit low
The current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
• Harness or connectors
(The heated oxygen sensor 2 heater
circuit is open or shorted.)
• Heated oxygen sensor 2 heater
P0038
Heated oxygen sensor 2
heater (bank 1) control
circuit high
The current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
• Harness or connectors
(The heated oxygen sensor 2 heater
circuit is shorted.)
• Heated oxygen sensor 2 heater
P0057
Heated oxygen sensor 2
heater (bank 2) control
circuit low
The current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
• Harness or connectors
(The heated oxygen sensor 2 heater
circuit is open or shorted.)
• Heated oxygen sensor 2 heater
P0058
Heated oxygen sensor 2
heater (bank 2) control
circuit high
The current amperage in the heated oxygen sensor
2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
• Harness or connectors
(The heated oxygen sensor 2 heater
circuit is shorted.)
• Heated oxygen sensor 2 heater
EC-144
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
P0037, P0038, P0057, P0058 HO2S2 HEATER
1.
Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2.
Start engine and warm it up to the normal operating temperature.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5.
Let engine idle for 1 minute.
6.
Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003856521
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection E38. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK HO2S2 POWER SUPPLY CIRCUIT
1.
Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between HO2S2 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• IPDM E/R connector F12
• 15A fuse (No. 46)
• Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between HO2S2 harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
DTC
HO2S2
Ground
Voltage
Bank
Connector
Terminal
P0037, P0038
1
F70
2
Ground
Battery voltage
P0057, P0058
2
F71
2
DTC
HO2S2
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0037, P0038
1
F70
3
F7
13
Existed
P0057, P0058
2
F71
3
17
P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-145
< COMPONENT DIAGNOSIS >
[VQ25DE, VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK HEATED OXYGEN SENSOR 2 HEATER
EC-145, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor 2.
CAUTION:
• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
• Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner and approved anti-seize lubricant.
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-35, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000003856522
1.
CHECK HEATED OXYGEN SENSOR 2 HEATER
Check resistance between HO2S2 terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE HEATED OXYGEN SENSOR 2
Replace malfunctioning heated oxygen sensor 2.
CAUTION:
• Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
• Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner and approved anti-seize lubricant.
>> INSPECTION END
Terminal No.
Resistance
2 and 3
3.4 - 4.4
Ω
[at 25
°
C (77
°
F)]
1 and 2, 3, 4
∞
Ω
(Continuity should not exist)
4 and 1, 2, 3
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