Nissan Note E12. Manual — part 203
P0037, P0038 HO2S2 HEATER
EC-151
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
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P0037, P0038 HO2S2 HEATER
DTC Logic
INFOID:0000000009022511
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to 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” above.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009022512
1.
CHECK HO2S2 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
3. Turn ignition switch ON.
4. Check the voltage between HO2S2 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0037
HO2 HTR (B1)
(Heated oxygen sensor 2
heater 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
(Heated oxygen sensor 2 heater
circuit is open or shorted.)
• Heated oxygen sensor 2 heater
P0038
HO2 HTR (B1)
(Heated oxygen sensor 2
heater 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
(Heated oxygen sensor 2 heater
circuit is shorted.)
• Heated oxygen sensor 2 heater
HO2S2
Ground
Voltage
Connector
Terminal
E63
2
Ground
Battery voltage
EC-152
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
P0037, P0038 HO2S2 HEATER
NO
>> Repair or replace error-detected parts.
2.
CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT
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 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK HEATED OXYGEN SENSOR 2 HEATER
Check the heated oxygen sensor 2 heater. Refer to
EC-152, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Replace heated oxygen sensor 2. Refer to
.
Component Inspection
INFOID:0000000009022513
1.
CHECK HEATED OXYGEN SENSOR 2 HEATER
1. Turn ignition switch OFF.
2. Disconnect heated oxygen sensor 2 (HO2S2) harness connector.
3. Check resistance between HO2S2 terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace heated oxygen sensor 2. Refer to
.
HO2S2
ECM
Continuity
Connector
Terminal
Connector
Terminal
E63
3
F10
5
Existed
Heated oxygen sensor 2
Resistance
+
−
Terminal
2
3
3.4 - 4.4
Ω [at 25°C (77°F)]
1
2
∞ Ω
(Continuity should not exist)
3
4
4
1
2
3
P0075 IVT CONTROL SOLENOID VALVE
EC-153
< DTC/CIRCUIT DIAGNOSIS >
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P0075 IVT CONTROL SOLENOID VALVE
DTC Logic
INFOID:0000000009022514
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009022515
1.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake valve timing (IVT) control solenoid valve harness connector.
3. Turn ignition switch ON.
4. Check the voltage between intake valve timing control solenoid valve harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness for open or short between intake valve timing control solenoid valve and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0075
Intake valve timing control
solenoid valve circuit
An improper voltage is sent to the ECM
through intake valve timing control solenoid
valve.
• Harness or connectors
(Intake valve timing control solenoid valve
circuit is open or shorted.)
• Intake valve timing control solenoid valve
IVT control solenoid valve
Ground
Voltage
Connector
Terminal
F23
2
Ground
Battery voltage
EC-154
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
P0075 IVT CONTROL SOLENOID VALVE
3. Check the continuity between intake valve timing control solenoid valve harness connector and ECM har-
ness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE
EC-154, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace intake valve timing control solenoid valve. Refer to
.
5.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000009022516
1.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-I
1. Turn ignition switch OFF.
2. Disconnect intake valve timing control solenoid valve harness connector.
3. Check resistance between intake valve timing control solenoid valve terminals as follows.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace intake valve timing control solenoid valve. Refer to
2.
CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE-II
1. Remove intake valve timing control solenoid valve. Refer to
2. Apply 12 V between intake valve timing control solenoid valve
terminals 1 and 2, and then interrupt it. Make sure that the
plunger moves as shown in the figure.
CAUTION:
Do not apply 12 V continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace intake valve timing control solenoid valve. Refer to
.
IVT control solenoid valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F23
1
F11
73
Existed
Intake valve timing control solenoid valve
Resistance
+
−
Terminal
1
2
7.0 - 7.7
Ω [at 20°C (68°F)]
1
Ground
∞ Ω
(Continuity should not exist)
2
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