Nissan Maxima. Instruction — part 450
EC-284
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0222, P0223 TP SENSOR
P0222, P0223 TP SENSOR
Description
INFOID:0000000010094979
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.
DTC Logic
INFOID:0000000010094980
DTC DETECTION LOGIC
NOTE:
If DTC P0222 or P0223 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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 8 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 1 second.
2. Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010094981
Regarding Wiring Diagram information, refer to
.
1.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0222
Throttle position sensor
1 circuit low input
An excessively low voltage from the TP sensor
1 is sent to ECM.
• Harness or connectors
(The sensor circuit is open or shorted.)
• Electric throttle control actuator
(Throttle position sensor 1)
P0223
Throttle position sensor
1 circuit high input
An excessively high voltage from the TP sensor
1 is sent to ECM.
P0222, P0223 TP SENSOR
EC-285
< DTC/CIRCUIT DIAGNOSIS >
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NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch ON.
3. Check the voltage between electric throttle control actuator har-
ness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in
harness or connectors.
3.
CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between electric throttle control actuator and ECM harness 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, short to ground or short to power in harness or connectors.
4.
CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between electric throttle control actuator and ECM harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK THROTTLE POSITION SENSOR
EC-286, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
.
2. Refer to
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
.
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
Electric throttle control actuator
Ground
Voltage
Connector
Terminal
F57
1
Ground
Approx. 5 V
PBIB3484E
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F57
4
F13
36
Existed
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F57
2
F13
37
Existed
EC-286
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0222, P0223 TP SENSOR
>> INSPECTION END
Component Inspection
INFOID:0000000010094982
1.
CHECK THROTTLE POSITION SENSOR
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Perform
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
4. Turn ignition switch ON.
5. Set selector lever to D position.
6. Check the voltage between ECM harness connector terminals
under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
2. Go to
EC-413, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000010094983
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
ECM
Condition
Voltage
Con-
nector
+
–
Terminal
Terminal
F13
37
(TP sensor
1 signal)
36
(Sensor
ground)
Accelera-
tor pedal
Fully released
More than 0.36 V
Fully depressed
Less than 4.75 V
38
(TP sensor
2 signal)
Fully released
Less than 4.75 V
Fully depressed More than 0.36 V
JMBIA1864ZZ
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
EC-287
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
DTC Logic
INFOID:0000000010094984
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-
shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.
The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage)
On the 1st trip, when a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected in any one cylinder or in multiple cylinders.
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 TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-I
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Restart engine and let it idle for about 15 minutes.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
Sensor
Input signal to ECM
ECM function
Crankshaft position sensor (POS)
Engine speed
On board diagnosis of misfire
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0300
Multiple cylinder misfires detected
Multiple cylinder misfire.
• Improper spark plug
• Insufficient compression
• Incorrect fuel pressure
• The fuel injector circuit is open or shorted
• Fuel injector
• Intake air leakage
• The ignition signal circuit is open or shorted
• Lack of fuel
• Signal plate
• A/F sensor 1
• Incorrect PCV hose connection
P0301
No. 1 cylinder misfire detected
No. 1 cylinder misfires.
P0302
No. 2 cylinder misfire detected
No. 2 cylinder misfires.
P0303
No. 3 cylinder misfire detected
No. 3 cylinder misfires.
P0304
No. 4 cylinder misfire detected
No. 4 cylinder misfires.
P0305
No. 5 cylinder misfire detected
No. 5 cylinder misfires.
P0306
No. 6 cylinder misfire detected
No. 6 cylinder misfires.
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