Nissan March K13. Instruction — part 181
P0172 FUEL INJECTION SYSTEM FUNCTION
EC-185
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2.
Listen to each fuel injector operating sound.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Perform trouble diagnosis for FUEL INJECTOR. Refer
to
EC-285, "Component Function Check"
.
8.
CHECK FUELINJECTOR
1.
Remove fuel injector assembly. Refer to
.
Keep fuel hose and all fuel injectors connected to fuel tube.
2.
Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3.
Disconnect all fuel injector harness connectors.
4.
Disconnect all ignition coil harness connectors.
5.
Prepare pans or saucers under each fuel injectors.
6.
Crank engine for about 3 seconds.
Make sure fuel does not drip from fuel injector.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace the fuel injectors from which fuel is dripping. Always replace O-ring with new one. Refer
to
.
9.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-33, "Intermittent Incident"
.
>> Repair or replace malfunctioning part.
Clicking noise should be heard.
PBIB3332E
EC-186
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
P0222, P0223 TP SENSOR
P0222, P0223 TP SENSOR
DTC Logic
INFOID:0000000005989283
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 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 more than 10 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:0000000005989284
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 THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between electric throttle control actuator harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or 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.
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
(TP sensor 1 circuit is open or shorted.)
• Electric throttle control actuator
(TP sensor 1)
P0223
Throttle position sensor
1 circuit high input
An excessively high voltage from the TP sensor
1 is sent to ECM.
Electric throttle control actuator
Ground
Voltage
Connector
Terminal
F29
1
Ground
Approx. 5 V
P0222, P0223 TP SENSOR
EC-187
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
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 THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
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 or short to ground or short to power in harness or connectors.
5.
CHECK THROTTLE POSITION SENSOR
Check throttle position sensor. Refer to
EC-187, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace electric throttle control actuator. Refer to
EM-29, "WITH EGR CONTROL VALVE :
.
6.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-33, "Intermittent Incident"
.
>> Repair or replace malfunctioning part.
Component Inspection
INFOID:0000000005989285
1.
CHECK THROTTLE POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
.
4.
Turn ignition switch ON.
5.
Set selector lever to 1st position.
6.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F29
4
F8
36
Existed
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F29
2
F8
33
Existed
ECM
Condition
Voltage
Connector
+
−
Terminal
Terminal
F16
33
(TP sensor 1 signal)
36
Accelerator pedal
Fully released
More than 0.36 V
Fully depressed
Less than 4.75 V
34
(TP sensor 2 signal)
Fully released
Less than 4.75 V
Fully depressed
More than 0.36 V
EC-188
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
P0222, P0223 TP SENSOR
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-29, "WITH EGR CONTROL VALVE :
.
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