Nissan March K13. Instruction — part 204
P2138 APP SENSOR
EC-277
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
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EC
N
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1.
Check the continuity between APP sensor harness connector and ECM harness connector as follows.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair open circuit or short to ground or shot to power in harness or connectors.
8.
CHECK APP SENSOR
Check app sensor. Refer to
EC-277, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace accelerator pedal assembly. Refer to
9.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-33, "Intermittent Incident"
.
>> Repair or replace malfunctioning part.
Component Inspection
INFOID:0000000005989374
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Turn ignition switch ON.
3.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
APP sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E110
3
E18
110
Existed
6
103
ECM
Condition
Voltage
Connector
+
−
Terminal
Terminal
E16
110
(APP sensor 1 signal)
111
Accelerator
pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
103
(APP sensor 2 signal)
104
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
EC-278
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
P2A00 A/F SENSOR 1
P2A00 A/F SENSOR 1
DTC Logic
INFOID:0000000005989376
DTC DETECTION LOGIC
To judge the malfunction, the A/F signal computed by ECM from the A/F sensor 1 signal is monitored so it will
not shift to LEAN side or RICH side.
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 11 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Clear the mixture ratio self-learning value. Refer to
.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Restart engine and keep the engine speed between 3,500 and 4,000 rpm for 1 minute under no load.
4.
Let engine idle for 1 minute.
5.
Keep engine speed between 2,500 and 3,000 rpm for 20 minutes.
6.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005989377
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.
RETIGHTEN A/F SENSOR 1
Loosen and retighten the A/F sensor 1. Refer to
>> GO TO 3.
3.
CHECK FOR INTAKE AIR LEAK
1.
Start engine and run it at idle.
2.
Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES
>> Repair or replace.
NO
>> GO TO 4.
4.
CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible Cause
P2A00
Air fuel ratio (A/F) sensor 1
circuit range/performance
• The output voltage computed by ECM from the A/F
sensor 1 signal shifts to the lean side for a specified
period.
• The A/F signal computed by ECM from the A/F sensor
1 signal shifts to the rich side for a specified period.
• A/F sensor 1
• A/F sensor 1 heater
• Fuel pressure
• Fuel injector
• Intake air leaks
P2A00 A/F SENSOR 1
EC-279
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1.
Clear the mixture ratio self-learning value. Refer to
.
2.
Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
YES
>> Perform trouble diagnosis for DTC P0171 or P0172. Refer to
.
NO
>> GO TO 5.
5.
CHECK HARNESS CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect A/F sensor 1 harness connector.
3.
Check harness connector for water.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness connector.
6.
CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check the voltage between A/F sensor 1 harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F1
• IPDM E/R harness connector E15
• 15A fuse (No. 61)
• Harness for open or short between A/F sensor 1 and fuse
>> Repair or replace harness or connectors.
8.
CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
4.
Check the continuity between A/F sensor 1 harness connector and ground or ECM harness connector
and ground.
Water should not exit.
A/F sensor 1
Ground
Voltage
Connector
Terminal
F50
4
Ground
Battery voltage
A/F sensor 1
ECM
Continuity
Connector
Terminal
Connector
Terminal
F50
1
F102
49
Existed
2
57
A/F sensor 1
Ground
Continuity
Connector
Terminal
F50
1
Ground
Not existed
2
EC-280
< DTC/CIRCUIT DIAGNOSIS >
[HR12DE (TYPE 1)]
P2A00 A/F SENSOR 1
5.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
9.
CHECK A/F SENSOR 1 HEATER
EC-132, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 11.
10.
CHECK INTERMITTENT INCIDENT
Perform
GI-33, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace.
11.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace 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 Oxygen Sensor Thread
Cleaner (commercial service tool) and approved anti-seize lubricant (commercial service tool).
>> GO TO 12.
12.
CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE
Clear the mixture ratio self-learning value. Refer to
>> INSPECTION END
ECM
Ground
Continuity
Connector
Terminal
F8
49
Ground
Not existed
57
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