2003 NISSAN ALMERA N16 DIAGRAM

EC-222
[QG (WITH EURO-OBD)]
DTC P0227, P0228 APP SENSOR
2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch “ON”.
3. Check voltage between APP sensor terminal 2 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M202, F115
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 82 and APP sensor terminal 4.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M202, F115
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
MBIB0152E
Voltage: Approximately 5V
PBIB0811E
Continuity should exist.

DTC P0227, P0228 APP SENSOR
EC-223
[QG (WITH EURO-OBD)]
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6.CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 106 and APP sensor terminal 3.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M202, F115
●Harness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK APP SENSOR
Refer to EC-223, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9.REPLACE APP SENSOR
1. Replace the accelerator pedal position sensor.
2. Perform EC-31, "
Accelerator Pedal Released Position Learning" .
3. Perform EC-31, "
Throttle Valve Closed Position Learning" .
4. Perform EC-31, "
Idle Air Volume Learning" .
>>INSPECTION END
10.CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00K7S
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch “ON”.
3. Check voltage between ECM terminals 106 (APP sensor 1 sig-
nal), 98 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.Continuity should exist.
Terminal Accelerator pedal Voltage
106
(Accelerator pedal position
sensor 1)Fully released 0.35 - 0.67V
Fully depressed More than 3.9V
98
(Accelerator pedal position
sensor 2)Fully released 0.175 - 0.335V
Fully depressed More than 1.95V
MBIB0023E

DTC P0327, P0328 KS
EC-231
[QG (WITH EURO-OBD)]
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Wiring DiagramEBS00K80
YEC290A

EC-232
[QG (WITH EURO-OBD)]
DTC P0327, P0328 KS
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS00K81
1. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-I
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check resistance between ECM terminal 15 and engine ground. Refer to Wiring Diagram.
NOTE:
It is necessary to use an ohmmeter which can measure more than 10 MΩ.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-II
1. Disconnect knock sensor harness connector.
2. Check harness continuity between ECM terminal 15 and knock
sensor terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK KNOCK SENSOR
Refer to EC-233, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace knock sensor.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
15 W Knock sensor[Engine is running]
●Idle speedApproximately 2.5V
54 —Sensor ground
(Knock sensor shield circuit)[Engine is running]
●Idle speedApproximately 0V
Resistance: Approximately 530 - 590kΩ [at 20°C (68°F)]
Continuity should exist.
MBIB0102E

DTC P0335 CKP SENSOR (POS)
EC-235
[QG (WITH EURO-OBD)]
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Wiring DiagramEBS00K88
YEC291A

DTC P0335 CKP SENSOR (POS)
EC-237
[QG (WITH EURO-OBD)]
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2.CHECK CKP SENSOR (POS) POWER SUPPLY CIRCUIT
1. Disconnect crankshaft position (CKP) sensor (POS) harness
connector.
2. Turn ignition switch “ON”.
3. Check voltage between CKP sensor (POS) terminal 3 and
ground with CONSULT-II or tester.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E225, F43
●Harness for open or short between crankshaft position sensor (POS) and ECM
●Harness for open or short between crankshaft position sensor (POS) and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK CKP SENSOR (POS) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 30 and CKP sensor (POS) terminal 1
Refer to Wiring Diagram.
4. Also check harness for and short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
MBIB0255E
Voltage: Battery voltage
SEF509Y
Continuity should exist.

EC-238
[QG (WITH EURO-OBD)]
DTC P0335 CKP SENSOR (POS)
5. CHECK CKP SENSOR (POS) INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 13 and CKP sensor (POS) terminal 2.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-238, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace crankshaft position sensor (POS).
7. CHECK GEAR TOOTH
Visually check for chipping signal plate gear tooth.
OK or NG
OK >> GO TO 8.
NG >> Replace the signal plate.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00K8A
CRANKSHAFT POSITION SENSOR (POS)
1. Loosen the fixing bolt of the sensor.
2. Disconnect crankshaft position sensor (POS) harness connector.
3. Remove the sensor.
4. Visually check the sensor for chipping.Continuity should exist.
PBIB0563E

DTC P0340 CMP SENSOR (PHASE)
EC-241
[QG (WITH EURO-OBD)]
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Wiring DiagramEBS00K8F
YEC292A