2003 NISSAN ALMERA N16 ecm

EC-350
[QG (WITH EURO-OBD)]
DTC P1227, P1228 APP SENSOR
6. CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 98 and APP sensor terminal 6.
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-350, "
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 InspectionEBS00KC8
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

EC-352
[QG (WITH EURO-OBD)]
DTC P1229 SENSOR POWER SUPPLY
DTC P1229 SENSOR POWER SUPPLY
PFP:16119
On Board Diagnosis LogicEBS00KCA
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00KCB
NOTE:
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 8V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-354, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1229
1229Sensor power supply circuit
shortECM detects a voltage of power source
for sensor is excessively low or high.
●Harness or connectors
(The TP sensor 1 and 2 circuit is shorted.)
●Electric throttle control actuator
(TP sensor 1 and 2)
Engine operation condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF058Y

EC-354
[QG (WITH EURO-OBD)]
DTC P1229 SENSOR POWER SUPPLY
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 ProcedureEBS00KCD
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch “ON”.
3. Check voltage between electric throttle control actuator terminal
1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
47 GSensor power supply
(Throttle position sensor) [Ignition switch “ON”]Approximately 5V
MBIB0095E
MBIB0254E
Voltage: Approximately 5V
PBIB0082E

DTC P1229 SENSOR POWER SUPPLY
EC-355
[QG (WITH EURO-OBD)]
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3.CHECK SENSOR POWER SUPPLY CIRCUITS FOR SHORT
Check the following.
●Harness for short to power and short to ground between ECM terminal 47 and electric throttle control
actuator terminal 1.
●ECM pin terminal.
OK or NG
OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors.
4.CHECK THROTTLE POSITION SENSOR
Refer to EC-204, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Perform EC-31, "
Throttle Valve Closed Position Learning" .
3. Perform EC-31, "
Idle Air Volume Learning" .
>>INSPECTION END
6.CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

EC-356
[QG (WITH EURO-OBD)]
DTC P1706 PNP SWITCH
DTC P1706 PNP SWITCH
PFP:32006
Component DescriptionEBS00KCE
When the shift lever position is “P” (A/T models only) or “N”, park/neutral position (PNP) switch is “ON”.
ECM detects the position because the continuity of the line (the “ON” signal) exists.
CONSULT-II Reference Value in Data Monitor ModeEBS00KCF
Specification data are reference values.
On Board Diagnosis LogicEBS00KCG
DTC Confirmation ProcedureEBS00KCH
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to EC-359, "
Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 60 consecutive sec-
onds.
6. If 1st trip DTC is detected, go to EC-359, "
Diagnostic Procedure"
.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW
●Ignition switch: ONShift lever:
P or N (A/T models)
Neutral (M/T models)ON
Shift lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1706
1706Park/neutral position switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of
engine starting and driving.
●Harness or connectors
(PNP switch circuit is open or shorted.)
●Park/neutral position (PNP) switch
Position (Selector lever) Known-good signal
“P” (A/T models only) and “N” position ON
Except the above position OFF
ENG SPEED 1,200 - 6,000 rpm (A/T models)
1,300 - 6,000 rpm (M/T models)
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL More than 3.0 msec
VHCL SPEED SE More than 46 km/h (30 MPH)
Selector lever Suitable position
SEF212Y
SEF213Y

DTC P1706 PNP SWITCH
EC-357
[QG (WITH EURO-OBD)]
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Overall Function CheckEBS00KCI
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH GST
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 102 (PNP switch signal)
and body ground under the following conditions.
3. If NG, go to EC-359, "
Diagnostic Procedure" .
Condition (Gear position) Voltage V (Known-good data)
“P” (A/T models only) and “N” position Approximately 0
Except the above positionA/T models: Battery voltage
M/T models: Approximately 5
MBIB0029E

DTC P1706 PNP SWITCH
EC-359
[QG (WITH EURO-OBD)]
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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 ProcedureEBS00KCK
1.CHECK PNP SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect PNP switch harness connector.
3. Check harness continuity between PNP switch terminal 2 and
body ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to power in harness or con-
nectors.
2.CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 102 and PNP switch 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 PNP SWITCH
Refer to AT- 111 , "
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH" (A/T models) or MT-21 (M/T
models).
OK or NG
OK >> GO TO 4.
NG >> Replace PNP switch.
4.CHECK INTERMITTENT INCIDENT
Refer to EC-109, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
102P (A/T)
G/OR (M/T)PNP switch[Ignition switch “ON”]
●Shift lever position is “P” or “N” (A/T models).
●Shift lever position is ″Neutral″ (M/T models).Approximately 0V
[Ignition switch “ON”]
●Except the above gear positionA/T models
BATTERY VOLTAGE
(11 - 14V)
M/T models
Approximately 5V
Continuity should exist.
MBIB0253E
Continuity should exist.

EC-360
[QG (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
DTC P1805 BRAKE SWITCH
PFP:25320
DescriptionEBS00KCL
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
CONSULT-II Reference Value in Data Monitor ModeEBS00KCM
Specification data are reference values.
On Board Diagnosis LogicEBS00KCN
The MI will not light up for this self-diagnosis.
FALI-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00KCO
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If 1st trip DTC is detected, go to EC-362, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW
●Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805
1805Brake switchA brake switch signal is not sent to ECM for
an extremely long time while the vehicle is
driving.
●Harness or connectors
(Stop lamp switch circuit is open or shorted.)
●Stop lamp switch
Engine operating condition in fail-safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Driving condition
When engine is idling Normal
When accelerating Poor acceleration
SEF058Y