2003 NISSAN ALMERA N16 Electronic Repair Manual

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Page 393 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
EC-63
[QG (WITH EURO-OBD)]
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EC
Fail-safe ChartEBS00K3N
●When the DTC listed below is detected, the ECM enters fail-safe mode and the MI lights up.
Priority De

Page 394 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-64
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
●When there is an open circuit on MI circuit, the ECM cannot warn the driver by lighting MI up when there
is malfunction on engine control system.
Theref

EC-64
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
●When there is an open circuit on MI circuit, the ECM cannot warn the driver by lighting MI up when there
is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected
as NG for 5 trips, ECM warns the driver that engine control system malfunctions and MI circuit is open by
means of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MI circuit and demands the driver to
repair the trouble.
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch “ON” or “START”.
CONSULT-II displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided (CONSULT-
II display)
Just as ignition switch is turned
ON or Start40°C (104°F)
More than approx. 4 minutes after
ignition ON or Start80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cool-
ing fan operates while engine is running.
P0221
P0222
P0223
P1223
P1224Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening
in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the nor-
mal condition.
So, the acceleration will be poor.
P0226
P0227
P0228
P1227
P1228Accelerator pedal position
sensorThe ECM controls the electric throttle control actuator in regulating the throttle opening
in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the nor-
mal condition.
So, the acceleration will be poor.
P1121 Electric throttle control actu-
ator
(ECM detect the throttle
valve is stuck open.)While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in “N” or “P” position, and engine speed will not exceed 1,000
rpm or more.
P1122 Electric throttle control func-
tionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1124
P1126Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1128
Throttle control motorECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring
P1229 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring. DTC No. Detected items Engine operating condition in fail-safe mode
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

Page 395 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
EC-65
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EC
Basic InspectionEBS00K3O
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfuncti

Page 396 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-66
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
3. CHECK TARGET IDLE SPEED
With CONSULT-II
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Rev engine (2,000 to 3,000 rpm) two

Page 397 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
EC-67
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6.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-31, "
Idle Air Volume Learning" .
Ye s o r N o
Ye s > > G O T O 7

Page 398 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-68
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
10. CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END
NG >> GO TO 11.
11 . PERFORM A

Page 399 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual TROUBLE DIAGNOSIS
EC-69
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15.CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
OK or NG
OK >>INSPECTION END

Page 400 of 3189

NISSAN ALMERA N16 2003 Electronic Repair Manual EC-70
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
Symptom Matrix Chart
EBS00K3P
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGI

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