Nissan Almera Tino V10. Instruction — part 315
EC-86
[QG (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
●
When there is an open circuit on MI circuit, the ECM can not warn the driver by lighting up MI 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 has trouble and MI circuit is open by
means of operating fail-safe function.
The fail-safe function also operate when above diagnoses except MI circuit are detected and demands
the driver to repair the trouble.
P0117
P0118
Engine coolant tempera-
ture sensor circuit
Engine 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.
Condition
Engine coolant temperature decided (CONSULT-
II display)
Just as ignition switch is turned
ON or Start
40
°
C (104
°
F)
More than approx. 4 minutes after
ignition ON or Start
80
°
C (176
°
F)
Except as shown above
40 - 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
P1224
Throttle 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
P1228
Accelerator pedal 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.
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-
tion
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1124
P1126
Throttle 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 motor
ECM 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
TROUBLE DIAGNOSIS
EC-87
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
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K
L
M
A
EC
Basic Inspection
EBS00QGY
1.
INSPECTION START
1.
Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2.
Open engine hood and check the following:
–
Harness connectors for improper connections
–
Wiring harness for improper connections, pinches and cut
–
Vacuum hoses for splits, kinks and improper connections
–
Hoses and ducts for leaks
–
Air cleaner clogging
–
Gasket
3.
Confirm that electrical or mechanical loads are not applied.
–
Headlamp switch is OFF.
–
Air conditioner switch is OFF.
–
Rear window defogger switch is OFF.
–
Steering wheel is in the straight-ahead position, etc.
4.
Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5.
Run engine at about 2,000 rpm for about 2 minutes under no-
load.
6.
Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding “Diagnostic Procedure”.
>> GO TO 3.
SEF983U
SEF976U
SEF977U
EC-88
[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 or three times under no-
load, then run engine at idle speed for about 1 minute.
3.
Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without 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 or three times under no-load, then run engine at idle speed for about
1 minute.
3.
Check idle speed.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 4.
4.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-49, "Accelerator Pedal Released Position Learning"
.
>> GO TO 5.
5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-49, "Throttle Valve Closed Position Learning"
.
>> GO TO 6.
SEF978U
M/T: 700
±
50 rpm (in“Neutral” position)
A/T: 800
±
50 rpm (in “P” or “N” position)
SEF058Y
M/T: 700
±
50 rpm (in “Neutral” position)
A/T: 800
±
50 rpm (in “P” or “N” position)
TROUBLE DIAGNOSIS
EC-89
[QG (WITH EURO-OBD)]
C
D
E
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A
EC
6.
PERFORM IDLE AIR VOLUME LEARNING
Refer to
EC-49, "Idle Air Volume Learning"
.
Yes or No
Yes
>> GO TO 7.
No
>> 1. Follow the construction of “Idle Air Volume Learning”.
2. GO TO 4.
7.
CHECK TARGET IDLE SPEED AGAIN
With CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Without CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Check idle speed.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Check camshaft position sensor (PHASE) and circuit. Refer to
.
●
Check crankshaft position sensor (POS) and circuit. Refer to
.
OK or NG
OK
>> GO TO 9.
NG
>> 1. Repair or replace.
2. GO TO 4.
9.
CHECK ECM FUNCTION
1.
Substitute another known-good ECM to check ECM function. (ECM may be the cause of a incident, but
this is the rarely the case.)
2.
Perform initialization of NATS system and registration of NATS ignition key IDs. Refer to
.
>> GO TO 4.
Is Idle Air Volume Learning carried out successfully?
M/T: 700
±
50 rpm (in “Neutral” position)
A/T: 800
±
50 rpm (in “P” or “N” position)
M/T: 700
±
50 rpm (in “Neutral” position)
A/T: 800
±
50 rpm (in “P” or “N” position)
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