Almera Tino V10 (2003 year). Manual — part 121
ENGINE CONTROL SYSTEM
EC-955
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Vehicle speed signal
T
R
R
T
Seat belt reminder signal
R
T
Headlamp switch signal
T
R
Flashing indicator signal
T
R
Engine cooling fan speed signal
T
R
Door switches state signal
T
R
A/C compressor signal
T
R
ABS operation signal
T
R
ABS warning lamp signal
T
R
Signals
ECM
ABS actuator and
electric unit (con-
trol unit)
Smart entrance
control unit
Combination meter
EC-956
[YD (WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
BASIC SERVICE PROCEDURE
PFP:00018
Fuel Filter
EBS0137Z
DESCRIPTION
A water draining cock is on the lower side and a priming pump for bleeding air is on the upper side.
AIR BLEEDING
Pump the priming pump to bleed air.
●
When air is bled completely, the pumping of the priming pump
suddenly becomes heavy. Stop the operation at that time.
●
If it is difficult to bleed air by the pumping of the priming pump
(the pumping of the priming pump does not become heavy), dis-
connect the fuel supply hose between the fuel filter and the fuel
gallery. Then, perform the operation described above, and make
sure that fuel comes out. (Use a pan, etc. so as not to spill fuel.
Do not let fuel get on engine and other parts.) After that, connect
the hose, then bleed air again.
●
Start engine and let it idle for at least 1 minute after performing
air bleeding.
WATER DRAINING
1.
Remove the fuel filter, filter bracket, protector assembly from the dash panel as follows.
a.
Remove the air cleaner case (upper), air duct assembly, and vacuum hose for brake booster (between the
vacuum pump and vacuum pipe).
CAUTION:
After the duct is removed, cover the opening with gum tape, etc. to prevent foreign object from
getting into the engine during the operation.
b.
Remove the mounting nuts on the dash panel, then remove the fuel filter, filter bracket, and protector
assembly from the dash panel.
●
It is not necessary to disconnect the fuel hose.
2.
Using a tool such as a pliers, loosen the water draining cock at
the bottom of the fuel filter.
Loosening drain cock four to five turns causes water to
start draining.
Do not remove drain cock by loosening it excessively.
If water dose not drain properly, move the priming up and down.
CAUTION:
When the water is drained, the fuel is also drained. Use a
pan, etc. to avoid fuel adherence to the rubber parts such as
the engine mount insulator.
Do not over-tighten the water draining cock. This will dam-
age the cock thread, resulting in water or fuel leak.
3.
Bleed air of the fuel filter. Refer to
.
4.
Start the engine.
Fuel Pump Learning Value Clearing
EBS01380
DESCRIPTION
In order to always keep optimum fuel pressure in fuel rail, the ECM controls fuel pump in high precision with
monitoring the signal of fuel rail pressure sensor.
Accordingly, the ECM always learns characteristic value of fuel pump. Fuel Pump Learning Value Clearing is
an operating to clear the value of the fuel pump learning.
It must be performed after the fuel pump is changed. When the ECM is replaced with brand new one, the Fuel
Pump Learning Value Clearing is not necessary to be performed. If the ECM to be replaced has the possibility
of learning the characteristic value of fuel pump, the Fuel Pump Learning Value Clearing is necessary to be
performed after the ECM has been replaced.
OPERATION PROCEDURE
NOTE:
Remove fuel pump without starting engine after performing Fuel Pump Learning Value Clearing.
SEF375Y
SMA825B
BASIC SERVICE PROCEDURE
EC-957
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
1.
Turn ignition switch ON.
2.
Select “PUMP LEARNT CLEAR” in “ACTIVE TEST” mode with
CONSULT-II.
3.
Touch “CLEAR” and wait a few seconds.
4.
Make sure that “CMPLT” is displayed on CONSULT-II screen.
MBIB0896E
MBIB0893E
MBIB0894E
EC-958
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ON BOARD DIAGNOSTIC (OBD) SYSTEM
PFP:00028
Introduction
EBS01381
The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actua-
tors. The ECM also records various emission-related diagnostic information including:
The above information can be checked using procedures listed in the table below.
×
: Applicable
—: Not applicable
The malfunction indicator (MI) on the instrument panel lights up when the same malfunction is detected in
three consecutive trips (Three trip detection logic).
Three Trip Detection Logic and One Trip Detection Logic
EBS01382
On board diagnosis (OBD) system of this vehicle has “Three Trip Detection Logic” and “One Trip Detection
Logic”. For which logic each self-diagnosis corresponds with, refer to
.
“Trip” of “Three Trip Detection Logic” means a driving mode in which the self-diagnosis is performed while
driving.
THREE TRIP DETECTION LOGIC
When a malfunction is detected for the first time, 1st trip DTC is stored in the ECM memory. MI does not illumi-
nate at this stage. <1st trip>
When the same malfunction is detected again during the next driving, 2nd trip DTC is stored in the ECM mem-
ory and 1st trip DTC is cleared from the ECM memory. MI does not illuminate at this stage. <2nd trip>
When the same malfunction is detected again at the third driving, DTC and Freeze Frame Data are stored in
the ECM memory and 2nd trip DTC is cleared from the ECM memory. MI illuminates at the same time when
DTC is stored. <3rd trip>
In other words, DTC and Freeze Frame Data are stored and MI illuminates when the same malfunction occurs
in 3 consecutive trips.
This is called “Three Trip Detection Logic”.
ONE TRIP DETECTION LOGIC
When a malfunction is detected for the first time, DTC and Freeze Frame Data are stored in the ECM memory
and MI lights up. This is called “One Trip Detection Logic”. Some self-diagnoses will not illuminate MI when
DTC is stored. (Refer to
EC-958, "Emission-related Diagnostic Information"
.) 1st/2nd trip DTC is not stored for
one trip detection logic.
Emission-related Diagnostic Information
EBS01383
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
X: Applicable —: Not applicable
Emission-related diagnostic information
ISO Standard
Diagnostic Trouble Code (DTC)
Mode 3 of ISO 15031-5
Freeze Frame data
Mode 2 of ISO 15031-5
1st/2nd Trip Diagnostic Trouble Code (1st/2nd Trip DTC)
Mode 7 of ISO 15031-5
Calibration ID
Mode 9 of ISO 15031-5
DTC
1st trip DTC
2nd trip DTC
Freeze Frame data
CONSULT-II
×
×
×
×
GST
×
×
×
×
Items
(CONSULT-II screen item)
DTC*
1
*
2
(CONSULT-II, GST )
1st/2nd
trip DTC
MI lighting
up
Reference page
CAN COMM CIRCUIT
U1000
—
—
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
P0000
—
—
—
CMP/CKP RELATION
P0016
×
×
TC BOOST SOL/CIRC*
3
P0045
×
×
HIGH FUEL PRESS
P0088
×
×
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-959
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
FUEL PUMP
P0089
×
×
FUEL LEAK
P0093
×
×
MAF SENSOR
P0101
×
×
MAF SEN/CIRCUIT
P0102
×
×
MAF SEN/CIRCUIT
P0103
×
×
IAT SEN/CIRCUIT
P0112
×
×
IAT SEN/CIRCUIT
P0113
×
×
ECT SEN/CIRCUIT
P0117
×
×
ECT SEN/CIRCUIT
P0118
×
×
APP SEN 1/CIRCUIT
P0122
—
—
APP SEN 1/CIRCUIT
P0123
—
—
FUEL TEMP SEN/CIRC
P0182
×
×
FUEL TEMP SEN/CIRC
P0183
×
×
FRP SEN/CIRC
P0192
×
×
FRP SEN/CIRC
P0193
×
×
INJECTOR
P0200
×
×
CYL1 INJECTOR
P0201
×
×
CYL2 INJECTOR
P0202
×
×
CYL3 INJECTOR
P0203
×
×
CYL4 INJECTOR
P0204
×
×
ENG OVER TEMP
P0217
—
×
APP SEN 2/CIRCUIT
P0222
—
—
APP SEN 2/CIRCUIT
P0223
—
—
TC SYSTEM
P0234
—
—
TC BOOST SEN/CIRC*
3
P0237
×
×
TC BOOST SEN/CIRC*
3
P0238
×
×
CKP SEN/CIRCUIT
P0335
×
×
CKP SENSOR
P0336
×
×
CMP SEN/CIRCUIT
P0340
×
×
CMP SENSOR
P0341
×
×
GLOW RELAY
P0380
×
×
EGR SYSTEM*
3
P0401
×
×
EGR VALVE
P0404
×
×
BATTERY VOLTAGE
P0563
—
—
ECM
P0605
×
×
ECM
P0606
×
×
FUEL PUMP/CIRC
P0628
×
×
FUEL PUMP/CIRC
P0629
×
×
SENSOR PWR/CIRC1
P0642
×
×
SENSOR PWR/CIRC1
P0643
×
×
SENSOR PWR/CIRC2
P0652
×
×
SENSOR PWR/CIRC2
P0653
×
×
ECM RELAY
P0686
—
—
Items
(CONSULT-II screen item)
DTC*
1
*
2
(CONSULT-II, GST )
1st/2nd
trip DTC
MI lighting
up
Reference page
EC-960
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*1: 1st trip DTC No. and 2nd trip DTC No. are the same as DTC No.
*2: This number is prescribed by ISO 15031-6.
*3: For YD22DDTi engine models
DTC AND 1ST/2ND TRIP DTC
The number of 1st/2nd trip DTC is the same as the number of DTC.
When a malfunction is detected during 1st trip, 1st trip DTC is stored in the ECM memory. MI does not illumi-
nate at this time. When the same malfunction is detected in the next trip (2nd trip), 2nd trip DTC is stored in the
ECM memory and 1st trip DTC is cleared from the ECM memory. MI does not illuminate at this time. In addi-
tion, DTC is stored in the ECM memory and Mi lights up when the same malfunction is detected during the fol-
lowing consecutive trip (3rd trip).
The procedure for erasing DTC, 1st trip DTC, and 2nd trip DTC from the ECM memory is described in
"HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
.
For malfunctions in which 1st/2nd trip DTC are displayed, Refer to
EC-958, "Emission-related Diagnostic Infor-
.
1st/2nd trip DTC is specified in Mode 7 of ISO15031-5. 1st/2nd trip DTC detection occurs without lighting up
MI and therefore does not warn the driver of a malfunction.
When 1st/2nd trip DTC is detected, check, print out or write down, and erase 1st/2nd trip DTC as specified
with step II of Work Flow, refer to
. Then perform DTC Confirmation Procedure or
Overall Function Check to try to duplicate the malfunction. If the malfunction is duplicated, it is necessary to
investigate the cause again.
How to Read DTC and 1st/2nd Trip DTC
DTC and 1st/2nd trip DTC can be read by the following procedures.
TCS C/U FUNCTN
P1211
—
—
TCS/CIRC
P1212
—
—
INJ ADJ RES/CIRC1
P1260
×
×
INJ ADJ RES/CIRC1
P1261
×
×
INJ ADJ RES/CIRC2
P1262
×
×
INJ ADJ RES/CIRC2
P1263
×
×
INJ ADJ RES/CIRC3
P1264
×
×
INJ ADJ RES/CIRC3
P1265
×
×
INJ ADJ RES/CIRC4
P1266
×
×
INJ ADJ RES/CIRC4
P1267
×
×
INJECTOR 1
P1268
—
—
INJECTOR 2
P1269
—
—
INJECTOR 3
P1270
—
—
INJECTOR 4
P1271
—
—
FRP RELIEF VALVE
P1272
×
×
FUEL PUMP
P1273
×
×
FUEL PUMP
P1274
—
×
FUEL PUMP
P1275
—
×
NATS MALFUNTION
P1610 - P1617
—
—
APP SENSOR
P2135
—
—
INJ PWR/CIRC
P2146
×
×
INJECTOR/CIRC
P2147
×
×
INJECTOR/CIRC
P2148
×
×
INJ PWR/CIRC
P2149
×
×
BARO SEN/CIRC
P2228
×
×
BARO SEN/CIRC
P2229
×
×
Items
(CONSULT-II screen item)
DTC*
1
*
2
(CONSULT-II, GST )
1st/2nd
trip DTC
MI lighting
up
Reference page
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-961
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
With CONSULT-II
With GST
ONSULT-II or GST (Generic Scan Tool): Examples: P0117, P0335, P1260, etc.
These numbers are prescribed by ISO 15031-6.
(CONSULT-II also displays the malfunctioning parts and systems.)
A sample of CONSULT-II display for DTC and 1st/2nd trip DTC is
shown in the figure. DTC and 1st/2nd trip DTC are displayed in the
“SELF-DIAG RESULTS” mode of CONSULT-II.
“TIME” data shows how many times the vehicle was driven after the
last detection of DTC or 1st/2nd trip DTC. When DTC or 1st/2nd trip
DTC has been detected currently, “TIME” becomes “0”.
●
CONSULT-II displays for DTC and 1st/2nd trip DTC become the
same.
●
The output of a DTC indicates a malfunction. However, GST
does not indicate whether the malfunction is still occurring or
has occurred in the past and has returned to normal. CONSULT-
II can identify the malfunction status. Therefore the use of CON-
SULT-II (If available) is recommended.
FREEZE FRAME DATA
ECM records driving conditions such as calculated load value, engine coolant temperature, engine speed,
vehicle speed, and intake manifold pressure at the moment a malfunction is detected.
The data stored together with DTC is called Freeze Frame Data, and is displayed on CONSULT-II or GST.
When 1st/2nd trip DTC is detected, Freeze Frame Data is not recorded.
Only a set of Freeze Frame Data can be stored in the ECM memory. When ECM records Freeze Frame Data,
and another Freeze Frame Data is generated after that, the first (original) Freeze Frame Data is not updated in
ECM and it remains.
When the DTC is erased from ECM memory, Freeze Frame Data is erased with DTC. The procedure for eras-
ing DTC is described in
.
HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
With CONSULT-II
The emission related diagnostic information in the ECM can be erased by selecting “ERASE” in the “SELF-
DIAG RESULTS” mode with CONSULT-II.
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2.
Touch “ENGINE”.
3.
Touch “SELF-DIAG RESULTS”.
PBIB2022E
EC-962
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
4.
Touch “ERASE”. (The DTC in the ECM will be erased.)
With GST
The emission related diagnostic information in the ECM can be erased by selecting MODE 4 with GST.
1.
If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 5
seconds and then turn it ON (engine stopped) again.
2.
Select MODE 4 with GST (Generic Scan Tool).
●
If the battery is disconnected, the emission-related diagnostic information will be lost within 24
hours.
●
The following data are cleared when the ECM memory is erased.
–
Diagnostic trouble codes
–
1st trip diagnostic trouble codes
–
2nd trip diagnostic trouble codes
–
Freeze frame data
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
NATS (Nissan Anti-theft System)
EBS01384
●
If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to EL-352, “NATS (NISSAN ANTI-THEFT SYSTEM)”.
●
Confirm no self-diagnostic results of NATS is displayed
before touching “ERASE” in “SELF-DAIG RESULTS” mode
with CONSULT-II.
●
When replacing ECM, initialization of NATS system and reg-
istration of all NATS ignition key IDs must be carried out
with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner.
Regarding the procedure of NATS initialization and NATS ignition key ID registration, refer to CON-
SULT-II operation manual, NATS.
MBIB0895E
SEF543X
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-963
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Malfunction Indicator (MI)
EBS01385
DESCRIPTION
The MI is located on the instrument panel.
1.
The MI will light up when the ignition switch is turned ON without
the engine running. This is a bulb check.
●
If the MI does not light up, refer to EL-115, “WARNING
LAMPS” or see
EC-1250, "MI & DATA LINK CONNECTORS"
.
2.
When the engine is started, the MI should go off.
If the MI remains on, the on board diagnostic system has
detected an engine system malfunction.
On Board Diagnostic System Function
The on board diagnostic system has the following two functions.
Diagnostic Test Mode I - Bulb Check
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to EL-
115, “WARNING LAMPS” or see
EC-1250, "MI & DATA LINK CONNECTORS"
.
Diagnostic Test Mode I - Malfunction Warning
SAT652J
Diagnostic Test
Mode
KEY and ENG.
Status
Function
Explanation of Function
Mode I
Ignition switch in
ON position
Engine stopped
BULB CHECK
This function checks the MI bulb for damage (blown, open
circuit, etc.).
If the MI does not come on, check MI circuit. (See
1250, "MI & DATA LINK CONNECTORS"
.)
Engine running
MALFUNCTION
WARNING
This is a usual driving condition. When ECM detects a mal-
function, the MI will light up to inform the driver that a mal-
function has been detected.
MI
Condition
ON
When the malfunction is detected or the ECM's CPU is malfunctioning.
OFF
No malfunction.
EC-964
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
OBD System Operation Chart
EBS01386
RELATIONSHIP BETWEEN MI, 1ST/2ND TRIP DTC, DTC, AND DETECTABLE ITEMS
●
When the malfunction is detected for the first time, 1st trip DTC is stored in the ECM memory.
●
When the same malfunction is detected during 2nd consecutive trip, 2nd trip DTC is stored and 1st trip
DTC is cleared.
●
When the same malfunction is detected during 3rd consecutive trip, DTC and Freeze Frame Data are
stored and MI illuminates. Refer to
EC-958, "Three Trip Detection Logic and One Trip Detection Logic"
for
details.1st/2nd trip DTC are cleared from the ECM memory.
●
MI will go off after the vehicle is driven 3 consecutive times with no malfunction (driving pattern A).
●
1st/2nd trip DTC, DTC, and Freeze Frame Data will be stored until the vehicle is driven 41 times (driving
pattern B) without the same malfunction recurring. “TIME” data displayed in the “SELF-DIAG RESULTS”
mode of CONSULT-II shows the number of times the vehicle is driven without the same malfunction recur-
ring.
SUMMARY CHART
Refer to
for details of pattern A and B.
Items
Trip
Counter
Driving Pattern
MI (goes off)
3
2
A
DTC, Freeze Frame Data (clear)
41
40
B
1st/2nd Trip DTC (clear)
41
40
B
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-965
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
RELATIONSHIP BETWEEN MI, DTC, 1ST/ 2NDTRIP DTC AND DRIVING PATTERNS
*1: CONSULT-II displays for DTC and
1st/2nd trip DTC become the same.
*2: 1st/2nd trip DTC becomes the same
display in mode7 of GST.
*3: When the same malfunction is
detected in three consecutive trips,
MI will light up.
*4: MI will go off after vehicle is driven 3
times (pattern A) without any mal-
functions.
*5: When the malfunction is detected for
the first time, 1st trip DTC is stored in
the ECM memory.
*6: When the same malfunction is
detected during 2nd consecutive trip,
2nd trip DTC is stored and 1st trip
DTC is cleared.
*7: When the same malfunction is
detected during 3rd consecutive trip,
DTC and Freeze Frame Data are
stored.
*8: The DTC and the freeze frame data
will not be displayed any longer after
vehicle is driven 41 times (pattern B)
without the same malfunction.
PBIB2048E
EC-966
[YD (WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
<Driving Pattern A>
Driving pattern A means the vehicle operation as follows:
Engine speed should go over 500 rpm at least 5 seconds and the DTC Confirmation Procedure is performed.
●
The A counter will be cleared when the same malfunction is detected.
●
The A counter will be counted up when the same malfunction is not detected.
●
The MI will go off when the A counter reaches 3.
<Driving Pattern B>
Driving pattern B means the vehicle operation as follows:
Driving pattern A and (1)-(3) are satisfied.
●
The B counter will be cleared when the same malfunction is detected.
●
The B counter will be counted up when the same malfunction is not detected.
●
The DTC will not be displayed after the B counter reaches 40.
PBIB2049E
TROUBLE DIAGNOSIS
EC-967
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
TROUBLE DIAGNOSIS
PFP:00004
Trouble Diagnosis Introduction
EBS01387
INTRODUCTION
The engine has an ECM to control major systems such as fuel injec-
tion control, fuel injection timing control, glow control system, etc.
The ECM accepts input signals from sensors and instantly actuators.
It is essential that both input and output signals are proper and sta-
ble. At the same time, it is important that there are no malfunctions
such as vacuum leaks, or other malfunctions with the engine.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II or a circuit tester connected should be per-
formed. Follow the
.
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on next page should be used.
Start your diagnosis by looking for conventional incidents first. This
will help troubleshoot driveability incidents on an electronically con-
trolled engine vehicle.
MEF036D
SEF233G
SEF234G
EC-968
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
WORK FLOW
*1
If time data of “SELF-DIAG
RESULTS” is other than “0”, perform
EC-1002, "TROUBLE DIAGNOSIS
FOR INTERMITTENT INCIDENT"
.
*2
If the incident cannot be verified, per-
form
SIS FOR INTERMITTENT
INCIDENT"
.
*3
If the on board diagnostic system
cannot be performed, check main
power supply and ground circuit.
Refer to
.
*4
If malfunctioning part cannot be
detected, perform
BLE DIAGNOSIS FOR INTERMIT-
TENT INCIDENT"
.
PBIB2047E
TROUBLE DIAGNOSIS
EC-969
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Description for Work Flow
DIAGNOSTIC WORK SHEET
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about an incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one shown below in order to
organize all the information for troubleshooting.
STEP
DESCRIPTION
STEP I
Get detailed information about the conditions and the environment when the incident/symptom occurred using the
EC-969, "DIAGNOSTIC WORK SHEET"
.
STEP II
Before confirming the concern, check and write down (print out using CONSULT-II or GST) the (1st/2nd trip) DTC and
the freeze frame data (When 1st/2nd trip DTC is detected, Freeze Frame Data is not recorded.), then erase the DTC
and the data. (Refer to
EC-961, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
.) The (1st/
2nd trip) DTC and the freeze frame data can be used when duplicating the incident at STEP III & IV.
If the incident cannot be verified, perform
EC-1002, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
Study the relationship between the cause, specified by (1st/2nd trip) DTC, and the symptom described by the cus-
tomer. (The Symptom Matrix Chart will be useful. See
.)
Also check related service bulletins for information.
STEP III
Try to confirm the symptom and under what conditions the incident occurs.
The DIAGNOSTIC WORK SHEET and the freeze frame data are useful to verify the incident. Connect CONSULT-II
to the vehicle in “DATA MONITOR (AUTO TRIG)” mode and check real time diagnosis results.
If the incident cannot be verified, perform
EC-1002, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
If the malfunction code is detected, skip STEP IV and perform STEP V.
STEP IV
Try to detect the (1st/2nd trip) DTC by driving in (or performing) the DTC Confirmation Procedure. Check and read
the (1st/2nd trip) DTC and freeze frame data by using CONSULT-II or GST.
During the (1st/2nd trip) DTC verification, be sure to connect CONSULT-II to the vehicle in “DATA MONITOR (AUTO
TRIG)” mode and check real time diagnosis results.
If the incident cannot be verified, perform
EC-1002, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
In case the DTC Confirmation Procedure is not available, perform the Overall Function Check instead. The (1st/2nd
trip) DTC cannot be displayed by this check, however, this simplified check is an effective alternative.
The NG result of the Overall Function Check is the same as the (1st/2nd trip) DTC detection.
STEP V
Take the appropriate action based on the results of STEP I through IV.
If the malfunction code is indicated, proceed to TROUBLE DIAGNOSIS FOR DTC PXXXX.
If the normal code is indicated, proceed to the BASIC INSPECTION. (Refer to
.)Then perform inspections
according to the Symptom Matrix Chart. (Refer to
.)
STEP VI
Identify where to begin diagnosis based on the relationship study between symptom and possible causes. Inspect the
system for mechanical binding, loose connectors or wiring damage using (tracing) Harness Layouts.
Gently shake the related connectors, components or wiring harness with CONSULT-II set in “DATA MONITOR
(AUTO TRIG)” mode.
Check the voltage of the related ECM terminals or monitor the output data from the related sensors with CONSULT-II.
Refer to
EC-984, "ECM Terminals And Reference Value"
,
EC-999, "CONSULT-II Reference Value in Data Monitor
.
The Diagnostic Procedure in EC section contains a description based on open circuit inspection. A short circuit
inspection is also required for the circuit check in the Diagnostic Procedure. For details, refer to Circuit Inspection in
GI-21, “HOW TO PERFOPRM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT”.
Repair or replace the malfunction parts.
If malfunctioning part cannot be detected, perform
EC-1002, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
.
STEP VII
Once you have repaired the circuit or replaced a component, you need to run the engine in the same conditions and
circumstances which resulted in the customer's initial complaint.
Perform the DTC Confirmation Procedure and confirm the normal code [DTC No. P0000] is detected. If the incident is
still detected in the final check, perform STEP VI by using a method different from the previous one.
Before returning the vehicle to the customer, be sure to erase the unnecessary (already fixed) (1st/2nd trip) DTC in
ECM. (Refer to
EC-961, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"
.)
SEF907L
EC-970
[YD (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
Worksheet Sample
DTC Inspection Priority Chart
EBS01388
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-1011, "DTC U1000 CAN COMMUNICATION LINE"
.
MTBL0533
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст