Almera Tino V10 (2003 year). Manual — part 98
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-587
[QG (WITHOUT EURO-OBD)]
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EC
A particular trouble code can be identified by the number of four-digit numeral flashes. The “zero” is indicated
by the number of ten flashes. The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds
consisting of an ON (0.6-second) - OFF (0.6-second) cycle.
The 100th-digit numeral and lower digit numerals consist of a 0.3-second ON and 0.3-second OFF cycle.
A change from one digit numeral to another occurs at an interval of 1.0-second OFF. In other words, the later
numeral appears on the display 1.3 seconds after the former numeral has disappeared.
A change from one trouble code to another occurs at an interval of 1.8-second OFF.
In this way, all the detected malfunctions are classified by their DTC numbers. The DTC “0000” refers to no
malfunction. (See
)
How to Erase Diagnostic Test Mode II (Self-diagnostic Results)
The DTC can be erased from the back up memory in the ECM by depressing accelerator pedal. Refer to
585, "HOW TO SWITCH DIAGNOSTIC TEST MODE"
.
●
If the battery is disconnected, the DTC will be lost from the backup memory after approx 24 hours.
●
Be careful not to erase the stored memory before starting trouble diagnoses.
DIAGNOSTIC TEST MODE II — HEATED OXYGEN SENSOR 1 MONITOR
In this mode, the MI displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1.
*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 function, start engine in the Diagnostic Test Mode II and warm it up until
engine coolant temperature indicator points to the middle of the gauge.
Next run engine at about 2,000 rpm for about 2 minutes under no-load conditions. Then make sure that the MI
comes ON more than 5 times within 10 seconds with engine running at 2,000 rpm under no-load.
MI
Fuel mixture condition in the exhaust gas
Air fuel ratio feedback control condition
ON
Lean
Closed loop system
OFF
Rich
*Remains ON or OFF
Any condition
Open loop system
EC-588
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TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
PFP:00004
Trouble Diagnosis Introduction
EBS00QV6
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose a incident that occurs intermit-
tently rather than continuously. Most intermittent incidents 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 “Work Flow” on
.
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 exam-
ple on
should be used.
Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF233G
SEF234G
TROUBLE DIAGNOSIS
EC-589
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WORK FLOW
Flow Chart
*1
If time data of “SELF-DIAG
RESULTS” is other than “0” or “[1t]”,
perform
NOSIS FOR INTERMITTENT INCI-
DENT"
.
*2
If time data of “SELF-DIAG
RESULTS” is other than “0” or “[1t]”,
perform
NOSIS FOR INTERMITTENT INCI-
DENT"
.
*3
If the on board diagnostic system
cannot be performed, check main
power supply and ground circuit.
Refer to
.
*4
If the incident cannot be verified, per-
form
SIS FOR INTERMITTENT
INCIDENT"
.
*5
EC-640, "TROUBLE DIAGNOSIS -
SPECIFICATION VALUE"
MBIB0178E
EC-590
[QG (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Description for Work Flow
STEP
DESCRIPTION
STEP I
Get detailed information about the conditions and the environment when the incident/symptom occurred using the
“DIAGNOSTIC WORK SHEET”,
.
STEP II
Before confirming the concern, check and write down (print out using CONSULT-II) the (1st trip) DTC and the (1st
trip) freeze frame data, then erase the DTC and the data. (Refer to
EC-582, "HOW TO ERASE EMISSION-RELATED
.) The (1st trip) DTC and the (1st trip) freeze frame data can be used when duplicat-
ing the incident at STEP III & IV.
If the incident cannot be verified, perform
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
Study the relationship between the cause, specified by (1st trip) DTC, and the symptom described by the customer.
(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-644, "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 trip) DTC by driving in (or performing) the “DTC Confirmation Procedure”. Check and read the
(1st trip) DTC and (1st trip) freeze frame data by using CONSULT-II.
During the (1st 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-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
In case the “DTC Confirmation Procedure” is not available, perform the “Overall Function Check” instead. The (1st
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 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
.) If COSULT-II is available,
perform “DATA MONITOR (SPEC)” mode with CONSULT-II and proceed to the “TOROUBLE DIAGNOSIS – SPECI-
FICATION VALUE”. (Refer to
.) (If malfunction is detected, proceed to “PERAIR/REPLACE”.) 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
,
.
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
“HOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT”, GI-21.
Repair or replace the malfunction parts.
If malfunctioning part cannot be detected, perform
EC-644, "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 trip) DTC in ECM
and TCM (Transmission control module). (Refer to
EC-582, "HOW TO ERASE EMISSION-RELATED DIAGNOSTIC
.)
TROUBLE DIAGNOSIS
EC-591
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DIAGNOSTIC WORKSHEET
Description
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 a incident. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the one on the next page in order
to organize all the information for troubleshooting.
Some conditions may cause the MI to come on steady or blink and
DTC to be detected. Examples:
●
Vehicle ran out of fuel, which caused the engine to misfire.
●
Fuel filler cap was left off or incorrectly screwed on, allowing fuel
to evaporate into the atmosphere.
SEF907L
EC-592
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TROUBLE DIAGNOSIS
Worksheet Sample
DTC Inspection Priority Chart
EBS00QV7
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC U1000 and/or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC
U1000 and U1001. Refer to
EC-651, "DTC U1000, U1001 CAN COMMUNICATION LINE"
.
MTBL0017
TROUBLE DIAGNOSIS
EC-593
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M/T MODELS
A/T MODELS
Fail-safe Chart
EBS00QV8
●
When the DTC listed below is detected, the ECM enters the fail-safe mode and the MI lights up.
Priority
Detected items (DTC)
1
●
U1001 CAN communication line
●
P0102 P0103 Mass air flow sensor
●
P0117 P0118 Engine coolant temperature sensor
●
P0221 P0222 P0223 P1223 P1224 P1225 P1226 P1229 Throttle position sensor
●
P0226 P0227 P0228 P1227 P1228 Accelerator pedal position sensor
●
P0327 P0328 Knock sensor
●
P0335 Crankshaft position sensor (POS)
●
P0340 Camshaft position sensor (PHASE)
●
P0605 ECM
●
P1610-P1615 NATS
2
●
P0132 P0134 Heated oxygen sensor 1
●
P0138 Heated oxygen sensor 2
●
P1065 ECM power supply
●
P1122 Electric throttle control function
●
P1124 P1126 P1128 Electric throttle control actuator
●
P1805 Brake switch
3
●
P1121 Electric throttle control actuator
●
P1217 Engine over temperature (OVERHEAT)
Priority
Detected items (DTC)
1
●
U1000 U1001 CAN communication line
●
P0102 P0103 Mass air flow sensor
●
P0117 P0118 Engine coolant temperature sensor
●
P0221 P0222 P0223 P1223 P1224 P1225 P1226 P1229 Throttle position sensor
●
P0226 P0227 P0228 P1227 P1228 Accelerator pedal position sensor
●
P0327 P0328 Knock sensor
●
P0335 Crankshaft position sensor (POS)
●
P0340 Camshaft position sensor (PHASE)
●
P0605 ECM
●
P1610-P1615 NATS
2
●
P0132 P0134 P0152 P0154 Heated oxygen sensor 1
●
P0138 P0158 Heated oxygen sensor 2
●
P1065 ECM power supply
●
P1122 Electric throttle control function
●
P1124 P1126 P1128 Electric throttle control actuator
●
P1805 Brake switch
3
●
P1121 Electric throttle control actuator
●
P1217 Engine over temperature (OVERHEAT)
DTC No.
Detected items
Engine operating condition in fail-safe mode
P0102
P0103
Mass air flow sensor circuit
Engine speed will not rise more than 2,400 rpm due to the fuel cut.
EC-594
[QG (WITHOUT 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-595
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Basic Inspection
EBS00QV9
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 ECM.
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-596
[QG (WITHOUT 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-576, "Accelerator Pedal Released Position Learning"
.
>> GO TO 5.
5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-576, "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-597
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6.
PERFORM IDLE AIR VOLUME LEARNING
Refer to
EC-576, "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)
EC-598
[QG (WITHOUT 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 ACCELERATOR PEDAL RELEASED POSITION LEARNING
1.
Stop engine.
2.
Perform
EC-576, "Accelerator Pedal Released Position Learning"
.
>> GO TO 12.
12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform
EC-576, "Throttle Valve Closed Position Learning"
.
>> GO TO 13.
13.
PERFORM IDLE AIR VOLUME LEARNING
Refer to
EC-576, "Idle Air Volume Learning"
.
Yes or No
Yes
>> GO TO 14.
No
>> 1. Follow the construction of “Idle Air Volume Learning”.
2. GO TO 4.
14.
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 15.
NG
>> GO TO 17.
M/T: 8
±
5
°
BTDC (in “Neutral” position)
A/T: 10
±
5
°
BTDC (in “P” or “N” position)
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)
TROUBLE DIAGNOSIS
EC-599
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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
NG
>> GO TO 16.
16.
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to
.
OK or NG
OK
>> GO TO 17.
NG
>> 1. Repair the timing chain installation.
2. GO TO 4.
17.
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 18.
NG
>> 1. Repair or replace.
2. GO TO 4.
18.
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.
M/T: 8
±
5
°
BTDC (in “Neutral” position)
A/T: 10
±
5
°
BTDC (in “P” or “N” position)
EC-600
[QG (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Symptom Matrix Chart
EBS00QVA
SYSTEM — BASIC ENGINE CONTROL SYSTEM
SYMPTOM
Reference
page
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
S
T
A
L
L
HESIT
A
TI
ON/SURGI
N
G/FL
A
T
SPOT
SP
ARK
K
NOCK/
D
ET
ONA
T
ION
L
A
CK
OF
POW
E
R/POOR
A
C
CE
L
E
RA
TI
ON
HIGH
IDL
E
/L
OW
IDL
E
ROUGH
IDL
E/HUNTIN
G
IDLING
VIBRA
T
IO
N
SL
OW/NO
R
ETURN
T
O
IDL
E
OVERHEA
T
S/W
A
TER
T
EM
P
E
RA
T
U
RE
HIGH
EXCESSIVE
FUEL
CONSUM
P
T
ION
EXCESSIVE
OI
L
C
ONSUM
P
TI
ON
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
Fuel
Fuel pump circuit
1
1
2
3
2
2
2
3
2
Fuel pressure regulator system
3
3
4
4
4
4
4
4
4
4
Injector circuit
1
1
2
3
2
2
2
2
Evaporative emission system
3
3
4
4
4
4
4
4
4
4
Air
Positive crankcase ventilation sys-
tem
3
3
4
4
4
4
4
4
4
4
1
Incorrect idle speed adjustment
3
3
1
1
1
1
1
Electric throttle control actuator
1
1
2
3
3
2
2
2
2
2
2
,
,
Ignition
Incorrect ignition timing adjustment
3
3
1
1
1
1
1
1
Ignition circuit
1
1
2
2
2
2
2
2
Main power supply and ground circuit
2
2
3
3
3
3
3
2
3
Mass air flow sensor circuit
1
1
2
2
2
2
2
2
Engine coolant temperature sensor circuit
1
1
2
2
2
3
2
2
3
1
2
Throttle position sensor circuit
1
2
2
2
2
2
2
2
,
,
,
,
Accelerator pedal position sensor circuit
3
2
1
2
2
,
Heated oxygen sensor 1 circuit
1
2
3
2
2
2
2
,
,
,
,
Knock sensor circuit
2
2
3
Crankshaft position sensor (POS) circuit
2
2
Camshaft position sensor (PHASE) circuit
2
2
Vehicle speed signal circuit
2
3
3
3
TROUBLE DIAGNOSIS
EC-601
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
SYSTEM — ENGINE MECHANICAL & OTHER
Power steering pressure sensor circuit
2
3
3
3
3
ECM
2
2
3
3
3
3
3
3
3
3
3
,
Intake valve timing control solenoid valve cir-
cuit
3
3
2
1
3
2
2
3
3
PNP switch circuit
3
3
3
3
3
3
3
Refrigerant pressure sensor circuit
2
3
3
3
3
4
Electrical load signal circuit
3
3
3
3
Air conditioner circuit
2
2
3
3
3
3
3
3
3
3
2
ATC-29
ABS actuator and electric unit (control unit)
4
BR-70
SYMPTOM
Reference
page
HARD/
NO
ST
AR
T
/REST
AR
T
(EXCP
.
H
A
)
ENGI
NE
ST
ALL
HESI
T
A
TION/
S
URGING/
FL
A
T
SPOT
SP
ARK
K
NOCK/DET
ONA
T
IO
N
L
A
CK
OF
POW
E
R/POO
R
ACCEL
E
RA
TION
H
IG
H
ID
L
E
/L
O
W
ID
L
E
ROUG
H
IDL
E/
HUNTING
ID
L
ING
VI
BRA
T
ION
SLOW
/N
O
R
ETURN
T
O
ID
LE
OVERHEA
T
S/
W
A
TER
T
EM
PERA
T
URE
HI
GH
EXCESSIVE
F
U
E
L
CONSUM
P
T
IO
N
EXCESSIVE
OIL
CONSUM
P
T
ION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
SYMPTOM
Reference
page
HARD/
NO
ST
AR
T
/REST
AR
T
(EXCP
.
HA)
ENGI
NE
ST
ALL
HESI
T
A
TION/
S
URGING/
F
L
A
T
SP
O
T
SP
ARK
K
NOCK/DET
ONA
T
IO
N
L
A
CK
OF
POW
E
R/POO
R
ACCEL
E
RA
TION
H
IG
H
ID
L
E
/L
OW
ID
L
E
ROUG
H
IDL
E/H
UNT
IN
G
ID
L
ING
VI
BRA
T
ION
SLOW
/N
O
R
ETURN
T
O
ID
LE
OVERHEA
T
S/
W
A
TER
T
EM
PERA
T
URE
HI
GH
EXCESSIVE
F
U
EL
CONSUM
P
T
ION
EXCESSIVE
OIL
CONSUM
P
T
ION
BA
TTER
Y
DEAD
(U
NDER
CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
Fuel
Fuel tank
5
5
FE-6
Fuel piping
5
5
5
5
5
5
FE-5
Vapor lock
—
Valve deposit
5
5
5
5
5
5
5
—
Poor fuel (Heavy weight gaso-
line, Low octane)
—
EC-602
[QG (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Air
Air duct
5
5
5
5
5
5
Air cleaner
Air leakage from air duct
(Mass air flow sensor —electric
throttle control actuator)
5
5
5
5
Electric throttle control actuator
Air leakage from intake manifold/
Collector/Gasket
Cranking
Battery
1
1
1
1
1
1
1
1
SC-3
Alternator circuit
SC-24
Starter circuit
3
SC-13
Signal plate/Flywheel/Drive plate
6
PNP switch
4
or
MT-17
(5MT)
Engine
Cylinder head
5
5
5
5
5
5
5
5
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mecha-
nism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve timing control
Intake valve
3
Exhaust valve
Exhaust
Exhaust manifold/Tube/Muffler/
Gasket
5
5
5
5
5
5
5
5
, FE-
11
Three way catalyst
Lubrica-
tion
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
5
5
5
5
5
5
5
5
2
LC-3
Oil level (Low)/Filthy oil
LC-3
SYMPTOM
Reference
page
HARD/
NO
ST
AR
T
/REST
AR
T
(EXCP
.
H
A
)
ENGI
NE
ST
ALL
HESI
T
A
TION/
S
URGING/
FL
A
T
SPOT
SP
ARK
K
NOCK/DET
ONA
T
IO
N
L
A
CK
OF
POW
E
R/POO
R
ACCEL
E
RA
TION
H
IG
H
ID
L
E
/L
O
W
ID
L
E
ROUG
H
IDL
E/
HUNTING
ID
L
ING
VI
BRA
T
ION
SLOW
/N
O
R
ETURN
T
O
ID
LE
OVERHEA
T
S/
W
A
TER
T
EM
PERA
T
URE
HI
GH
EXCESSIVE
F
U
E
L
CONSUM
P
T
IO
N
EXCESSIVE
OIL
CONSUM
P
T
ION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
HA
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