Almera Tino V10 (2003 year). Manual

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-59

[QG (WITH EURO-OBD)]

*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: The trouble shooting for these DTCs need CONSULT-II.
*4: These are not displayed with GST.
*5: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.

NOTE:
Regarding V10 models with A/T, “B1” indicates bank 1 (cylinders number 1 and 4), “B2” indicates bank 2 (cylinders number 2 and 3).

DTC AND 1ST TRIP DTC

The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MI will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MI lights up. In other words,
the DTC is stored in the ECM memory and the MI lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MI during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in

EC-68, "HOW

TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION"

For malfunctions in which 1st trip DTCs are displayed, refer to

EC-55, "EMISSION-RELATED DIAGNOSTIC

INFORMATION ITEMS"

. These items are required by legal regulations to continuously monitor the system/

component. In addition, the items monitored non-continuously are also displayed on CONSULT-II.
1st trip DTC is specified in Mode 7 of ISO 15031-5. 1st trip DTC detection occurs without lighting up the MI
and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not prevent the
vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in “Work Flow” procedure Step II, refer to

EC-80, "WORK FLOW"

. Then perform “DTC Con-

firmation Procedure” or “Overall Function Check” to try to duplicate the malfunction. If the malfunction is dupli-
cated, the item requires repair.

How to Read DTC and 1st Trip DTC

DTC and 1st trip DTC can be read by the following methods.

With CONSULT-II
With GST

CONSULT-II or GST (Generic Scan Tool) Examples: P0340, P0705, P0750, etc.
These DTCs are prescribed by ISO 15031-5.
(CONSULT-II also displays the malfunctioning component or system.)

No Tools

TP SEN 2/CIRC

P1224

1224

—

EC-484

CTP LEARNING

P1225

1225

—

EC-490

CTP LEARNING

P1226

1226

—

EC-492

APP SEN 2/CIRC

P1227

1227

—

EC-494

APP SEN 2/CIRC

P1228

1228

—

EC-494

SENSOR POWER/CIRC

P1229

1229

—

EC-500

NATS MALFUNCTION

P1610 - P1615

1610 - 1615

—

EC-70

TPV SEN/CIRC A/T

P1705

1705

—

AT-183

P-N POS SW/CIRCUIT

P1706

1706

—

EC-504

O/R CLTCH SOL/CIRC

P1760

1760

—

AT-189

BRAKE SW/CIRCUIT

P1805

1805

—

EC-509

Items

(CONSULT-II screen terms)

DTC*

SRT code

Test Value/

Test Limit

(GST only)

1st trip DTC

Reference page

CONSULT-II

GST*

ECM

EC-60

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

The number of blinks of the MI in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0102, 0340 etc.
These DTCs are controlled by NISSAN.

●

1st trip DTC No. is the same as DTC No.

●

Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-II can identify malfunction status as shown below. Therefore, using CONSULT-II (if
available) is recommended.

A sample of CONSULT-II display for DTC and 1st trip DTC is shown below. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be “0”.
If a 1st trip DTC is stored in the ECM, the time data will be “[1t]”.

FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA

The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, base fuel schedule and intake
air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II or
GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
details, see

EC-119, "Freeze Frame Data and 1st Trip Freeze Frame Data"

Only one set of freeze frame data (either 1st trip freeze frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.

*: For A/T models

For example, the EGR malfunction (Priority: 2) was detected and the freeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If freeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, the first (original) freeze frame data remains unchanged in the
ECM memory.
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM mem-
ory is erased. Procedures for clearing the ECM memory are described in

EC-68, "HOW TO ERASE EMIS-

SION-RELATED DIAGNOSTIC INFORMATION"

PBIB0911E

Priority

Items

Freeze frame data

Misfire — DTC: P0300 - P0304

Fuel Injection System Function — DTC: P0171, P0172, P0174

, P0175

Except the above items (Includes A/T related items)

1st trip freeze frame data

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-61

[QG (WITH EURO-OBD)]

SYSTEM READINESS TEST (SRT) CODE

System Readiness Test (SRT) code is specified in Mode 1 of ISO 15031-5.
As part of an enhanced emissions test for Inspection & Maintenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspection due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system. Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.

NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indicates “CMPLT” for all test items, the inspector will con-
tinue with the emissions test. However, if the SRT indicates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.

NOTE:
If MI is “ON” during the state emissions inspection, the vehicle is also returned to the customer untested even
though the SRT indicates “CMPLT” for all test items. Therefore, it is important to check SRT (“CMPLT”) and
DTC (No DTCs) before the inspection.

EC-62

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

SRT Item

The table below shows required self-diagnostic items to set the SRT to “CMPLT”.

*1: If completion of several SRTs is required, perform driving patterns (DTC confirmation procedure), one by one based on the priority for
models with CONSULT-II.

SRT Set Timing

SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. The set timing is different between OK and NG results and
is shown in the table below.

OK: Self-diagnosis is carried out and the result is OK.
NG: Self-diagnosis is carried out and the result is NG.
—: Self-diagnosis is not carried out.

When all SRT related self-diagnoses showed OK results in a single cycle (Ignition OFF-ON-OFF), the SRT will
indicate “CMPLT”.

→

Case 1 above

SRT item

(CONSULT-II

indication)

Performance

Priority

Required self-diagnostic items to set the SRT to “CMPLT”

Corresponding DTC No.

M/T models

A/T models

CATALYST

Three way catalyst function

P0420

P0420, P0430

HO2S

Heated oxygen sensor 1

P0132

P0132, P0152

Heated oxygen sensor 1

P0133

P0133, P0153

Heated oxygen sensor 1

P0134

P0134, P0154

Heated oxygen sensor 1

P1143

P1143, P1163

Heated oxygen sensor 1

P1144

P1144, P1164

Heated oxygen sensor 2

P0138

P0138, P0158

Heated oxygen sensor 2

P0139

P0139, P0159

Heated oxygen sensor 2

P1146

P1146, P1166

Heated oxygen sensor 2

P1147

P1147, P1167

HO2S HTR

Heated oxygen sensor 1 heater

P0031, P0032

P0031, P0032,
P0051, P0052

Heated oxygen sensor 2 heater

P0037, P0038

P0037, P0038,
P0057, P0058

Self-diagnosis result

Example

Diagnosis

Ignition cycle

←

→

OFF

←

→

OFF

←

→

OFF

←

→

All OK

Case 1

P0400

OK (1)

— (1)

OK (2)

— (2)

P0402

OK (1)

— (1)

OK (2)

P1402

OK (1)

OK (2)

— (2)

SRT of EGR

“CMPLT”

Case 2

P0400

OK (1)

— (1)

P0402

— (0)

OK (1)

— (1)

P1402

OK (1)

OK (2)

— (2)

SRT of EGR

“INCMP”

“CMPLT”

NG exists

Case 3

P0400

—

P0402

—

P1402

—

(Consecutive

NG)

(1st trip)

DTC

1st trip DTC

—

1st trip DTC

DTC

(= MI “ON”)

SRT of EGR

“INCMP”

“CMPLT”

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-63

[QG (WITH EURO-OBD)]

When all SRT related self-diagnoses showed OK results through several different cycles, the SRT will indicate
“CMPLT” at the time the respective self-diagnoses have at least one OK result.

→

Case 2 above

If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”.

→

Case 3 above

The table above shows that the minimum number of cycles for setting SRT as “INCMP” is one (1) for each
self-diagnosis (Case 1 & 2) or two (2) for one of self-diagnoses (Case 3). However, in preparation for the state
emissions inspection, it is unnecessary for each self-diagnosis to be executed twice (Case 3) for the following
reasons:

●

The SRT will indicate “CMPLT” at the time the respective self-diagnoses have one (1) OK result.

●

The emissions inspection requires “CMPLT” of the SRT only with OK self-diagnosis results.

●

When, during SRT driving pattern, 1st trip DTC (NG) is detected prior to “CMPLT” of SRT, the self-diagno-
sis memory must be erased from ECM after repair.

●

If the 1st trip DTC is erased, all the SRT will indicate “INCMP”.

NOTE:
SRT can be set as “CMPLT” together with the DTC(s). Therefore, DTC check must always be carried out
prior to the state emission inspection even though the SRT indicates “CMPLT”.

SRT Service Procedure

If a vehicle has failed the state emissions inspection due to one or more SRT items indicating “INCMP”, review
the flowchart diagnostic sequence on the next page.

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-67

[QG (WITH EURO-OBD)]

●

The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driv-
ing habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the
shortest.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed
within zone A.

*: Normal conditions refer to the following:

●

Sea level

●

Flat road

●

Ambient air temperature: 20 - 30

C (68 - 86

●

Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30

C (68 - 86

F)], diag-

nosis may also be performed.

Pattern 1:

●

The engine is started at the engine coolant temperature of

−

10 to 35

C (14 to 95

(where the voltage between the ECM terminal 72 and ground is 3.0 - 4.3V).

●

The engine must be operated at idle speed until the engine coolant temperature is greater than
70

C (158

F) (where the voltage between the ECM terminal 72 and ground is lower than 1.4V).

Pattern 2:

●

When steady-state driving is performed again even after it is interrupted, each diagnosis can be con-
ducted. In this case, the time required for diagnosis may be extended.

*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Position for A/T Models
Set the selector lever in the “D” position with the overdrive switch turned ON.

TEST VALUE AND TEST LIMIT (GST ONLY — NOT APPLICABLE TO CONSULT-II)

The following is the information specified in Mode 6 of ISO 15031-5.
The test value is a parameter used to determine whether a system/circuit diagnostic test is “OK” or “NG” while
being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the
maximum or minimum value and is compared with the test value being monitored.
Items for which these data (test value and test limit) are displayed are the same as SRT code items.
These data (test value and test limit) are specified by Test ID (TID) and Component ID (CID) and can be dis-
played on the GST screen.

M/T Models

: Applicable

—: Not applicable

SRT item

Self-diagnostic test item

Test value (GST display)

Test limit

Application

TID

CID

CATALYST

Three way catalyst function

01H

Max.

HO2S

Heated oxygen sensor 1

09H

04H

Max.

0AH

84H

Min.

0BH

04H

Max.

0CH

04H

Max.

0DH

04H

Max.

Heated oxygen sensor 2

19H

86H

Min.

1AH

86H

Min.

1BH

06H

Max.

1CH

06H

Max.

EC-68

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

A/T Models

: Applicable

—: Not applicable

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.
If DTCs are displayed for both ECM and TCM (Transmission control module), they need to be erased individu-
ally from the ECM and TCM (Transmission control module).

HO2S HTR

Heated oxygen sensor 1 heater

29H

08H

Max.

2AH

88H

Min.

Heated oxygen sensor 2 heater

2DH

0AH

Max.

2EH

8AH

Min.

SRT item

Self-diagnostic test item

Test value (GST display)

Test limit

Application

TID

CID

SRT item

Self-diagnostic test item

Test value (GST display)

Test limit

Application

TID

CID

CATALYST

Three way catalyst function (Bank1)

01H

Max.

02H

81H

Min.

Three way catalyst function (Bank2)

03H

02H

Max.

04H

82H

Min.

HO2S

Heated oxygen sensor 1 (Bank 1)

09H

04H

Max.

0AH

84H

Min.

0BH

04H

Max.

0CH

04H

Max.

0DH

04H

Max.

Heated oxygen sensor 1 (Bank 2)

11H

05H

Max.

12H

85H

Min.

13H

05H

Max.

14H

05H

Max.

15H

05H

Max.

Heated oxygen sensor 2 (Bank 1)

19H

86H

Min.

1AH

86H

Min.

1BH

06H

Max.

1CH

06H

Max.

Heated oxygen sensor 2 (Bank 2)

21H

87H

Min.

22H

87H

Min.

23H

07H

Max.

24H

07H

Max.

HO2S HTR

Heated oxygen sensor 1 heater (Bank 1)

29H

08H

Max.

2AH

88H

Min.

Heated oxygen sensor 1 heater (Bank 2)

2BH

09H

Max.

2CH

89H

Min.

Heated oxygen sensor 2 heater (Bank 1)

2DH

0AH

Max.

2EH

8AH

Min.

Heated oxygen sensor 2 heater (Bank 2)

2FH

0BH

Max.

30H

8BH

Min.

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-69

[QG (WITH EURO-OBD)]

NOTE:
If the DTC is not for A/T related items (see

EC-20, "INDEX FOR DTC"

), skip steps 2 through 4.

If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
10 seconds and then turn it “ON” (engine stopped) again.

Turn CONSULT-II “ON” and touch “A/T”.

Touch “SELF-DIAG RESULTS”.

Touch “ERASE”. [The DTC in the TCM (Transmission control module) will be erased.] Then touch “BACK”
twice.

Touch “ENGINE”.

Touch “SELF-DIAG RESULTS”.

Touch “ERASE”. (The DTC in the ECM will be erased.)

How to Erase DTC ( With GST)

The emission related diagnostic information in the ECM can be erased by selecting Mode 4 with GST.

NOTE:
If the DTC is not for A/T related items (see

EC-20, "INDEX FOR DTC"

), skip step 2.

If the ignition switch stays “ON” after repair work, be sure to turn ignition switch “OFF” once. Wait at least
10 seconds and then turn it “ON” (engine stopped) again.

Perform “SELF-DIAGNOSTIC PROCEDURE (Without CONSULT-II)” in AT section titled “TROUBLE
DIAGNOSIS”, “Self-diagnosis”. (The engine warm-up step can be skipped when performing the diagnosis
only to erase the DTC.)

Select Mode 4 with GST (Generic Scan Tool).

How to Erase DTC ( No Tools)

If the ignition switch stays “ON” after repair work, be sure to turn ignition switch OFF” once.

SEF966X

EC-70

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Wait at least 10 seconds and then turn it “ON” (engine stopped) again.

Change the diagnostic test mode from Mode II to Mode I by depressing the accelerator pedal. Refer to

EC-72, "HOW TO SWITCH DIAGNOSTIC TEST MODE"

●

If the battery is disconnected, the emission-related diagnostic information will be lost after
approx. 24 hours.

●

The following data are cleared when the ECM memory is erased.

–

Diagnostic trouble codes

–

1st trip diagnostic trouble codes

–

Freeze frame data

–

1st trip freeze frame data

–

System readiness test (SRT) codes

–

Test values

–

Others

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)

EBS00QGS

●

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 “NATS (NISSAN ANTI-THEFT SYSTEM”, EL-352.

●

Confirm no self-diagnostic results of NATS is displayed
before touching “ERASE” in “SELF-DIAG 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 procedures of NATS initialization and NATS ignition key ID registration, refer to
CONSULT-II operation manual, NATS.

Malfunction Indicator (MI)

EBS00QGT

DESCRIPTION

The MI is located on the instrument panel.

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 “WARNING LAMPS”, EL-115
or see

EC-545

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 four functions.

SEF515Y

SAT652J

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-71

[QG (WITH EURO-OBD)]

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 are detected circuit and demands the
driver to repair the trouble.

MI Flashing without DTC

If the ECM is in Diagnostic Test Mode II, MI may flash when engine is running. In this case, check ECM diag-
nostic test mode,

EC-72, "HOW TO SWITCH DIAGNOSTIC TEST MODE"

How to switch the diagnostic test (function) modes, and details of the above functions are described later,

EC-

72, "HOW TO SWITCH DIAGNOSTIC TEST MODE"

The following emission-related diagnostic information is cleared when the ECM memory is erased.

●

Diagnostic trouble codes

●

1st trip diagnostic trouble codes

●

Freeze frame data

●

1st trip freeze frame data

●

System readiness test (SRT) codes

●

Test values

●

Others

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.

Engine running

MALFUNCTION
WARNING

This is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MI will light up to inform the driver that
a malfunction has been detected.
The following malfunctions will light up or blink the MI in
the 1st trip.

●

“Misfire (Possible three way catalyst damage)”

●

“One trip detection diagnoses”

Mode II

Ignition switch in
“ON” position

Engine stopped

SELF-DIAGNOSTIC
RESULTS

This function allows DTCs and 1st trip DTCs to be read.

Engine running

HEATED OXYGEN SENSOR 1
MONITOR

This function allows the fuel mixture condition (lean or
rich), monitored by heated oxygen sensor 1, to be read.

Engine operating condition in fail-safe mode

Engine speed will not rise more than 2,500 rpm due to the fuel cut

EC-72

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

HOW TO SWITCH DIAGNOSTIC TEST MODE

NOTE:

●

It is better to count the time accurately with a clock.

●

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.

●

Always ECM returns to Diagnostic Test Mode I after ignition switch is turned “OFF”.

How to Set Diagnostic Test Mode II (Self-diagnostic Results)

Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.

Repeat the following procedure quickly five times within 5 seconds.

Fully depress the accelerator pedal.

Fully release the accelerator pedal.

Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MI starts
blinking.

Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).

How to Set Diagnostic Test Mode II (Heated Oxygen Sensor 1 Monitor)

Set the ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to

EC-72, "How to Set Diagnostic

Test Mode II (Self-diagnostic Results)"

Start Engine.
ECM has entered to Diagnostic Test Mode II (Heated oxygen sensor 1 monitor).
ECM will start heated oxygen sensor 1 monitoring from the bank 1 sensor for A/T models.

How to Switch Monitored Sensor From Bank 1 to Bank 2 or Vice Versa

Fully depress the accelerator pedal quickly and then release it immediately.

Make sure that monitoring sensor has changed by MI blinking as follows.

How to Erase Diagnostic Test Mode II (Self-diagnostic Results)

Set ECM in Diagnostic Test Mode II (Self-diagnostic results). Refer to

EC-72, "How to Set Diagnostic Test

Mode II (Self-diagnostic Results)"

Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.

Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.

PBIB0092E

PBIB0093E

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-73

[QG (WITH EURO-OBD)]

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
“WARNING LAMPS”, EL-115 or see

EC-545

DIAGNOSTIC TEST MODE I — MALFUNCTION WARNING

●

These DTC numbers are clarified in Diagnostic Test Mode II (SELF-DIAGNOSTIC RESULTS)

DIAGNOSTIC TEST MODE II — SELF-DIAGNOSTIC RESULTS

In this mode, the DTC and 1st trip DTC are indicated by the number of blinks of the MI as shown below.
The DTC and 1st trip DTC are displayed at the same time. If the MI does not illuminate in diagnostic test mode
I (Malfunction warning), all displayed items are 1st trip DTCs. If only one code is displayed when the MI illumi-
nates in diagnostic test mode II (SELF-DIAGNOSTIC RESULTS), it is a DTC; if two or more codes are dis-
played, they may be either DTCs or 1st trip DTCs. DTC No. is same as that of 1st trip DTC. These unidentified
codes can be identified by using the CONSULT-II or GST. A DTC will be used as an example for how to read a
code.

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

EC-20, "INDEX FOR DTC"

)

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

EC-

72, "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.

Condition

When the malfunction is detected.

OFF

No malfunction.

PBIA3905E

EC-74

[QG (WITH EURO-OBD)]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

*: 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.

OBD System Operation Chart

EBS00QGU

RELATIONSHIP BETWEEN MI, 1ST TRIP DTC, DTC, AND DETECTABLE ITEMS

●

When a malfunction is detected for the first time, the 1st trip DTC and the 1st trip freeze frame data are
stored in the ECM memory.

●

When the same malfunction is detected in two consecutive trips, the DTC and the freeze frame data are
stored in the ECM memory, and the MI will come on. For details, refer to

EC-54, "Two Trip Detection

Logic"

●

The MI will go off after the vehicle is driven 3 times with no malfunction. The drive is counted only when
the recorded driving pattern is met (as stored in the ECM). If another malfunction occurs while counting,
the counter will reset.

●

The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (driving pattern A)
without the same malfunction recurring (except for Misfire and Fuel Injection System). For Misfire and
Fuel Injection System, the DTC and freeze frame data will be stored until the vehicle is driven 80 times
(driving pattern C) without the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC
RESULTS” mode of CONSULT-II will count the number of times the vehicle is driven.

●

The 1st trip DTC is not displayed when the self-diagnosis results in “OK” for the 2nd trip.

SUMMARY CHART

For details about patterns “B” and “C” under “Fuel Injection System” and “Misfire”, see

EC-76

For details about patterns “A” and “B” under “Other”, see

EC-78

*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.

Fuel mixture condition in the exhaust gas

Air fuel ratio feedback control condition

Lean

Closed loop system

OFF

Rich

*Remains ON or OFF

Any condition

Open loop system

Items

Fuel Injection System

Misfire

Other

MI (goes off)

3 (pattern B)

DTC, Freeze Frame Data (no
display)

80 (pattern C)

40 (pattern A)

1st Trip DTC (clear)

1 (pattern C), *1

1 (pattern B)

1st Trip Freeze Frame Data
(clear)

*1, *2

1 (pattern B)

Almera Tino V10 (2003 year). Manual - part 65