Nissan Tiida C11. Manual - part 452

EC-458

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

DIAGNOSIS SYSTEM (ECM)

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-III. The
1st trip freeze frame data can only be displayed on the CONSULT-III screen.
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.
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 “HOW TO ERASE EMISSION-
RELATED DIAGNOSTIC INFORMATION”.

How to Read DTC and 1st Trip DTC

With CONSULT-III

CONSULT-III display the DTC in “SELF-DIAG RESULT” mode. Examples: P0340, P1148, 1706, etc.
(CONSULT-III also displays the malfunctioning component or system.)

Without CONSULT-III

The number of blinks of the MI in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 1148, 1706, 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, the Diagnostic Test Mode II do not indicate

whether the malfunction is still occurring or has occurred in the past and has returned to normal.
CONSULT-III can identify malfunction status as shown below. Therefore, using CONSULT-III (if avail-
able) is recommended.

DTC or 1st trip DTC of a malfunction is displayed in “SELF-DIAGNOSTIC RESULTS” mode of CONSULT-III.
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].

How to Erase DTC and 1st Trip DTC

With CONSULT-III

The emission related diagnostic information in the ECM can be erased by selecting “All Erase” in the “Descrip-
tion” of “FINAL CHECK” mode with CONSULT-III.

Without CONSULT-III

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

TM-38, "Diagnosis Procedure without CONSULT-III"

. (The DTC in TCM will be erased)

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

• 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
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values
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.

MALFUNCTION INDICATOR (MI)

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

EC-630, "Component Func-

tion Check"

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.

SAT652J

DIAGNOSIS SYSTEM (ECM)

EC-459

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

On Board Diagnostic System Function

The on board diagnostic system has the following four functions.

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. How to switch the diagnostic test function modes, and details of the above functions are
described later.
The following emission-related diagnostic information is cleared when the ECM memory is erased.
• Diagnostic trouble code
• 1st trip diagnostic trouble code
• Freeze frame data
• 1st trip freeze frame data

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)
1.

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.
NOTE:
Do not release the accelerator pedal for 10 seconds if MI may start blinking on the halfway of this
10 seconds. This blinking is displaying SRT status and is continued for another 10 seconds.

Fully release the accelerator pedal.

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 de-
tected twice in two consecutive driving cycles (two trip de-
tection logic), the MI will light up to inform the driver that a
malfunction has been detected.
One trip detection diagnoses will light up the MI in the 1st
trip.

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.

EC-460

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

DIAGNOSIS SYSTEM (ECM)

ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
NOTE:
Wait until the same DTC (or 1st trip DTC) appears to confirm all DTCs certainly.

HOW TO SET DIAGNOSTIC TEST MODE II (HEATE OXYGEN SENSOR 1 MONITOR)
1.

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

HOW TO ERASE DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS)
1.

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

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 “How
to Erase Diagnostic Test Mode II (Self-diagnostic Results)”.
• If the battery is disconnected, the DTC will be lost from the backup memory within 24 hours.
• Be careful not to erase the stored memory before starting trouble diagnoses.

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

EC-

630, "Component Function Check"

Diagnostic Test Mode I — Malfunction Warning

This DTC number is 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-

PBIB0092E

Condition

When the malfunction is detected.

OFF

No malfunction.

DIAGNOSIS SYSTEM (ECM)

EC-461

< FUNCTION DIAGNOSIS >

[HR16DE (WITHOUT EURO-OBD)]

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-III. 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 as follows.

The length of time the 1,000th-digit numeral flashes on and off is 1.2 seconds consisting of an ON (0.6-sec-
ond) - 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 mal-
function. (See

EC-667, "DTC Index"

)

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.
Nest 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 1 seconds with engine running at 2,000 rpm under no load.

Number

Flashes

PBIB3005E

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

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