2007 NISSAN TIIDA Service Repair Manual

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Page 2113 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-764
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
If one or more SRT related self-diagnoses showed NG results in 2 consecutive cycles, the SRT will also indi-
cate “CMPLT”. �

Page 2114 of 5883

NISSAN TIIDA 2007 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-765
< FUNCTION DIAGNOSIS >[MR18DE]
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WITH CONSULT-III
Selecting “SRT STATUS” in “DTC CONFIRMATION” mod

Page 2115 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-766
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check MI circuit. Refer to MWI-
15, "WARNING LAMP

EC-766
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
In this mode, the MI on the instrument panel should stay ON. If it remains OFF, check MI circuit. Refer to MWI-
15, "WARNING LAMPS/INDICATOR LAMPS : System Diagram".
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-
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 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 mal-
function. (See EC-1020, "
DTCIndex".)
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 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.
MI Condition
ON When the malfunction is detected.
OFF No malfunction.
PBIA3905E
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

Page 2116 of 5883

NISSAN TIIDA 2007 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-767
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*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 f

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-767
< FUNCTION DIAGNOSIS >[MR18DE]
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*: 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 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. Refer to “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
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.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MI starts
blinking.
4. Fully release the accelerator pedal.
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 (HEATED OXYGEN SENSOR 1 MONITOR)
1. Set the ECM in Diagnostic Test Mode II (Self-diagnostic results).
Refer to “HOW to SET DIAGNOSTIC TEST MODE II (SELF-DIAGNOSTIC RESULTS)”.
2. 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)”.
2. 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.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.
OBD System Operation Chart
Relationship Between MI, 1st Trip DTC, DTC and Detectable Items
PBIB0092E

Page 2117 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-768
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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 me

EC-768
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
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.
The MI will go off after the vehicle is driven 3 times (pattern B) 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 count-
ing, the counter will reset.
The DTC and the freeze frame data will be stored until the vehicle is driven 40 times (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 (pattern C) without
the same malfunction recurring. The “TIME” in “SELF-DIAGNOSTIC RESULTS” mode of CONSULT-III 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 “EXPLANATION FOR DRIVING PATTERNS FOR
“MISFIRE ”, “FUEL INJECTION SYSTEM”.
For details about patterns A and B under Other, see “EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE DETERIORATION>”, “FUEL INJECTION SYSTEM”.
*1: Clear timing is at the moment OK is detected.
*2: Clear timing is when the same malfunction is detected in the 2nd trip.
Relationship Between MI, DTC, 1st Trip DTC and Driving Patterns for “Misfire ”, “Fu-
el Injection System”
Items Fuel Injection System Misfire Other
MI (goes off) 3 (pattern B)3 (pattern B) 3 (pattern B)
DTC, Freeze Frame Data (no
display)80 (pattern C) 80 (pattern C) 40 (pattern A)
1st Trip DTC (clear)
1 (pattern C), *
11 (pattern C), *11 (pattern B)
1st Trip Freeze Frame Data
(clear)*1, *2 *1, *2 1 (pattern B)

Page 2118 of 5883

NISSAN TIIDA 2007 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-769
< FUNCTION DIAGNOSIS >[MR18DE]
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Explanation for Driving Patterns for “Misfire <Exhaust Quality Deterioration>”, “Fuel Injec

Page 2119 of 5883

NISSAN TIIDA 2007 Service Repair Manual EC-770
< FUNCTION DIAGNOSIS >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
The B counter will be

Page 2120 of 5883

NISSAN TIIDA 2007 Service Repair Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-771
< FUNCTION DIAGNOSIS >[MR18DE]
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*1: When the same malfunction is de-
tected in two consecutive trips, MI will
light up.*2: MI wi

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