Infiniti FX35 / FX45. Manual - part 473

 

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Infiniti FX35 / FX45. Manual - part 473

 

 

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-653

< SERVICE INFORMATION >

[VK45DE]

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tion 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 CON-
SULT-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 <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”".

For details about patterns A and B under Other, see "EXPLANATION FOR DRIVING PATTERNS  FOR “MISFIRE <EXHAUST QUALITY
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 MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS FOR “MISFIRE ”
<EXHAUST QUALITY DETERIORATION>, “FUEL INJECTION SYSTEM”

Items

Fuel Injection System

Misfire

Other

MIL (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), *

1

1 (pattern C), *

1

1 (pattern B)

1st Trip Freeze Frame Data 
(clear)

*1, *2

*1, *2

1 (pattern B)

EC-654

< SERVICE INFORMATION >

[VK45DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EXPLANATION FOR DRIVING PATTERNS FOR “MISFIRE <EXHAUST QUALITY DETERIORA-
TION>”, “FUEL INJECTION SYSTEM”

<Driving Pattern B>

Driving pattern B means the vehicle operation as follows:

*1: When the same malfunction is de-

tected in two consecutive trips, MIL 
will light up.

*2: MIL will go off after vehicle is driven 3 

times (pattern B) without any mal-
functions.

*3: When the same malfunction is de-

tected in two consecutive trips, the 
DTC and the freeze frame data will be 
stored in ECM.

*4: The DTC and the freeze frame data 

will not be displayed any longer after 
vehicle is driven 80 times (pattern C) 
without the same malfunction. (The 
DTC and the freeze frame data still 
remain in ECM.)

*5: When a malfunction is detected for 

the first time, the 1st trip DTC and the 
1st trip freeze frame data will be 
stored in ECM.

*6: The 1st trip DTC and the 1st trip 

freeze frame data will be cleared at 
the moment OK is detected.

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip 
freeze frame data will be cleared.

*8: 1st trip DTC will be cleared when ve-

hicle is driven once (pattern C) with-
out the same malfunction after DTC 
is stored in ECM.

SEF392S

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EC-655

< SERVICE INFORMATION >

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All components and systems should be monitored at least once by the OBD system.
• The B counter will be cleared when the malfunction is detected once regardless of the driving pattern.
• The B counter will be counted up when driving pattern B is satisfied without any malfunction.
• The MIL will go off when the B counter reaches 3. (*2 in “OBD SYSTEM OPERATION CHART”)

<Driving Pattern C>

Driving pattern C means the vehicle operation as follows:
The following conditions should be satisfied at the same time:
Engine speed: (Engine speed in the freeze frame data) 

±

375 rpm

Calculated load value: (Calculated load value in the freeze frame data) x (1

±

0.1) [%]

Engine coolant temperature (T) condition:
• When the freeze frame data shows lower than 70

°

C (158

°

F), T should be lower than 70

°

C (158

°

F).

• When the freeze frame data shows higher than or equal to 70

°

C (158

°

F), T should be higher than or equal to

70

°

C (158

°

F).

Example:
If the stored freeze frame data is as follows:
Engine speed: 850 rpm, Calculated load value: 30%, Engine coolant temperature: 80

°

C (176

°

F)

To be satisfied with driving pattern C, the vehicle should run under the following conditions:
Engine speed: 475 - 1,225 rpm, Calculated load value: 27 - 33%, Engine coolant temperature: more than 70

°

C

(158

°

F)

• The C counter will be cleared when the malfunction is detected regardless of vehicle conditions above.
• The C counter will be counted up when vehicle conditions above is satisfied without the same malfunction.
• The DTC will not be displayed after C counter reaches 80.
• The 1st trip DTC will be cleared when C counter is counted once without the same malfunction after DTC is

stored in ECM.

RELATIONSHIP BETWEEN MIL, DTC, 1ST TRIP DTC AND DRIVING PATTERNS EXCEPT FOR
“MISFIRE <EXHAUST QUALITY DETERIORATION>”, “FUEL INJECTION SYSTEM”

EC-656

< SERVICE INFORMATION >

[VK45DE]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

EXPLANATION FOR DRIVING PATTERNS EXCEPT FOR “MISFIRE <EXHAUST QUALITY DETE-
RIORATION>”, “FUEL INJECTION SYSTEM”

*1: When the same malfunction is de-

tected in two consecutive trips, MIL 
will light up.

*2: MIL will go off after vehicle is driven 3 

times (pattern B) without any mal-
functions.

*3: When the same malfunction is de-

tected in two consecutive trips, the 
DTC and the freeze frame data will be 
stored in ECM.

*4: The DTC and the freeze frame data 

will not be displayed any longer after 
vehicle is driven 40 times (pattern A) 
without the same malfunction.
(The DTC and the freeze frame data 
still remain in ECM.)

*5: When a malfunction is detected for 

the first time, the 1st trip DTC and the 
1st trip freeze frame data will be 
stored in ECM.

*6: 1st trip DTC will be cleared after vehi-

cle is driven once (pattern B) without 
the same malfunction.

*7: When the same malfunction is de-

tected in the 2nd trip, the 1st trip 
freeze frame data will be cleared.

SEF393SD

 

 

 

 

 

 

 

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