Nissan Silvia. Instruction — part 130
Malfunction Indicator Lamp (MIL)
DESCRIPTION
NMEC0032
SAT652J
The MIL is located on the instrument panel.
1. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check.
I
If the MIL does not light up, refer to EL-73, WARNING LAMPS or see EC-224.
2. When the engine is started, the MIL should go off.
If the MIL remains on, the on board diagnostic system has detected an engine system malfunction.
On Board Diagnostic System Function
NMEC0032S01
The on board diagnostic system has the following four functions.
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 MIL bulb for damage (blown,
open circuit, etc.).
If the MIL does not come on, check MIL circuit. (See
EC-224.)
Engine running
MALFUNCTION
WARNING
This is a usual driving condition. When a malfunction is
detected, the MIL will light up to inform the driver that a
malfunction has been detected.
Mode II
Ignition switch in
ON position
Engine stopped
SELF-DIAGNOSTIC RESULTS
This function allows DTCs to be read.
Engine running
HEATED OXYGEN SENSOR 1
(FRONT) MONITOR
This function allows the fuel mixture condition (lean or
rich), monitored by heated oxygen sensor 1 (front), to be
read.
MIL Flashing without DTC
NMEC0032S0102
If the ECM is in Diagnostic Test Mode II, MIL may flash when engine is running. In this case, check ECM
diagnostic test mode following “How to Switch Diagnostic Test Modes”, EC-36.
How to switch the diagnostic test (function) modes, and details of the above functions are described later.
(Refer to EC-37.)
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL)
EC-35
How to Switch Diagnostic Test Modes
NMEC0032S07
SEC330C
*1
*2
*3
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
EC-36
Diagnostic Test Mode I — Bulb Check
NMEC0032S03
In this mode, the MIL on the instrument panel should stay ON. If it remains OFF, check the bulb. Refer to
EL-73, “WARNING LAMPS” or see EC-224.
Diagnostic Test Mode I — Malfunction Warning
NMEC0032S04
MIL
Condition
ON
When malfunction is detected.
OFF
No malfunction.
Diagnostic Test Mode II — Self-diagnostic Results
NMEC0032S08
In this mode, the DTC is indicated by the number of blinks of the MIL.
A DTC will be used as an example for how to read a code.
SEC375C
Long (0.6 second) blinking indicates the number of 1000th and 100th digits, and short (0.3 second) blinking
indicates the number of tenth and single digits.
For example, the malfunction indicator lamp blinks four times for about 2.5 seconds (0.6 sec x 4 times) and
then it blinks three times for about 1 second (0.3 sec x 3 times). This indicates the DTC “0403” and refers to
the malfunction of the throttle position sensor.
In this way, all the detected malfunctions are classified by their diagnostic trouble code numbers. The DTC
“0505” refer to no malfunction. (See TROUBLE DIAGNOSIS — INDEX, EC-4.)
How to Erase Diagnostic Test Mode II (Self-diagnostic results)
NMEC0032S0801
The DTC can be erased from the backup memory in the ECM when the diagnostic test mode is changed from
Diagnostic Test Mode II to Diagnostic Test Mode I. (Refer to “How to Switch Diagnostic Test Modes”, EC-36.)
I
If the battery is disconnected, the DTC will be lost from the backup memory after approx. 24 hours.
I
Be careful not to erase the stored memory before starting trouble diagnoses.
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
EC-37
Diagnostic Test Mode II — Heated Oxygen Sensor 1 (Front) Monitor
=NMEC0032S09
In this mode, the MIL displays the condition of the fuel mixture (lean or rich) which is monitored by the heated
oxygen sensor 1 (front).
MIL
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
*: Maintains conditions just before switching to open loop.
To check the heated oxygen sensor 1 (front) 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
MIL comes ON more than 5 times within 10 seconds with engine running at 2,000 rpm under no-load.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Malfunction Indicator Lamp (MIL) (Cont’d)
EC-38
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст