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3) Freeze frame data
4) 1st trip freeze frame data
5) System readiness test (SRT) codes
6) Test values
7) 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.
Malfunction Indicator Lamp (MIL)
DESCRIPTION
NGEC0032
SEF217U
The MIL is located on the instrument panel.
1. The MILwill light up when the ignition switch is turned ON without the engine running. This is a bulb check.
쐌 If the MIL does not light up, refer to “WARNING LAMPS”, EL-89 or see EC-594.
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
NGEC0032S01
The on board diagnostic system has the following two 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.
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 MIL will light up to inform the driver
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL
in the 1st trip.
쐌 Coolant overtemperature enrichment protection
쐌 “Misfire (Possible three way catalyst damage)”
쐌 “Closed loop control”
쐌 Fail-safe mode
Diagnostic Test Mode I — Bulb Check
NGEC0032S03
In this mode, the MILon the instrumentpanel should stay ON. If it remains OFF, check the bulb. Refer to EL-89,
“WARNING LAMPS” or see EC-594.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
KA24DE
Emission-related Diagnostic Information (Cont’d)
EC-80
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