Toyota Celica 2005, Руководство по ремонту

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− DIAGNOSTICS ENGINE (1ZZ − FE)
DI − 17
2005 CELICA (RM1131U)
9. DEFINITION OF TERMS
Term Definition
Monitor description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCs A group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic.
Typical enabling condition
Preconditions that allow the ECM to detect malfunctions.
With all preconditions satisfied, the ECM sets the DTC when the monitored value(s) exceeds the malfunction
threshold(s).
Sequence of operation
The priority order that is applied to monitoring, if multiple sensors and components are used to detect the malfunc-
tion.
When a sensor is being monitored, the next sensor or component will not be monitored until the sensor monitoring
is finished.
Required sensor/compo-
nents
The sensors and components that are used by the ECM to detect malfunctions.
Frequency of operation
The number of times that the ECM checks for malfunctions per driving cycle.
”Once per driving cycle” means that the ECM detects the malfunction only one time during a single driving cycle.
”Continuous” means that the ECM detects malfunction every time an enabling condition is met.
Duration
The minimum time that the ECM must sense a continuous deviation in the monitored value(s) before setting a
DTC. This timing begins after the ”typical enabling conditions” are met.
Malfunction thresholds Beyond this value, the ECM will conclude that there is a malfunction and set a DTC.
MIL operation
MIL illumination timing after a defect is detected.
”Immediately” means that the ECM illuminates MIL the instant the ECM determines that there is a malfunction.
”2 driving cycle” means that the ECM illuminates MIL if the same malfunction is detected again in the 2nd driving
cycle.
10. TOYOTA/LEXUS PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
TOYOTA/LEXUS name Definition
Toyota HCAC system, Hydro − carbon Adsorptive Catalyst
(HCAC) system, HC adsorptive three − way catalyst
HC adsorptive three − way catalytic converter
Variable Valve Timing sensor, VVT sensor Camshaft position sensor
Variable valve timing system, VVT system Camshaft timing control system
Camshaft timing oil control valve, Oil control valve, OCV,
VVT, VSV
Camshaft timing oil control valve
Variable timing and lift, VVTL Camshaft timing and lift control
Crankshaft position sensor ”A” Crankshaft position sensor
Engine speed sensor Crankshaft position sensor
THA Intake air temperature
Knock control module Engine knock control module
Knock sensor Engine knock sensor
Mass or volume air flow circuit Mass air flow sensor circuit
Vacuum sensor Manifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCM
Power train control module
FC idle Deceleration fuel cut
Idle air control valve Idle speed control
VSV for CCV, Canister close valve VSV for canister control Evaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VSV, Purge VSV
Evaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSV Evaporative emission pressure switching valve
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