Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system
Toyota Corolla (E120): Sfi system
- How to proceed with troubleshooting
- Customer problem analysis check
- Location
- Diagnosis system
- Dtc check/clear
- Check mode procedure
- Basic inspection
- Terminals of ecm
- Data list/active test
- Definition of terms
- Toyota/lexus part and system name list
- List of disable a monitor
- Checking monitor status
- Readiness monitor drive pattern
- Diagnostic trouble code chart
- Fail–safe chart
- Problem symptoms table
- Camshaft position ”a” actuator circuit
- Camshaft position ”a” –timing over
- Crankshaft position – camshaft position correlation
- Oxygen sensor heater control circuit...
- Mass or volume air flow circuit
- Mass or volume air flow circuit range/performance problem
- Intake air temperature circuit
- Engine coolant temperature circuit
- Engine coolant temp. Circuit range/performance problem
- Throttle/pedal position sensor/switch ”a” circuit
- Throttle/pedal position sensor/switch ”a” circuit range/performance problem
- Insufficient coolant temperature for closed loop fuel control
- Coolant thermostat (coolant temperature below thermostat regulating temperature)
- Oxygen sensor
- Oxygen sensor circuit slow response
- Oxygen sensor circuit no activity detected
- Oxygen sensor circuit malfunction
- System too lean/rich
- Random/multiple cylinder misfire detected
- Knock sensor 1 circuit
- Crankshaft position sensor ”a” circuit
- Camshaft position sensor ”a” circuit
- Ignition coil primary/secondary circuit
- Catalyst system efficiency below threshold
- Evaporative emission control system
- Evaporative emission control system leak detected
- Evaporative emission control system pressure sensor
- Vehicle speed sensor ”a”
- Idle air control System/ Circuit
- System voltage
- Ecm/pcm processor
- Starter relay circuit high
- Ecm power source circuit
- Fuel pump control circuit
- Stop light switch circuit
- Mil circuit
Other materials:
Inspection procedure
Hand–held tester:
1 Perform active test by hand–held tester(operation of circuit
opening relay)
Connect the hand–held tester to the dlc3.
turn the ignition switch on and push the hand–held tester main
switch on.
select the item ”diagnosis / enhanced obd ii / active ...
Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button
assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the airbag sensor
assy center and the horn button assy.
release the airbag ...
System description
The ecm uses signals from the vehicle speed sensor and crankshaft position
sensor to detect the actual
gear position (1st, 2nd, 3rd or o/d gear).
Then the ecm compares the actual gear with the shift schedule in the ecm memory
to detect the mechanical
trouble of the shift solenoid valves, th ...