Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Insufficient coolant temperature
for closed loop fuel control / Inspection procedure
Toyota Corolla (E120): Inspection procedure
Hint
:
- if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first.
- Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.
1 Check other dtc output(in addition to dtc p0125)
- Connect the hand–held tester or the obd ii scan tool to the dlc3.
- turn the ignition switch on and push the hand–held tester or the obd ii scan tool main switch on.
- select the item ”diagnosis / enhanced obd ii / dtc info / current codes”.
- read the dtcs.
Result:
Hint
: if any other codes besides p0125 are output, perform the troubleshooting for those dtcs first.
2 Inspect thermostat
Replace engine coolant temperature sensor
Other materials:
Brake
Service data
Torque specification
Parking brake
Service data
Torque specification
...
Manual air conditioning system
Air conditioning controls
The display and button positions will differ depending on the type of
the system.
Fan speed control switch
Temperature control switch
"MAX A/C" switch
"A/C" switch
Outside air mode switch
Recirculated air mode switch
Airflow mode control switch
Rear window defogge ...
Inspection procedure
1 Check operation(starter)
Check that the starter operates normally and that the engine starts.
2 Input signal check
See input signal check on page 05–745.
check the indicator light when shifting into except d position.
Ok:
the indicator light goes off when shifting ...