Toyota Corolla Repair Manual: Inspection procedure

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Engine coolant temp. Circuit range/performance problem / 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.

Replace engine coolant temperature sensor

Circuit description

Refer to dtc p0115 Dtc no. Dtc detection condition Trouble area P0116 If engine coolant temperature (ect) was between 35 c (95 °F) and 60 c (140 °F) when starting the ...

Throttle/pedal position sensor/switch ”a” circuit

Dtc p0120 throttle/pedal position sensor/switch ”a” circuit Dtc p0122 throttle/pedal position sensor/switch ”a” circuit low input Dtc p0123 throttle/pedal position sensor/switch ”a” circuit high ...

Other materials:

Circuit description
Refer to dtc p0130 Hint: the ecm provides a pulse width modulated control circuit to adjust current through the heater. The heated oxygen sensor heater circuit uses a relay on the b+ side of the circuit. Monitor description The ecm uses the heated oxygen sensor information to regulate t ...

Seat belt warning lamp for front passenger’s seat does not flash
Wiring diagram Inspection procedure 1 Inspect combination meter assy Ground terminal c9–11 on the combination meter side. check that the warning lightlights up. Ok: warning light lights up. 2 Inspect passenger seat belt warning lamp assy Ground terminal c9–6 on ...

Overhaul
Hint: components: 1. Remove front wheel 2. Disconnect front stabilizer link assy lh Remove the nut and disconnect the front stabilizer link assy lh from the shock absorber assy front lh. Hint: if the ball joint turns together with the nut, use a hexagon (6 mm) wrench to hold the st ...