Toyota Corolla Repair Manual: Circuit description
Hint
:
- these dtcs indicate a malfunction related to the primary circuit.
- If dtc p0351 is displayed, check the no.1 Ignition coil with igniter circuit.
- If dtc p0352 is displayed, check the no.2 Ignition coil with igniter circuit.
- If dtc p0353 is displayed, check the no.3 Ignition coil with igniter circuit.
- If dtc p0354 is displayed, check the no.4 Ignition coil with igniter circuit.
A direct ignition system (dis) is used on this vehicle. The dis improves the ignition timing accuracy, reduces high–voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.
The dis is a 1–cylinder ignition system which ignites one cylinder with one ignition coil. In the 1–cylinder ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the center electrode to the ground electrode.
The ecm determines the ignition timing and outputs the ignition signals (igt) for each cylinder. Using the ignition (igt) signal, the ecm turns on and off the power transistor inside the igniter and this switches on and off the current to the primary coil. When the current flow to the primary coil is cut off, high–voltage is generated in the secondary coil and this voltage is applied to the spark plugs to spark inside the cylinders.
As the ecm cuts the current to the primary coil, the igniter sends back the ignition confirmation (igf) signal for each cylinder ignition to the ecm.
Monitor description
If the ecm does not receive the ignition confirmation signal (igf) after sending the ignition signal (igt), it interprets this as a fault in the igniter and sets a dtc.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Component operating range
Wiring diagram
Ignition coil primary/secondary
circuit
Dtc p0351 ignition coil ”a” primary/secondary
circu
Dtc p0352 ignition coil ”b” primary/secondary
circuit
Dtc p0353 ignition coil ”c” primary/secondary
circuit
Dtc p0354 ignition coil ”d” primar ...
Inspection procedure
Hint:
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
usefu ...
Other materials:
Transmitter battery
Replacement
1. Replace transmitter battery
Notice:
special caution should be taken for handling each component as they are
precision electronic components.
Using a screwdriver, pry out the transmitter case.
Notice:
do not forcibly pry out the case.
Hint:
tape the screwdriver tip ...
Automatic transaxle fluid (atm)
On–vehicle inspection
1. Check the fluid level
Hint:
drive the vehicle so that the engine and transaxle are at normal
operating temperature.
Fluid temperature: 70 – 80 °c (158 – 176 °f)
park the vehicle on a level surface and set the parking
brake.
with the engine idling ...
Wiper & washer
Preparation
Sst
Recomended tools
Equipment
...