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:
Airbags
Front airbag, driver
Front airbag, front passenger
Head airbag
Side airbag
Knee airbag
Front airbags
Front airbags help protect the driver and the
front passenger by responding to frontal impacts
in which safety belts alone would not provide adequate
protection.
Side airbag
In the event of a ...
Inspection procedure
1 Check door lock
When the door does not operate manually, proceed to ”a”.
when the door does not operate via the key, proceed to ”b”.
2 Inspect door lock control switch
W/ power window:
remove the power window regulator master switch assy.
Inspect the master ...
Repair
1. Steering off center repair procedure
Inspect steering wheel off center.
Apply masking tape on the top center of the steering
wheel and steering column upper cover.
Driving the vehicle on a straight line for 100 meters
at a constant speed of 35 mph (56 km/h), and ho ...
