ELECTRIC IGNITION SYSTEM : System Description
SYSTEM DIAGRAM
*1: CVT models
*2: M/T models
Input/output signal chart
Sensor | Input Signal to ECM | ECM function | Actuator | |
Crankshaft position sensor (POS) |
|
Ignition timing control | Ignition coil (with power transistor) | |
Camshaft position sensor (PHASE) | ||||
Mass air flow sensor | Amount of intake air | |||
Engine coolant temperature sensor | Engine coolant temperature | |||
Throttle position sensor | Throttle position | |||
Accelerator pedal position sensor | Accelerator pedal position | |||
Transmission range switch*1 | Gear position | |||
Park/neutral position (PNP) switch*2 | ||||
Battery | Battery voltage*3 | |||
Knock sensor | Engine knocking condition | |||
Combination meter | CAN communication | Vehicle speed signal |
*1: CVT models
*2: M/T models
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
Firing order: 1 - 3 - 4 - 2
The ignition timing is controlled by the ECM to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM.
The ECM receives information such as the injection pulse width and camshaft position sensor (PHASE) signal.
Computing this information, ignition signals are transmitted to the power transistor.
During the following conditions, the ignition timing is revised by the ECM according to the other data stored in the ECM.
The knock sensor retard system is designed only for emergencies. The basic ignition timing is programmed within the anti-knocking zone, if recommended fuel is used under dry conditions. The retard system does not operate under normal driving conditions. If engine knocking occurs, the knock sensor monitors the condition.
The signal is transmitted to the ECM. The ECM retards the ignition timing to eliminate the knocking condition.
Cylinder block
Exploded View
Cylinder block
Block heater (for Canada)
Top ring
Second ring
Oil ring
Piston
Piston pin
Snap ring
Connecting rod
Connecting rod bearing (upper)
Connecting rod bearing (lower)
Crankshaft key
Connecting rod cap
Connecting rod cap bolt
Main bearing ca ...
Dtc/circuit diagnosis
Power supply and ground circuit
Diagnosis Procedure
Refer to LAN-7, "CAN COMMUNICATION SYSTEM : System Description".
Vehicle security indicator
Description
DTC DETECTION LOGIC
NOTE:
U1000 can be set if a module harness was disconnected and reconnected,
perhaps during a repair. Con ...
Rear door finisher
Exploded View
Rear door panel
Rear door finisher
Inside door handle escutcheon
Rear power window switch finisher
Grommet
Clip
Pawl
Front
Removal and Installation
CAUTION:
When removing, always use a suitable tool that is made of plastic
to prevent damage to the p ...