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.
B0021 Side curtain air bag module LH
Description
DTC B0021 LH SIDE CURTAIN AIR BAG MODULE
The LH side curtain air bag module is wired to the air bag diagnosis sensor
unit. The air bag diagnosis sensor
unit will monitor for opens and shorts in detected lines to the LH side curtain
air bag module.
PART LOCATION
Refer to SRC-5, ...
Main line between ipdm-e and dlc circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and loose
connection (connector side
and harness side).
Harness connector e4
Harness connec ...
Multiport fuel injection system
MULTIPORT FUEL INJECTION SYSTEM : System
Description
SYSTEM DIAGRAM
*1: ECM determines the start signal status by the signals of engine speed and
battery voltage.
*2: M/T models
*3: CVT models
*4: This sensor is not used to control the engine system under normal
conditions.
SYSTEM DES ...