ELECTRONIC SPARK ADVANCE (ESA) CONTROL BLOCK DIAGRAM [Z6]
B3E014000140T29
• The PCM determines the engine operation conditions based on input signals from sensors, blocks current to the ignition coils by the calculated ignition timing, and discharges (ignition) the spark plugs based on the effect of electromagnetic mutual induction.
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1
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Neutral switch (MTX)
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2
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CPP switch (MTX)
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3
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PSP switch
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4
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ECT sensor
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5
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IAT sensor
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6
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CKP sensor
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7
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CMP sensor
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8
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TP sensor
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9
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MAF sensor
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10
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KS
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11
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TR switch (ATX)
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12
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Brake switch
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13
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Instrument cluster (A/C on request signal)
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14
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Refrigerant pressure switch (low pressure switch, high pressure switch)
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15
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Instrument cluster (engine stop request signal)
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16
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Igniter operation time
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17
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Ignition timing
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18
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Fixed ignition
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19
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Cycle estimated ignition
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20
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Idle spark advance
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21
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Basic spark advance
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22
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Corrections
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23
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Ignition coil
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