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Mode B (Measurement Of Reference Pressure For Setting The Target Negative Pressure)

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Judgment 1

Purpose: Judge the reference pressure stability.

Judge as NG when the following conditions are established.

Judgment 2

Purpose: Judge whether the reference pressure is within the normal range, and detect the vacuum pump and orifice malfunctions.

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value DTC
Judgment 1
|Pressure sensor maximum output value - Pressure sensor minimum output value|
> 314Pa (2.355mmHg, 0.1i nHg) P2404
or
Judgment 2 Reference pressure for setting the target negative pressure
< Value of Map 2
or
> Value of Map 3
P2404
MAP 2 SPECIFICATION

Barometric pressure kPa (mmHg, inHg) 70 (525, 20.7) 80 (600, 23.6) 90 (675, 26.6) 100 (750, 29.5)
Reference pressure for setting the target negative pressure kPa (mmHg, inHg) -4 (-29.8, -1.2) -4.1 (-30.6, -1.2) -4.2 (-31.4, -1.2) -4.3 (-32.2, -1.3)
MAP 3 SPECIFICATION

Barometric pressure kPa (mmHg, inHg) 70 (525, 20.7) 80 (600, 23.6) 90 (675, 26.6) 100 (750, 29.5)
Reference pressure for setting the target negative pressure kPa (mmHg, inHg) -0.9 (-7.1, -0.3) -1 (-7.9, -0.3) -1.2 (-8.7, -0.3) -1.3 (-9.5, -0.4)