COMPONENT DESCRIPTION
Intake air temperature sensor (integrated with manifold absolute pressure sensor)
Scheme 127
Intake air temperature sensor (integrated with air flow sensor)
Scheme 128
ELCM consists of the pressure sensor, the reference orifice (diameter of 0.02 inch), the vacuum pump which introduces the negative pressure into evaporative emission system, and the switching valve which switches the passage to introduce the negative pressure.
Scheme 129
Mode A (Vacuum pump operation confirmation and characteristics stability)
Purpose: Detect the vacuum pump operation trouble.
Judge as NG when the following conditions are established.
Judge as OK if the following conditions are not established, and warm up for five minutes to stabilize the vacuum pump characteristics.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Pressure sensor output value | > -224 Pa (-1.7 mmHg, -0.1 inHg) | P2404 |
JUDGMENT VALUE
Mode B (Measurement of reference pressure for setting the target negative pressure)
- Purpose: Judge the reference pressure stability. Judge as NG when the following conditions are established. JUDGMENT VALUE Malfunction Criteria Threshold Value DTC Pressure sensor maximum output value - Pressure sensor minimum output value > 0.314 kPa (2.4 mmHg, 0.1 inHg) P2404
- 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 Malfunction Criteria Threshold Value DTC Reference pressure for setting the target negative pressure < Value of Map 2 or > Value of Map 3 P2404 MAP SPECIFICATION 2 Atmospheric 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 Pa (mmHg, inHg) -3971 (-29.8, -1.2) -4078 (-30.6, -1.2) -4185 (-31.4, -1.2) -4291 (-32.2, -1.3)
| Atmospheric 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 Pa (mmHg, inHg) | 941 (-7.1, -0.3) | 1047 (-7.9, -0.3) | 1155 (-8.7, -0.3) | 1261 (-9.5, -0.4) |
MAP SPECIFICATION 3
Mode C (Switching valve operation confirmation)
Purpose: Measure the pressure increase when switching valve is changed from open to close, and detect the stuck to open/close malfunctions of the switching valve.
Judge as NG when the following conditions are established.
| Malfunction Criteria | Threshold Value | DTC |
|---|---|---|
| Pressure sensor output value - Reference pressure for setting the target negative pressure | < 224 Pa (1.7 mmHg, 0.1 inHg) | P2404 |
JUDGMENT VALUE
Vehicle speed signals are taken in to the VDC control module and hydraulic control unit, and normal/erroneous data of the ABS wheel speed sensor is received by CAN communication from the VDC control module and hydraulic control unit.
The barometric pressure sensor is built into the ECM.
The barometric pressure sensor is built into the ECM.
The barometric pressure sensor is built into the ECM.
The engine off timer is built into the ECM.
(Common Specifications)
CAN Protocol 2.0 B (Active)
Frame Format: 11 Bit ID Frame (Standard Frame)
Conforms to ISO11898
Communication Speed: 500 kbps
(Common Specifications)
CAN Protocol 2.0 B (Active)
Frame Format: 11 Bit ID Frame (Standard Frame)
Conforms to ISO11898
Communication Speed: 500 kbps
(Common Specifications)
CAN Protocol 2.0 B (Active)
Frame Format: 11 Bit ID Frame (Standard Frame)
Conforms to ISO11898
Communication Speed: 500 kbps