2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES–271
ES
(a) EVAP VSV stuck open
In operation C, the vacuum pump creates negative pressure (vacuum) in the EVAP (Evaporative
Emission) system. The EVAP system pressure is then measured by the ECM using the pressure
sensor. If the stabilized system pressure is higher than [second 0.02 inch leak pressure standard
x 0.2], the ECM interprets this as the EVAP VSV (Vacuum Switching Valve) being stuck open.
The ECM illuminates the MIL and sets the DTC (2 trip detection logic).
EVAP Pressure when VSV (for EVAP) Stuck Open:
VSV (for EVAP)
Vent Valve
Vacuum Pump
10 seconds
60
seconds
60
seconds
10
seconds
Malfunction
ON: Open
OFF: Closed
ON: Closed
ON: Vent
EVAP Pressure
Positive
Negative
First 0.02 Inch
Leak Pressure
Standard
Sequence
Time
OK
ON
ON
ON
D
E
C
B
A
[Second 0.02
Inch Leak
Pressure
Standard] x 0.2
Within 15 minutes
A108008E11
Summary of Contents for 2GR-FE
Page 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Page 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Page 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Page 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Page 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Page 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Page 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Page 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Page 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Page 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Page 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Page 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...