Toyota 2GR-FE, Manual

Page: 576 / 1021

ES–420
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
Make a note of the pressures checked in steps "A" and "B"
below.
(a) Check the EVAP pressure 4 seconds after the leak
detection pump is activated* (Step "A").
*: The leak detection pump begins to operate as step 1/5
finishes and step 2/5 starts.
(b) Check the EVAP pressure again when it has stabilized.
This pressure is the reference pressure (Step "B").
Result
*: These DTCs are already present in the ECM when the
vehicle arrives and are confirmed in the "CONFIRM DTC"
procedures above.
6
PERFORM EVAP SYSTEM CHECK (STEP 2/5)
Purge VSV
Vent Valve
Leak Detection
Pump
EVAP Pressure
Positive
Negative
First Reference
Pressure
Standard
4 seconds
2/5 3/5
Within 15 minutes
60
seconds
Steps
Time
(Reference)
OK
Vent Valve Stuck Closed
Leak Detection Pump Stuck OFF
Reference Orifice High-flow
ON
ON
ON
ON: Open
OFF: Closed
OFF: Vent
ON: Closed
Reference Orifice Clogged
A106738E05
DTCs* Test Results Suspected Trouble Areas Proceed to
-
EVAP pressure in step (b) between -4.85 kPa-g
and -1.057 kPa-g (-36.4 mmHg-g and -7.93
mmHg-g)
Not yet determined A
P043F and
P2401
EVAP pressure in step (b) -1.057 kPa-g (-7.93
mmHg-g) or more • Reference orifice high-flow
• Leak detection pump stuck OFF
B
P043E
EVAP pressure in step (b) below -4.85 kPa-g (-
36.4 mmHg-g)
Reference orifice clogged C
P2419
EVAP pressure in step (a) more than -1.057
kPa-g (-7.93 mmHg-g)
Vent valve stuck closed D