2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES–381
ES
DTC SUMMARY
DESCRIPTION
The circuit description can be found in the EVAP (Evaporative Emission) System (See page
ES-400
).
INSPECTION PROCEDURE
Refer to the EVAP System (See page
ES-400
).
MONITOR DESCRIPTION
5 hours
*1
after the ignition switch is turned off, the electric vacuum pump creates negative pressure
(vacuum) in the EVAP (Evaporative Emission) system. The ECM monitors for leaks and actuator
malfunctions based on the EVAP pressure.
HINT:
*1: If the engine coolant temperature is not below 35
°
C (95
°
F) 5 hours after the ignition switch is turned
off, the monitor check starts 2 hours later. If it is still not below 35
°
C (95
°
F) 7 hours after the ignition switch
is turned off, the monitor check starts 2.5 hours later.
*2
: If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.
DTC
P2420
Evaporative Emission System Switching Valve
Control Circuit High
DTC No.
Monitoring Item
DTC Detection Condition
Trouble Area
Detection Timing
Detection
Logic
P2420
Vent valve stuck
open (vent)
The following condition is met
during key-off EVAP monitor
•
EVAP pressure change when
vent valve is closed (ON) less
than 2.3 mmHg
•
Pump module (0.02 inch
orifice, vacuum pump, vent
valve)
•
Connector / wire harness
(Pump module - ECM)
•
ECM
Ignition switch off
2 trip
Sequence
Operations
Descriptions
Duration
-
ECM activation
Activated by soak timer, 5 hours (7 or 9.5 hours) after ignition switch
turned off.
-
A
Atmospheric pressure
measurement
Vent valve turned OFF (vent) and EVAP system pressure measured
by ECM in order to register atmospheric pressure.
If pressure in EVAP system is not between 70 kPa and 110 kPa (525
mmHg and 825 mmHg), ECM cancels EVAP system monitor.
10 seconds
B
First 0.02 inch leak pressure
measurement
In order to determine 0.02 inch leak pressure standard, vacuum pump
creates negative pressure (vacuum) through 0.02 inch orifice and then
ECM checks if vacuum pump and vent valve operate normally.
60 seconds
C
EVAP system pressure
measurement
Vent valve is turned ON (closed) to shut EVAP system.
Negative pressure (vacuum) is created in EVAP system, and then
EVAP system pressure is measured. Write down measured value as
they will be used in leak check.
If EVAP pressure does not stabilize within 15 minutes, ECM cancels
EVAP system monitor.
15 minutes
*2
D
Purge VSV monitor
Purge VSV is opened and then EVAP system pressure is measured
by ECM.
Large increase indicates normal.
10 seconds
E
Second 0.02 inch leak pressure
measurement
After second 0.02 inch leak pressure measurement, leak check is
performed by comparing first and second 0.02 inch leak pressure
standards.
If stabilized system pressure is higher than second 0.02 inch leak
pressure standard, ECM determines that there is a leak in EVAP
system.
60 seconds
F
Final check
Atmospheric pressure is measured and then monitoring result is
recorded by ECM.
-
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 ...