DTC SUMMARY
DTC No. |
Monitoring Item |
Malfunction Detection Condition |
Trouble Area |
Detection Timing |
Detection Logic |
---|---|---|---|---|---|
P043E |
Reference orifice clogged |
P043E, P043F, P2401, P2402 and P2419 stored when one of following conditions met during key-off EVAP monitor:
|
|
While ignition switch off |
2 trip |
P043F |
Reference orifice high-flow |
||||
P2401 |
Leak detection pump stuck OFF |
||||
P2402 |
Leak detection pump stuck ON |
||||
P2419 |
Vent valve stuck closed |
HINT:
The reference orifice is located inside the canister pump module.
DESCRIPTION
The description can be found in EVAP (Evaporative Emission) System (See page ).
MONITOR DESCRIPTION
5 hours* after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the EVAP system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.
HINT:
*: 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.
Sequence |
Operation |
Description |
Duration |
---|---|---|---|
- |
ECM activation |
Activated by soak timer, 5, 7 or 9.5 hours after ignition switch turned off. |
- |
A |
Atmospheric pressure measurement |
Vent valve is turned off (vent) and EVAP system pressure is measured by ECM in order to register atmospheric pressure. If pressure in EVAP system is not between 70 kPa(abs) and 110 kPa(abs) [525 mmHg(abs) and 825 mmHg(abs)], ECM cancels EVAP system monitor. |
60 seconds |
B |
First reference pressure measurement |
In order to determine reference pressure, leak detection pump creates negative pressure (vacuum) through reference orifice and then ECM checks if leak detection pump and vent valve operate normally. |
360 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 EVAP system pressure is then measured. Write down measured value as it will be used in leak check If EVAP pressure does not stabilize within 15 minutes, ECM cancels EVAP system monitor. |
15 minutes* |
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 reference pressure measurement |
After second reference pressure measurement, leak check is performed by comparing first and second reference pressure measurements. If stabilized system pressure is higher than second reference pressure, ECM determines that EVAP system is leaking. |
60 seconds |
- |
Final check |
Atmospheric pressure is measured and then monitoring result is recorded by ECM. |
- |
*: If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.
Text in Illustration
*1 |
Purge VSV: Off (Closed) |
*2 |
Purge VSV: On (Open) |
*3 |
Vent Valve: Off (Vent) |
*4 |
Vent Valve: On (Closed) |
*5 |
Leak Detection Pump: Off |
*6 |
Leak Detection Pump: On |
*7 |
Reference Orifice (0.02 inch) |
*8 |
Canister Pressure Sensor |
*9 |
Canister |
*10 |
Fuel Tank |
*11 |
Canister Pump Module |
*12 |
Canister Filter |
*a |
Operation A: Atmospheric Pressure Measurement |
*b |
Operation B, E: Reference Pressure Measurement |
*c |
Operation C: EVAP System Pressure Measurement |
*d |
Operation D: Purge VSV Monitor |
*e |
Atmospheric Pressure |
*f |
Negative Pressure |
The leak detection pump creates negative pressure through the reference orifice (in operation B and E). When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs)]* and saturated within a minute. If not, the ECM interprets this as a malfunction. The ECM illuminates the MIL and stores a DTC if this malfunction is detected in consecutive drive cycles.
*: Typical value.
MONITOR STRATEGY
Required Sensors/Components |
Canister pump module |
Frequency of Operation |
Once per driving cycle |
Duration |
Within 7 minutes |
MIL Operation |
2 driving cycles |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored |
None |
Atmospheric pressure |
70 kPa(abs) [525 mmHg(abs)] or higher, and less than 110 kPa(abs) [825 mmHg(abs)] |
Battery voltage |
10.5 V or higher |
Vehicle speed |
Less than 4 km/h (2.5 mph) |
Ignition switch |
Off |
Time after key-off |
5, 7 or 9.5 hours |
Canister pressure sensor malfunction |
Not detected |
Purge VSV |
Not operated by scan tool |
Vent valve |
Not operated by scan tool |
Leak detection pump |
Not operated by scan tool |
Both of following conditions met before key-off |
Conditions 1 and 2 |
1. Duration that vehicle is driven |
5 minutes or more |
2. EVAP purge operation |
Performed |
Engine coolant temperature |
4.4°C (40°F) or higher, and less than 35°C (95°F) |
Intake air temperature |
4.4°C (40°F) or higher, and less than 35°C (95°F) |
TYPICAL MALFUNCTION THRESHOLDS
"Saturated" indicates that the EVAP pressure change is below 0.286 kPa(gauge) [2.145 mmHg(gauge)] in 60 seconds.
One of following conditions met |
- |
EVAP pressure just after reference pressure measurement started |
Higher than -0.25 kPa(gauge) [-1.875 mmHg(gauge)] |
Reference pressure |
Below -4.85 kPa(gauge) [-36.38 mmHg(gauge)] |
Reference pressure |
-1.057 kPa(gauge) [-7.929 mmHg(gauge)] or higher |
Reference pressure |
Not saturated within 360 seconds |
Reference pressure difference between first and second |
0.9 kPa(gauge) [6.751 mmHg(gauge)] or higher |
MONITOR RESULT
Refer to Checking Monitor Status (See page
).
CONFIRMATION DRIVING PATTERN
NOTICE:
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
HINT:
PROCEDURE
1. |
REFER TO THE EVAP SYSTEM |
Refer to EVAP System (See page ).
NEXT |
END |
Audio Receiver Assembly Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Audio Receiver Assembly Communication Stop Mode
"Display and Navigation (AVN1)" is not displayed on the "CAN
Bus Check ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
NOTICE:
Release the vacuum from the booster by depressing the brake pedal several times.
Then remove the brake master cylinder from the brake booster.
PROCEDURE
1. DRAIN BRAKE FLUID
NOTICE:
If brake fluid leaks onto any ...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the T ...