Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Evaporative emission control
system pressure sensor / Inspection procedure
Toyota Corolla (E120): Inspection procedure
Hint
:
- if different dtcs related to different systems that have terminal e2 as the ground terminal are output simultaneously, terminal e2 may be open.
- If dtc p0441 (purge flow), p0446 (vsv for ccv), p0451, p0452 or p0453 (evaporative pressure sensor) is output with dtc p0442 or p0456, troubleshoot dtc p0441, p0446, p0451, p0452 or p0453 first. If no malfunction is detected, troubleshoot dtc p0442 or p0456 next.
- Read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.
- If the engine run time in the freeze frame data is less than 200 seconds, carefully check the vapor pressure sensor.
1 Inspect ecm(vc voltage)
- Turn the ignition switch on.
- measure the voltage between the terminals of the e3 ecm connector.
Standard:
2 Inspect ecm(ptnk voltage)
- Turn the ignition switch on.
- measure the voltage between the terminals of the e3 and e6 ecm connectors.
- Disconnect the vacuum hose from the vapor pressure sensor.
Standard (1):
- Using the mityvac (hand–held vacuum pump), apply a vacuum of 4.0 Kpa (30 mmhg, 1.18 In.Hg) to the vapor pressure sensor.
Notice
: the vacuum applied to the vapor pressure sensor must be less than 66.7 Kpa (500 mmhg, 19.7 In.Hg).
Standard (2):
- Reconnect the vacuum hose.
3 Check harness and connector(vapor pressure sensor – ecm)
- Disconnect the v4 vapor pressure sensor connector.
- disconnect the e3 and e6 ecm connectors.
- check the resistance between the wire harness side connectors.
Standard (check for open):
Standard (check for short):
- Reconnect the ecm connectors.
- reconnect the vapor pressure sensor connector.
Replace vapor pressure sensor assy
Other materials:
Front wheel alignment
Adjustment
1. Inspect tire
2. Measure vehicle height
Vehicle height:
Measuring points:
a: ground clearance of front wheel center
b: ground clearance of lower suspension arm front
bolt center
c: ground clearance of axle beam set bolt center
d: ground clearance of rear wheel center
Not ...
Overhaul
Hint: components:
1. Discharge refrigerant from refrigeration system
sst 07110–58060 (07117–58080, 07117–58090, 07117–78050, 07117–88060,
07117–88070,
07117–88080)
2. Disconnect cooler refrigerant liquid pipe a
Remove the bolt and disconnect the cooler refrigerant liqui ...
Engine immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the engine
from starting if a key has not been previously registered in the vehicle’s on-board
computer.
Never leave the keys inside the vehicle when you leave the vehicle.
Vehicles without a smart key system: The indicator li ...