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:
Inspection procedure
Hint:
perform the troubleshooting of dtc p0335 first. If no trouble is
found, troubleshoot the engine mechanical
systems.
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 tr ...
Side mudguard sub–assy lh
Replacement
Hint:
use the same procedures for the rh side and lh side.
1. Remove side mudguard sub–assy lh
Using a clip remover, remove the 8 retainers and 9 clips.
using a moulding remover, remove the mudguard.
2. Install side mudguard sub–assy lh
Install the mudgu ...
Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button
assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the horn button assy
and the airbag sensor assy center.
for the blac ...