Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Toyota vehicle intrusion protection system / Horn relay circuit
Toyota Corolla (E120): Horn relay circuit
Other materials:
Inspection procedure
1 Check source voltage
Measure the voltage of the battery.
Ok:
voltage: 10 – 14 v
2 Check air bag sensor assy center
Disconnect the negative (–) terminal cable from the battery, and wait at
least for 90 seconds.
disconnect the connectors from the airbag sensor assy ...
Inspection
1. Charcoal canister assy
Visually check the charcoal canister for cracks or damage.
Inspect the charcoal canister operation.
Plug the vent port with the cap.
While holding the purge port closed, blow air (1.76
Kpa, 18 gf/cm2, 0.26 Psi) into the evap port and
...
Circuit description
The vapor pressure sensor and the vsv for the canister closed valve (ccv) are
used to detect abnormalities
in the evaporative emission control system. The ecm decides whether there is an
abnormality in the evaporative
emission control system based on the vapor pressure sensor signal.
Dtc p0 ...