Aerio L4-2.3L (2006)
2. Reference vacuum pressure (reference orifice vacuum) check:
a. In the state of Step 1), operate EVAP leak detection pump by connecting 12 V -battery to terminal "1" and terminal "5" of EVAP leak check
module. Under pump operating, check that pressure sensor output voltage (reference orifice vacuum) becomes lower than pressure sensor
output voltage) of step 1) by approx. 0.1 V.
If sensor voltage is out of specification, replace EVAP leak check module.
EVAP Leak Check Module Visual Check
Reference: EVAP Canister Removal and Installation
Check EVAP leak check module and its O-ring (1) for damage and deterioration. If malfunctioning is found, replace.
