EVAP System Leak Test
CAUTION:
DO NOT use compressed air. DO NOT start engine. DO NOT apply more than.6 psi (4.12 kPa) of pressure to EVAP system.
- Connect EVAP Service Port Adapter (J41413-OBD) to EVAP service port. See Fig 1. Connect a suitable pressure pump to adapter. DO NOT use compressed air. If using CONSULT-II, go to next step. If using generic scan tool, go to step 3.
- Turn ignition switch to ON position. Select EVAP SYSTEM CLOSE of WORK SUPPORT mode with CONSULT-II. Press START. Observe pressure indicator on CONSULT-II. Apply pressure to EVAP system until pressure indicator reaches middle of bar graph. DO NOT exceed.6 psi (4.12 kPa) of pressure. Using Leak Detector (J41416), locate EVAP leak. See VACUUM DIAGRAMS article.
- Disconnect EVAP Canister Vent Control Valve (EVAP-CVCV) and vacuum cut valve by-pass valve harness connectors. See Fig 2. Using jumper wires, apply battery voltage to EVAP-CVCV and vacuum cut valve by-pass valve terminals. Apply.2-.4 psi (1.38-2.76 kPa) of pressure to EVAP service port. DO NOT exceed.6 psi (4.12 kPa) of pressure. Remove pressure pump from EVAP service port. Using Leak Detector (J41416), locate EVAP system leak. See VACUUM DIAGRAMS article.