Pinpoint Test HX: Evaporative Emission (EVAP) System and Monitor: Introduction: Notes

WARNING: BEFORE REPAIRING OR INSTALLING A NEW COMPONENT IN THE FUEL SYSTEM, REDUCE THE POSSIBILITY OF INJURY OR FIRE BY FOLLOWING THE WARNING, CAUTION, AND HANDLING DIRECTIONS IN PINPOINT TEST HC. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

NOTE: Use this pinpoint test only when directed here.

Using a soap solution around the fuel filler cap or capless fuel tank filler pipe (if equipped) or using the hydrocarbon emission analyzer to determine an evaporative emission system leak is not recommended. The mandatory Rotunda Evaporative Emission System Leak Tester for On Board Diagnostic (OBD) (including the ultrasonic tester) and the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 or equivalent are the only devices to be used at this time for evaporative emission system leak detection.

When using the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001 or equivalent, the fuel level in the fuel tank must be less than 85% full.

This pinpoint test is intended to diagnose the following:

EVAP canister vent valve (9F945)
fuel filler cap (9030)
capless fuel tank filler pipe (9034)
fuel tank pressure (FTP) sensor (9C052)
EVAP check valve
EVAP ejector
EVAP purge valve (9C915)
EVAP system leaks using the Rotunda Smoke Machine, Fuel Evaporative Emission System Tester 218-00001
harness circuits: B+, CANV, EVAPCP, FTP, SIGRTN, VPWR and VREF
powertrain control module (PCM) (12A650)

For additional information on the EVAP system, refer to EVAPORATIVE EMISSION (EVAP) SYSTEMS , or the appropriate Evaporative Emissions article.