PINPOINT TEST HX: Evaporative Emission (EVAP) System and Monitor: Introduction

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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. When using the Evaporative Emission Leak Detector With On Board Nitrogen Generator 218-522C 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 purge valve (9C915)
EVAP check valve
EVAP ejector
EVAP vapor blocking valve
EVAP system leaks using the Evaporative Emission Leak Detector With On Board Nitrogen Generator 218-522C or equivalent
harness circuits: B+, CANV, EVAPCP, FTP, SIGRTN, VBV, VPWR and VREF
PCM (12A650)

For additional information on the EVAP system, refer to the Evaporative Emissions article

Fig 1: Evaporative Emission (EVAP) Canister Vent Valve Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
KAPWR (Keep Alive Memory Power)	1
CANV (Canister Vent)	2

Fig 2: Evaporative Emission (EVAP) Purge Valve Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VPWR (Vehicle Power)	2
EVAPCP (EVAP Canister Purge)	1

Fig 3: Evaporative Emission (EVAP) Vapor Blocking Valve Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VBV (Vapor Blocking Valve)	1
VPWR (Vehicle Power)	2

Fig 4: Fuel Tank Pressure (FTP) Sensor Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
VREF (Reference Voltage)	3
FTP (Fuel Tank Pressure)	1
SIGRTN (Signal Return)	2

Fig 5: Powertrain Control Module (PCM) Connector - For PCM Connector Views

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
EVAPCP (EVAP Canister Purge)	B1
FTP (Fuel Tank Pressure)	B24
CANV (Canister Vent)	B22