User guide
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5. Drive the vehicle on the highway with a constant speed over 40
mph (64 km/hr) with throttle as steady as possible. During this
time, verify the following EVAP monitor entry conditions: Fuel
Level Indicator stable +/-5% between the limits of 15% and
85% tank full. FTP (FTP V) stable with +/-0.5 in-H
2
0 (+/- 0.175
volts).
6. Prior to running the EVAP monitor, when EVAPPDC is less
than 75%, the canister vent solenoid is open and the system is
unsealed. To initiate the EVAP monitor, the EVAPPDC sensor
reading must increase to at least 75%. At this time, the EVAP-
PCV sensor will then read 100% (canister vent soleniod closed
to seal the system and the monitor will begin to run. Continue to
drive at a steady throttle with light steering until the EVAPCV
sensor reads 0% (canister vent soleniod open, system unsealed.)
If this step does not occur as described, fuel vapors may be
keeping the test from starting.
7. Bring the vehicle to a stop. With the ScanTool, read the EVAP
monitor results.
Catalyst Monitor Repair Verification Trip
1. Make sure that the Intake Air Temperature is above 0º F (-18º
C).
2. Complete the Vehicle Preparation for OBD-II Drive Cycle.
3. Drive in stop-and-go traffic for 20 minutes, include six different
constant speeds between 25 and 45 mph (40 and 72 km/hr).
Drive on the highway for an additional five minutes.
Fuel Monitor or HO2S Repair Verification Trip
1. Complete the Vehicle Preparation for OBD-II Drive Cycle.
2. Drive in stop-and-go traffic for six minutes, include one idle.
Accelerate to 45 mph (72 km/hr)[35 mph (56 km/hr) for Escort/
Tracer at more than 1/2 throttle.]. Maintain speed for one
minute.
Misfire Monitor Repair Verification Trip