7. When the 0% duty value of the purge solenoid valve is operated at a 100% duty value using the simulation function [PRG_DUTY], verify that the PID [SHRT_FUEL_TRIM11] value fluctuates.(See SIMULATION INSPECTION.)
• If the PID [SHRT_FUEL_TRIM11] value does not change, inspect the following.
1. Switch the ignition OFF.
2. Switch the ignition ON (engine off).
3. When the 0% duty value of the purge solenoid valve is operated at a 50% duty value using the simulation function [PRG_DUTY], verify the operation sound of the purge solenoid valve. (See SIMULATION INSPECTION.)
• If the operation sound can be verified, inspect the following.
― Evaporative hose disconnection or damage (between intake manifold and purge solenoid valve, and purge solenoid valve and charcoal canister)
• If the operation sound cannot be verified, inspect the following.
― Open circuit in wiring harnesses and connectors (between main relay terminal and purge solenoid valve terminal B, purge solenoid valve terminal A and PCM terminal 1AW)
Warning
• When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
• While performing this step, always operate the vehicle in a safe and lawful manner.
8. Drive the vehicle at an engine speed of approx. 2,000 rpm for 30 s or more.
9. Verify that the PID [PRG_DUTY] value fluctuates between 0% and 100%.
• If the PID [PRG_DUTY] value fluctuation cannot be verified, inspect the following and repair or replace the malfunctioning location.
― PCM input signal circuit (sensor, switch, wiring harness)
― Intake air temperature No.1 signal (IAT sensor No. 1)
― Throttle opening angle signal (throttle position sensor)
― Under load/under no-load determination signal (transaxle range sensor)
