STEP 1. Using scan tool (M.U.T.-III), check the evaporative emission system monitor test.
caution | - To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
- During this test, the ECM will automatically increase the engine speed to 1,600 r/min or greater. Check that the transaxle is set to "P" position.
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(1) Connect scan tool (M.U.T-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) . (2) Turn the ignition switch to the "ON" position.
(3) Erase the DTCs using scan tool (M.U.T.-III).
(4) Check that the fuel cap is securely closed (Tighten until three clicks are heard).
(5) Start the engine.
(6) Select "Special Function".
(7) Select "Evap Leak Monitor."
(8) During this test, keep the accelerator pedal at the idle position.
(9) Keep the engine speed and engine load within the specified range. When the monitor test starts, the "In Progress" item on scan tool (M.U.T.-III) will change from "NO" to "YES".
(10) Turn the ignition switch to the "LOCK" (OFF) position.
Is "Evap Leak was detected." displayed on scan tool (M.U.T-III)?
A malfunction has been detected during the monitor test. Refer to the Diagnostic Trouble Code Chart and diagnose any other DTCs that are set . If no other DTCs have been set, go to Step 2. : The evaporative emission system is working properly at this time. Explain to the customer that an improperly tightened fuel cap can cause the MIL to illuminate. Return the vehicle to the customer.
: The EVAP monitor has been interrupted during the test. Turn the ignition switch to the "LOCK" (OFF) position once, and repeat the monitoring from Step 1.