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SEF099P DIAGNOSTIC PROCEDURE SEF575Q SEF415U INSPECTION START CHECK EXHAUST SYSTEM. OK E NG Repair or replace it. CHECK FOR EXHAUST AIR LEAK. OK E NG Repair or replace. CHECK FOR INTAKE AIR LEAK. OK E NG Repair or replace. Check for ignition timing. OK E NG Adjust ignition timing. CHECK IGNITION SPARK. rocker cover. 2. Connect a known-good spark plug to the ignition coil assembly. 3. Place end of spark plug against a suit- able ground and crank engine. 4. Check for spark. OK E NG Check ignition coil with CHECK INJECTORS. Injectors, EC-515. 2. Stop engine and then turn ignition switch “ON”. 3. Check voltage between ECM terminals q 1 , q 2 , q 3 , q 5 , q 6 , q 7 , q 8 , q 14 and ground with CONSULT-II or tester. 4. Turn ignition switch “OFF”. OK E NG Perform TROUBLE DIAG- Remove injector assembly. 1. Turn ignition switch “OFF”. 2. Disconnect camshaft position sensor harness connector. 3. Turn ignition switch “ON”. Make sure fuel does not drip from injec- Does not drip. E Drips Replace the injectors from Perform “TROUBLE DIAGNOSIS FOR Trouble is fixed. E Trouble is not fixed. Replace three way catalyst. INSPECTION END GI MA EM LC FE AT PD FA RA BR ST RS BT HA EL IDX TROUBLE DIAGNOSIS FOR DTC P0420 (B1), P0430 (B2) Three Way Catalyst Function (P0420: Left H H H H H H H H H H EC-297 |