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EC-410 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] P1423, P1424 COLD START CONTROL P1423, P1424 COLD START CONTROL Description INFOID:0000000006288266 ECM controls fuel injection timing and fuel injection quantity when engine is started with the engine cold. DTC Logic INFOID:0000000006288267 DTC DETECTION LOGIC NOTE: DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE WITH CONSULT-III 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Select “DATA MONITOR” mode with CONSULT-III. 4. Check that “COOLAN TEMP/S”. - If it is between 5 ° C (41 ° F) and 40 ° C (104 ° F) go to the following steps. - If it is below 5 ° C (41 ° F) warm engine up to more than 5 ° C (41 ° F) and retry from step 1. - If it is above 40 ° C (104 ° F) cool engine down to less than 40 ° C (104 ° F) and retry from step 1. 5. Start engine and let it idle for 5 minutes. 6. Check 1st trip DTC. WITH GST Follow the procedure “With CONSULT-III” above. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000006288268 1. INSPECTION START 1. Turn ignition switch ON. 2. Erase DTC. 3. Perform DTC confirmation procedure. Refer to 4. Check 1st trip DTC. Is the 1st trip DTC P1423 or P1424 displayed again? YES >> GO TO 2. DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause P1423 COLD START CONTROL ECM does not control fuel injection timing prop- ECM P1424 COLD START CONTROL ECM does not control fuel injection quantity |