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EC-342 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] P0605 ECM P0605 ECM Component Description INFOID:0000000006158785 The ECM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM controls the engine. On Board Diagnosis Logic INFOID:0000000006158786 This self-diagnosis has one or two trip detection logic. FAIL-SAFE MODE ECM enters fail-safe mode when the malfunction A is detected. DTC Confirmation Procedure INFOID:0000000006158787 Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION B, perform PROCEDURE FOR MALFUNCTION C. NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test. PROCEDURE FOR MALFUNCTION A 1. Turn ignition switch ON. 2. Check 1st trip DTC. 3. If 1st trip DTC is detected, go to PROCEDURE FOR MALFUNCTION B 1. Turn ignition switch ON and wait at least 1 second. 2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. 3. Check 1st trip DTC. 4. If 1st trip DTC is detected, go to PROCEDURE FOR MALFUNCTION C 1. Turn ignition switch ON and wait at least 1 second. 2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON. 3. Repeat step 2 for 32 times. 4. Check 1st trip DTC. 5. If 1st trip DTC is detected, go to PBIB1164E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0605 Engine control module A) ECM calculation function is malfunctioning. • ECM B) ECM EEP-ROM system is malfunctioning. C) ECM self shut-off function is malfunctioning. Detected items Engine operation condition in fail-safe mode Malfunction A • ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. • ECM deactivates ASCD operation. |