P0605

P0605 ECM

Component Description
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
This self-diagnosis has one or two trip detection logic.

P0605:

FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.






DTC Confirmation Procedure
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 perform the following before conducting the next step.

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.

PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to [P0605 ECM].

PROCEDURE FOR MALFUNCTION B

With SDT
1. Turn ignition switch ON and wait at least 1 second.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to [P0605 ECM].

PROCEDURE FOR MALFUNCTION C

With SDT
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 [P0605 ECM].

Diagnosis Procedure

Step 1-2: