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.






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 SEE Diagnosis Procedure.

PROCEDURE FOR MALFUNCTION B

With CONSULT-III
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 SEE Diagnosis Procedure.

PROCEDURE FOR MALFUNCTION C

With CONSULT-III
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds, and then turn it ON.
3. Repeat step 2 for 32 times.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to SEE Diagnosis Procedure.




Diagnosis Procedure
1.INSPECTION START
With CONSULT-III
1. Turn ignition switch ON.
2. Select "SELF DIAG RESULTS" mode with CONSULT-III.
3. Touch "ERASE".
4. Perform DTC Confirmation Procedure.
See SEE DTC Confirmation Procedure.
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3. Perform DTC Confirmation Procedure.
See SEE DTC Confirmation Procedure.
4. Is the 1st trip DTC P0605 displayed again?
Yes or No
Yes - GO TO 2.
No - INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Special Repair Requirement.
3. Perform VIN Registration.
4. Perform Accelerator Pedal Released Position Learning.
5. Perform Throttle Valve Closed Position Learning.
6. Perform Idle Air Volume Learning.
- INSPECTION END