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 "Diagnosis Procedure".

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 "Diagnosis Procedure".

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 "Diagnosis Procedure".

Diagnosis Procedure

1. INSPECTION START

With SDT
1 Turn ignition switch ON.
2 Select "DTC check" mode with SDT.
3 Touch "Clear".
4 Perform DTC Confirmation Procedure.
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 "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 immobilizer system and registration of all immobilizer system ignition key IDs. Refer to [Additional Service When Replacing Control Unit: Special Repair Requirement] Additional Service When Replacing Control Unit Special Repair Requirement.
3 Perform [VIN Registration] VIN Registration.
4 Perform [Accelerator Pedal Released Position Learning] Testing and Inspection.
5 Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
6 Perform [Idle Air Volume Learning] Idle Air Volume Learning.


INSPECTION END