Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test
- CHECK ECM PART NUMBER
Check ECM part number to see whether it is blank ECM or not.
NOTE:- Part number of blank ECM is 23703 - *****.
- Check the part number when ordering ECM or with the one included in the label on the container box.
Is the ECM a blank ECM?
YES
GO TO STEP 2 .
NO
GO TO STEP 4 .
- SAVE ECM PART NUMBER
Read out the part number from the old ECM and save the number, following the programming instructions. Refer to "CONSULT Operation Manual".
NOTE:- The ECM part number is saved in CONSULT.
- Even when ECM part number is not saved in CONSULT, go to 3.
GO TO STEP 3 .
- PERFORM ECM PROGRAMMING
After replacing ECM, perform the ECM programming. Refer to "CONSULT Operation Manual".
NOTE:During programming, maintain the following conditions:
- Ignition switch: ON
- Electric load: OFF
- Brake pedal: Not depressed
- Battery voltage: 12-13.5 V (Be sure to check the value of battery voltage by selecting "BATTERY VOLT" in "Data monitor" of CONSULT.)
GO TO STEP 5 .
- REPLACE ECM
Replace ECM.
GO TO STEP 5 .
- PERFORM INITIALIZATION OF IVIS (NATS) SYSTEM AND REGISTRATION OF ALL IVIS (NATS) IGNITION KEY IDS
Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to DESCRIPTION .
GO TO STEP 6 .
- PERFORM VIN REGISTRATION
Perform VIN registration. Refer to DESCRIPTION .
GO TO STEP 7 .
- PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Perform accelerator pedal released position learning. Refer to DESCRIPTION .
GO TO STEP 8 .
- PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform throttle valve closed position learning. Refer to DESCRIPTION .
GO TO STEP 9 .
- PERFORM IDLE AIR VOLUME LEARNING
Perform idle air volume learning. Refer to DESCRIPTION .
END
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.