Description
Part Description
This engine control module (ECM) was removed from a 2008 Scion TC and has been professionally inspected for functionality. The unit is currently on our shelf and ready for immediate shipment. This electronic brain box controls critical engine functions and has been tested to ensure proper operation.
The engine control module is the computer that manages your vehicle’s engine performance, fuel injection, ignition timing, and emissions systems. ECMs commonly fail due to electrical surges, water damage, or internal component wear over time. When your ECM fails, you may experience no-start conditions, poor fuel economy, rough idling, or check engine lights that won’t clear.
At 603 Auto Salvage, we maintain over 50,000 quality used parts from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team carefully inspects each electronic component before it goes on the shelf. Browse our extensive inventory online or call us to verify compatibility and availability for your specific vehicle needs. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Engine Control Module (ECM) – Manual Transmission |
| Interchange # | 51666 |
| OEM Part Number | 89661-21510 |
| Side | N/A |
| Part Grade | X — Inspected electronic control module, tested and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for tested electronic components) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 SCION SCIOTC |
| VIN | N/A |
| Vehicle Stock # | PCM0590 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module (ECM) – Manual Transmission:
| ✅ Connector Integrity | All electrical connectors inspected for damage and corrosion |
| ✅ Housing Condition | ECM case checked for cracks, water damage, or physical damage |
| ✅ Pin Condition | All connector pins verified straight and undamaged |
| ✅ Internal Function | Electronic components tested for proper operation |
| ✅ Part Number Verification | OEM part number confirmed and documented |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #51666, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2008-2010 | Scion | TC | Manual transmission models only |
| 2008-2010 | Toyota | Camry | 2.4L engine with manual transmission – verify part number |
| 2009-2010 | Toyota | RAV4 | 2.4L engine applications – confirm compatibility |
| 2008-2009 | Toyota | Corolla | Certain 2.4L manual transmission models |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
Warranty & Shipping
Frequently Asked Questions
Will this ECM work in my 2008 Scion TC?
This ECM is specifically from a 2008 Scion TC with manual transmission. You’ll need to verify your vehicle’s part number matches 89661-21510 for proper compatibility.
Does this engine control module need to be programmed?
Yes, most ECMs require programming to your vehicle’s VIN and specifications. Contact a qualified technician or dealership for proper programming after installation.
What are signs that my ECM is failing?
Common symptoms include no-start conditions, rough idling, poor fuel economy, transmission shifting issues, and persistent check engine lights that return after clearing codes.
How much does it cost to ship an ECM to my location?
ECMs ship via FedEx Ground with costs ranging from $15-$30 in New England to $40-$65 on the West Coast depending on your exact location.
Is this the same ECM used in other Toyota vehicles?
This ECM may be compatible with certain Toyota models using the same 2.4L engine and manual transmission, but you must verify the exact part number for your specific application.
What warranty comes with this used ECM?
We provide a 90-day warranty on this tested electronic component, covering defects in the part itself but not programming or installation issues.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Toyota Part Number | 89661-21510 |
| Interchange Number | 51666 |
| Stock Number | PCM0590 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $800-$1200 | 1 year | Brand new, longest wait time |
| Aftermarket | $400-$600 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $125-$200 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
Installation Notes
- Disconnect battery for at least 10 minutes before removing old ECM
- Take photos of connector positions before disconnecting wiring harnesses
- Handle ECM carefully – avoid static electricity by grounding yourself first
- Do not force connectors – they should click into place easily when properly aligned
- Have ECM programmed by qualified technician before expecting normal operation
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
Estimated Shipping Costs by Region
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 90-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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