What are the guidelines and requirements for reprogramming the Engine Control Module on 2003 Toyota Corolla?

Starting in 2001, Toyota/Scion and Lexus vehicles feature flash reprogrammable Powertrain Control Modules (PCM). Reprogramming should follow Technical Service Bulletins. Use validated tools like the Toyota/Lexus scantool or J2534 interfaces. The process requires specific software and equipment, and must be uninterrupted to avoid damaging the vehicle controller.

OEM 2003 Toyota Corolla Engine Control Module

Engine Control Computer

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2003 Toyota Corolla ECM
Part Number: 89666-02290
$499.30 MSRP: $731.73
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: MEXICO SPEC;PART NUMBER LABEL=89666-02290
- Part Name Code: 89661
- Item Weight: 1.40 Pounds
- Item Dimensions: 10.2 x 7.6 x 3.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89666-02290
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2003 Toyota Corolla Submodels:
- CE, LE, S | 4 Cyl 1.8 L GAS
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2003 Toyota Corolla ECM
Part Number: 89666-02154
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89666-02153, 89666-02150, 89666-02152, 89666-02151
- Item Weight: 2.20 Pounds
- Item Dimensions: 12.7 x 9.9 x 4.0 inches
- Condition: New
- SKU: 89666-02154
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Corolla Submodels:
- CE, LE, S | 4 Cyl 1.8 L GAS
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2003 Toyota Corolla ECM
Part Number: 89666-02131
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: PART NUMBER LABEL=89666-02131
- Replaces: 89666-02130
- Part Name Code: 89661
- Item Weight: 2.20 Pounds
- Item Dimensions: 12.7 x 9.9 x 4.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89666-02131
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Corolla Submodels:
- CE, LE, S | 4 Cyl 1.8 L GAS
View related parts
2003 Toyota Corolla ECM
Part Number: 89666-02140
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Item Weight: 1.40 Pounds
- Item Dimensions: 10.0 x 7.5 x 3.4 inches
- Condition: New
- SKU: 89666-02140
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2003 Toyota Corolla Submodels:
- CE, LE, S | 4 Cyl 1.8 L GAS
View related parts
2003 Toyota Corolla ECM
Part Number: 89666-02300
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: PART NUMBER LABEL=89666-02300;MEXICO SPEC
- Part Name Code: 89661
- Item Weight: 1.40 Pounds
- Item Dimensions: 10.1 x 7.7 x 3.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89666-02300
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Corolla Submodels:
- CE, LE, S | 4 Cyl 1.8 L GAS

2003 Toyota Corolla Engine Control Module

Looking for affordable OEM 2003 Toyota Corolla Engine Control Module? Explore our comprehensive catalogue of genuine 2003 Toyota Corolla Engine Control Module. All our parts are covered by the manufacturer's warranty. Plus, our straightforward return policy and speedy delivery service ensure an unparalleled shopping experience. We look forward to your visit!

2003 Toyota Corolla Engine Control Module Parts Q&A

Q: What are the guidelines and requirements for reprogramming the Engine Control Module on 2003 Toyota Corolla?
A: Starting in 2001, Toyota/Scion and Lexus vehicles feature flash reprogrammable Powertrain Control Modules (PCM). Reprogramming should follow Technical Service Bulletins. Use validated tools like the Toyota/Lexus scantool or J2534 interfaces. The process requires specific software and equipment, and must be uninterrupted to avoid damaging the vehicle controller.