A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Engine control unit Suzuki Swift 1.3 Denso 33920-62J1 MB112300-0392
Vendors's code: 33920-62J1
Product code: MB112300-0392
Barcode:
Code 39:
ISBN:
€284.55
Price
€284.55
€350.00
Price
€350.00
Ask about the product
Engine control unit Suzuki Swift 1.3 Denso 33920-62J1 MB112300-0392
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€30.00
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€30.00
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(Poland)
Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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Will the 33920-62J1 ECU fit your Suzuki Swift 1.3?
This is a used Denso engine ECU in good condition, marked 33920-62J1 and MB112300-0392. We always confirm the fit against the label – choose the locked or unlocked version.
Engine control unit Suzuki Swift 1.3 Denso 33920-62J1 MB112300-0392
This used Denso 33920-62J1 engine computer for the Suzuki Swift 1.3 processes sensor signals and calculates the engine’s operating parameters. The label shows the following markings: K1, M13 2WD MTA EU, 33920-62J1, 062J1, MB112300-0392. The marking “M13 2WD MTA EU” on the label indicates the version with the M13 engine and two-wheel drive (2WD) for the European market.
Numbers on the label
- 33920-62J1 – Suzuki part number
- MB112300-0392 – Denso number
- 062J1 – additional marking
Every character must match, including the final letters. If you are not sure, send us a photo of the label.
When the ECU may be faulty
- the starter cranks but the engine does not fire,
- the diagnostic tool cannot connect to the ECU,
- an engine warning light and fault codes that remain after replacing sensors,
- signs of moisture or corrosion on the connectors or circuit board.
Before replacing the ECU, check the power supply, earths and wiring loom – a damaged wire or connector can cause similar symptoms.
Locked or unlocked?
There are two variants: locked, with the previous vehicle’s data and immobiliser, for garages, and unlocked, which we prepare before dispatch.
Not every unlocking method is possible for every ECU – it depends on the number, the software and the car’s immobiliser. Before ordering the unlocked version, ask us about the options for the 33920-62J1 ECU.
Read more about the variants on our Locked & Unlocked ECUs page.
Questions and answers
| Can I fit an ECU with a different number suffix? |
|---|
| A different suffix can mean a different software or hardware version. Send us a photo of the label and we will check whether the 33920-62J1 ECU is suitable. |
| Will the ECU start the engine straight after fitting? |
| The locked version will not – it needs programming and matching to the immobiliser. With the unlocked version it depends on the preparation method, which we agree before purchase. |
| What condition is the ECU in? |
| It is a used part, fully working and in good condition. The warranty period is shown in the product features table. |
Not sure which variant to choose? Email contact@auto24parts.com with the numbers from your label – we will check the available options.
