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.
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HOMESERVICE MANUALSMAZDA1993B2200 BASE, 2D PICKUP EXTRA CAB, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTS - EFICOMPUTERIZED ENGINE CONTROLSPOWERTRAIN CONTROL MODULE (EXCEPT NAVAJO)
1993 Mazda B2200 Base, 2D Pickup Extra Cab, Automatic
Powertrain Control Module (Except NAVAJO)
1993 Mazda B2200 Base, 2D Pickup Extra Cab, AutomaticSECTION Powertrain Control Module (Except NAVAJO)
- Locate Electronic Control Unit (ECU) or Powertrain Control Module (PCME). See ECU/PCME LOCATION table. Connect Engine Signal Monitor (49-9200-162) to ECU/PCME. See Fig 1 . Check voltage at each terminal of ECU/PCME. If input and output component voltage readings are not as specified, check faulty component. See PIN VOLTAGE CHARTS article, appropriate information in TESTS W/CODES article in the ENGINE PERFORMANCE section, and testing for appropriate component in this article.
- If input and output component voltages are as specified and ECU/PCME voltage is incorrect, replace ECU/PCME.
CAUTION:
DO NOT apply voltage to terminals "A" and "B" of engine signal monitor. See Fig 1
.
ECU/PCME LOCATION
| Application | Location |
|---|---|
| B2200, B2600i, RX7 & 929 | Behind Passenger Front Side Trim Panel |
| Miata & MPV | Under Passenger Front Floor Mat |
| MX-3, Protege & 323 | Behind Center Console |
| MX-6 & 626 | Behind Center Console Top Cover |
RENDER: 1.0x
NO RELATED
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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.