EEC-IV 104-Pin Breakout Box
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2003 Mazda B4000, 2003 Mazda B3000, 2003 Mazda B2300, 2002 Mazda B4000, and 2002 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
If instructed, disconnect PCM harness connector. Inspect connector for damaged terminals, corrosion and loose wires. Repair as necessary. Install Breakout Box (418-049), leaving PCM disconnected. Breakout box is used to assist in performing voltage and resistance measurements at PCM harness connector without damage to connector. Breakout box may be also know as the BOB.