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New Member
- Joined
- Sep 14, 2025
- Messages
- 1
- City
- Bloomington
- State - Country
- IL - USA
- Vehicle Year
- 1997
- Vehicle
- Ford Ranger
- Drive
- 2WD
- Engine
- 2.3 (4 Cylinder)
- Transmission
- Manual
Hello all,
Lifetime Ranger rider/driver here, first time forum user. I have a 1997 Mazda B2300 whose only feature is a tach, and over the past few weeks I have been diagnosing a crank w/o start + no OBD communication issue.
After browsing and trying the common solutions of changing out the fuses (yes, including the cigarette lighter fuse) to fix my lack of OBD communication, I've decided to tackle the ground wire in the attached photo. I know it's a ground because the ground side is still on the screw; unfortunately, I have no idea of what it's supposed to be grounding, and I'm wondering is this my ECU ground? Or is it otherwise related to it?
I'm open to any help and I'll answer questions about what work I've already done (new fuel pump, checked spark, idles on starting fluid, tried manually powering pump and confirmed pressure at rail, inertia switch reset).
Lifetime Ranger rider/driver here, first time forum user. I have a 1997 Mazda B2300 whose only feature is a tach, and over the past few weeks I have been diagnosing a crank w/o start + no OBD communication issue.
After browsing and trying the common solutions of changing out the fuses (yes, including the cigarette lighter fuse) to fix my lack of OBD communication, I've decided to tackle the ground wire in the attached photo. I know it's a ground because the ground side is still on the screw; unfortunately, I have no idea of what it's supposed to be grounding, and I'm wondering is this my ECU ground? Or is it otherwise related to it?
I'm open to any help and I'll answer questions about what work I've already done (new fuel pump, checked spark, idles on starting fluid, tried manually powering pump and confirmed pressure at rail, inertia switch reset).
