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.
Pinpoint Tests RK: Reductant Injector: Introduction
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
This pinpoint test is intended to diagnose the following:
- reductant injector
- harness circuits: RDINJPWR and RDINJGND
- reductant dosage control module (5H298)
- PCM (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Transit Connect | A | 2 1 |
RDINJGND RDINJPWR |
| All other vehicles | B | 1 2 |
RDINJGND RDINJPWR |
| Pin | Circuit |
|---|---|
| 75 | RDINJGND (Reductant Injector Ground) |
| 74 | RDINJPWR (Reductant Injector Power) |
| Pin | Circuit |
|---|---|
| 62 | RDINJGND (Reductant Injector Ground) |
| 61 | RDINJPWR (Reductant Injector Power) |
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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.
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