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)
Harness Side
| Circuit | Pin |
|---|---|
| RDINJPWR (Reductant Injector Power) | 2 |
| RDINJGND (Reductant Injector Ground) | 1 |
Harness Side
| Circuit | Pin |
|---|---|
| RDINJPWR (Reductant Injector Power) | 61 |
| RDINJGND (Reductant Injector Ground) | 62 |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.