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 RJ: Reductant Tank Level: Introduction
This pinpoint test is intended to diagnose the following:
- reductant quality module
- reductant level sensor
- harness circuits: CAN2+, CAN2-, GND, RDL1, RDL2, RDL3, SIGRTN and VPWR
- reductant dosage control module (5H298)
- PCM (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| F-650/F-750, F-150, F-Series Super Duty | A | 3 2 1 4 |
CAN2- CAN2+ GND VPWR |
| Transit Connect | B | 2 3 |
GND VPWR |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Transit Connect | A | 84 65 |
CAN2- CAN2+ |
| All other vehicles | B | 15 14 |
CAN2- CAN2+ |
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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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