22.6 Ram – Cummins, EcoDiesel ve Hurricane

Research frame

This is a research heading from the source atlas. The heading alone is not OEM service data or a failure-rate claim; model/generation/market identity, official campaigns and measurement evidence remain separate.

Which systems should be separated?

• Evaluate fuel supply, rail target/actual pressure, injector balance, charge-air path and EGR/DPF/SCR in the same event capture.
• For network faults, evaluate source ECU, gateway path, power/ground and wake/sleep behaviour together.

Evidence collection sequence

1. Capture low-pressure supply, rail target/actual, MAF/MAP, boost and exhaust temperature during crank and load.
2. Measure CAN-H/CAN-L bias and termination under the fault condition, not only key-on; capture message timing with source address.

Risk of false generalization

• A single DTC or user symptom is not a parts diagnosis; confirm with measurements and physical evidence.

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