How to Measure Alternator AC Ripple on CAN_H and CAN_L Without a Differential Probe
On a 12 V bench last quarter, a body-domain controller was dropping CAN frames at idle, but only after the engine had been running for eight to ten minutes. Key-on, engine-off: clean recessive and dominant levels. Engine at 1,500 rpm with electrical load applied: the bus waveform developed a slow envelope, and the node missed […]