P1361 — Ignition coil 2 control short circuit to positive

Diagnostic algorithm

1. Connect scan tool, record DTC(s), freeze frame and live data for coil 2 and related parameters.
2. Visually inspect coil 2, connector and wiring route for burns, chafing, corrosion, or repair sections. Pay attention to areas near engine mounts, harness clamps, firewall openings.
3. With ignition OFF, unplug coil 2 connector and inspect terminals for corrosion, bent pins or evidence of arcing. Repair or clean if needed.
4. With key ON (engine OFF) backprobe the coil control terminal: measure DC voltage to battery negative. Normal: near battery voltage when OFF and pulsed/low when fired. If you read constant battery voltage or near B+, suspect short to positive.
5. With coil disconnected, clear codes and crank/drive to see if the code returns. If code clears and does not return, the coil or connector may be the cause; if it returns, suspect wiring or ECU.
6. Measure continuity/resistance between the coil control circuit and battery positive. A low resistance/continuity indicates a short to positive. Also check continuity to supply circuits and other nearby power sources.
7. Swap coil 2 with a known-good coil from another cylinder (if serviceable) and re-test. If the code moves with the coil, replace the coil. If it stays on cylinder 2, continue wiring/ECU diagnostics.
8. Backprobe the control wire with an oscilloscope while cranking/running to verify expected switching waveform. Absence of switching or constant battery-level indicates short to positive or driver failure.
9. If wiring and coil check good, perform continuity tests between coil control pin and ECM driver pin; inspect ECM connector for corrosion or bent pins.
10. If wiring harness is repaired, re-test. If harness and coil good and control circuit shows direct short to B+ at ECM output, consider ECM repair or replacement per manufacturer procedures.