P2322: Reading an ignition circuit-high code without guessing the cylinder

The P2322 row in GM’s 2025 file describes a primary ignition low-side output that remains high during an on command. This is the source’s short-to-power classification. It is a command-dependent electrical finding, not a direct test of the spark plug or combustion quality.

Conditions behind the stored result

Ignition must be synchronized, engine speed must exceed 1,400 rpm and the ignition counter must advance sufficiently. The table specifies a 0.4-second interval and two-trip reporting. These details mean a stopped-engine voltage reading, even if high, does not establish the same result.

A meaningful verification distinguishes whether the output is high throughout the commanded active interval or only outside it. The latter observation would require a different interpretation. Use the applicable service method rather than improvising access to an operating ignition circuit.

Resolve the naming relationship

The catalog title identifies coil H; this GM table identifies coil F. That discrepancy remains unresolved and prevents a trustworthy physical-coil recommendation here. Confirm the vehicle calibration and wiring assignment before selecting a circuit. The article deliberately preserves the electrical finding without inventing a cylinder mapping or treating the code as proof that a replacement coil will repair the fault.

Document scope and source

2025 GM 25OBDG07A Part 2 documented monitor only; its application-matrix filename join is unresolved. No model, engine or universal calibration applicability is inferred. These figures explain the cited controller logic, not a vehicle-specific repair instruction. Match the vehicle’s service information before applying them.

GM physical PDF page 703.