Ignition Coil Power Source
- Disconnect ignition coil 2-pin harness connector. Turn ignition on. Measure voltage at appropriate wire at ignition coil harness connector. See IGNITION COIL POWER SOURCE TERMINAL IDENTIFICATION table.
- If battery voltage exists, check ignition coil resistance. See IGNITION COIL RESISTANCE . If battery voltage does not exist, check continuity of entire circuit between battery and ignition coil, including fusible link and ignition switch. See appropriate wiring diagram in WIRING DIAGRAMS article.
IGNITION COIL POWER SOURCE TERMINAL IDENTIFICATION
| Application | Wire Color |
|---|---|
| Altima & Sentra | Black/Red |
| Frontier, Pathfinder & QX4 | Black/White |
| Maxima | Red |
| Quest | Brown |