Ignition Coil Power Source
WARNING: This page is about a different car, the 1998 Infiniti Q45 and 1998 Infiniti I30. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Disconnect ignition coil harness connector. Turn ignition on. Connect DVOM negative lead to ground and proceed as follows:
- On I30, individually connect positive lead to each Red wire.
- On Q45, individually connect positive lead to each Black/White wire.
On all models, battery voltage should be present on each circuit.
- If battery voltage is not present, turn ignition off and proceed as follows:
- On I30, check harness continuity between ignition coil and fuse block. If continuity is present, check continuity of Black/Red wire between fuse block and ignition switch.
- On Q45, check 30-amp fuse in fuse box. If fuse is okay, check harness continuity between ignition coil and ignition switch, and harness continuity of White/Black wire between ignition switch and battery.