2012 Nissan Juke No Start: No Power to Starter Signal Wire Issue

You’ve got a no-crank situation with no power at the starter signal wire. Most likely, the starter relay isn’t closing, or the control circuit (ignition switch, neutral safety switch, or clutch switch if manual) isn’t sending the signal. If you’ve got push-button start, the BCM or IPDM (Intelligent Power Distribution Module) could also be in play, but start with the basics.

If you hear no relay click when trying to start, I’d bet on a failed relay, bad ignition switch, or an open in the park/neutral safety circuit. If you have a push-button, the brake switch and BCM are also suspects.

Most likely culprits

• Starter relay — Common failure, especially if no click and no power at the signal wire.
• Ignition switch or push-button start module — If the relay isn’t getting the command, the switch or BCM may not be sending it.
• Neutral safety switch — If the car doesn’t see Park/Neutral, it blocks the starter signal.

How to narrow it down

1. Check for power at the starter relay control terminal with key in START. If no power, the issue is upstream (ignition switch, BCM, or neutral safety).
2. Listen/feel for relay click when you try to start. No click = relay not energized or failed.
3. Jump the starter relay (if accessible) with a fused jumper. If the starter cranks, the relay/control side is the problem.
4. Check brake pedal switch (push-button models) — If brake lights don’t work, the car won’t crank.
5. Wiggle shifter while holding START — If it cranks in a different position, suspect the neutral safety switch.
6. Scan for codes in BCM/IPDM — Even with no CEL, a code here can point to a failed module or switch.
7. Check battery voltage and grounds — Low voltage or bad ground can cause no-crank, but you’d usually see other symptoms.

Possible parts (if needed)

• Starter relay
• Ignition switch
• Neutral safety switch

A few questions

• Is this a push-button start or traditional key?
• Do the dash lights and accessories work normally with the key on?
• Have you checked for any security light flashing or immobilizer warnings?

Let me know the answers and what you find on the relay checks — that’ll pin it down fast.