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Clayso, Master Automobile Technician
Category: Pontiac
Satisfied Customers: 880
Experience:  ASE Master Certified Automobile Technician. 30 Years Experience.
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I have no power to neutral safety switch? Consistent, 2002

Customer Question

I have no power to neutral safety switch?
JA: Is the power loss consistent, or does it fluctuate?
Customer: Consistent
JA: What is the model/year of your Pontiac?
Customer: 2002 Grand Prix se
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes, checked all fuses and tried checking all wires. It's causing the key to stay locked and have to push up the cylinder and have know reverse lights.
JA: Anything else you think the mechanic should know?
Customer: Don't think so
Submitted: 1 year ago.
Category: Pontiac
Expert:  Clayso replied 1 year ago.

Hi There, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience.

From your description sounds like the Brake Transmission Shift Interlock (BTSI) fuse has no power. If there is no power at the BTSI fuse most likely the ignition switch is at fault. At the neutral switch there should be power orange or yellow wire at pin B. Pin F lt/green wire should have power when in reverse. The link below are for the neutral switch and the reverse lights.

Park Neutral Safety Switch Circuit

Reverse Lamps Circuit

Let me know if there is power at the BTSI fuse.

I hope this information is helpful. If you have any questions let me know. You can reply back to me through this thread at any time.

Expert:  Clayso replied 12 months ago.

Hi There,

I noticed you had viewed my answer, and I hope the information I gave was helpful. Let me know if you have followed through with my recommendations. If you have any questions, please let me know.

Thanks so much.