PNP relay only in M/T max?
06-28-2016, 06:40 AM
#1
Senior Member
Thread Starter
Join Date: Apr 2016
Location: Florida
Posts: 972
PNP relay only in M/T max?
Changed the starter a while back and had to clarify.
While replacing the starter there is no need to check the PNP Relay on the A/T models? Just the M/T models?
Thanks
While replacing the starter there is no need to check the PNP Relay on the A/T models? Just the M/T models?
Thanks
06-28-2016, 08:37 PM
#2
The term PNP stands for Park Neutral Position. In the automatic trans cars, the starter circuit has a PNP relay. In the manual trans car, there is a clutch interlock relay. The cover on the relay box under the hood by the battery has the relay labeled INHIB (Inhibitor) regardless of the transmission.
These 2 relays do the same thing, close the electrical circuit between the ignition switch and the starter solenoid. The difference is in what causes the relay to energize and close the circuit.
If you have a known bad starter and replace it, there is no need to check the relay, whatever it may be called. If the starter cranks the engine over when you turn the ignition key, the relay has just tested good.
These 2 relays do the same thing, close the electrical circuit between the ignition switch and the starter solenoid. The difference is in what causes the relay to energize and close the circuit.
If you have a known bad starter and replace it, there is no need to check the relay, whatever it may be called. If the starter cranks the engine over when you turn the ignition key, the relay has just tested good.
06-29-2016, 05:37 AM
#3
Senior Member
Thread Starter
Join Date: Apr 2016
Location: Florida
Posts: 972
The term PNP stands for Park Neutral Position. In the automatic trans cars, the starter circuit has a PNP relay. In the manual trans car, there is a clutch interlock relay. The cover on the relay box under the hood by the battery has the relay labeled INHIB (Inhibitor) regardless of the transmission.
These 2 relays do the same thing, close the electrical circuit between the ignition switch and the starter solenoid. The difference is in what causes the relay to energize and close the circuit.
If you have a known bad starter and replace it, there is no need to check the relay, whatever it may be called. If the starter cranks the engine over when you turn the ignition key, the relay has just tested good.
These 2 relays do the same thing, close the electrical circuit between the ignition switch and the starter solenoid. The difference is in what causes the relay to energize and close the circuit.
If you have a known bad starter and replace it, there is no need to check the relay, whatever it may be called. If the starter cranks the engine over when you turn the ignition key, the relay has just tested good.
So I was searching the engine for the PNP relay to take the guess work out of it.
I just went ahead and replaced the starter and the car started fine.
But If the car is in a no start it is something they recommend checking first.
It's labeled inhibitor so I didn't think it was a PNP relay. I wound up just taking the part in question to the store and they tested it on a machine.
Thread
Thread Starter
Forum
Replies
Last Post
humphrey367
4th Generation Maxima (1995-1999)
10
06-17-2016 03:16 PM