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Have a 07 Nissan versa come in with a crank but no start. No history on this vehicle whatsoever was brought in from a local car dealer. Believe it's from an auction. Immediately noticed the security light on and one key in the Ignition and another key in the side pocket of the door. I'm trying to figure out how to test the NATS system. I have two codes in memory. P1610-p1614. There is no information whatsoever on ProDemand. Looking for any kind of help on testing.
- Faulty or not programmed ignition key
- Faulty IMMU
- Faulty Engine Control Module (ECM)
What does this mean?
Tech notes
This code is usually triggered when a not registered or damaged key is used to start the engine. When the starting operation is carried out five or more times consecutively with the same unregistered key, the system will lock. If the problem occurs try disconnecting the car battery for about 30 minutes and then try starting the engine with a known registered key. If the problem persist you have to have the dealer erase the code and reprogram the keys again.
If problem persist after disconnecting the car battery, try the following:
ESCAPE FROM LOCK MODE
1. Turn ignition switch OFF.
2. Turn ignition switch ON with registered key. (Do not start engine.) Wait 5 seconds.
3. Return the key to OFF position.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine.
I've tried that procedure and still doesn't work. I am pointing towards the antenna that reads the key. Looking at the diagram shows 2signal wires that run to the BCM. Tried to scope the Green wire called RX , TX but has battery voltage all the time. Powers and grounds look good at the antenna. The pink wire Calls to be antenna signal (clock) but has no signal. There is absolutely no information on how to test the system. I do have key programmers but won't program A new key.
I don't know what kind of scan tool you have but you should be able to see inputs via the tool. A Nissan Consult 2 would be great and would fix your issues. I've never saw too many NATS modules or components fail. A LOT of keys seem to go bad. I can look up some info on Monday and see if that will help us out. That being said Nissan's pinpoint tests and information tend to be BAD.
I use the Verus Edge as my main scan tool. I also have key programmers as well. The scan tool would say no signal was received so I ordered the antenna should be here Monday but any information you give me is greatly appreciated. Thank you in advance ! Happy new year
P1610 is Lock Out
P1614 is Chain of IMMU-KEY-BCM cannot recieve the key ID signal.
Pin point test....if you want to call it that....
Has you do the following:
1. Confirm Code
2. Check NATS antenna installation
3. Attempt to start vehicle with another NATS key programmed to vehicle.
4. Check Power at Connect M21 Pin 1=Batt Voltage
5. Check NATS Antenna Amp. signal line 1. Connect M21 Pin 2. 0V before turning ignition switch on. Pointer should move right after moving ignition switch to ON. Supposed to use analog tester......
6. Check NATS Antenna Amp signal line 2. M21 Pin 4 same as above test.
7.Check NATS antenna amp ground. M21 Pin 3.
If all that checks out replace NATS antenna.
If not good, you could have bad circuitry or BCM.
I think you on the right track. LIke I said before Nissan's info sucks and I mostly just thru it out the window and do my own thing. That is usually faster and easier.
I am a little confused. I am at # 5. Check NATS Antenna Amp. signal line 1. Connect M21 Pin 2. 0V before turning ignition switch on. Pointer should move right after moving ignition switch to ON. Supposed to use analog tester. This doesnt move when i switch to on position. Also #6 Says to check NATS Ant Amp signal line 2 pin 4 same as above. What does that mean? I have batt voltage on this wire when i put in on position. Im sorry for the lack of knowledge on this system. I really wished i could find some training in this area.
It means in step 6 you should expect the same results as step 5 except your on pin 4 instead of 2. Make sure your getting your readings with the harness connected.
It definitely sounds like the Antenna Amp is not sending the signal to the BCM.
I would make sure the + and ground to the antenna amp are good.
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