ECM and Ignition Keys
Thread Starter
|
New User
Joined: Jan 2004
Posts: 6
Likes: 0
From: yucca valley
ECM and Ignition Keys
I have been told that to make a replica of my ignition key, I have to go to the dealer and make an appointment for this.
Question: If I buy a replacement ECM on eBay, will my old key work properly?
Thanks.
Question: If I buy a replacement ECM on eBay, will my old key work properly?
Thanks.
Cargo Master
Joined: May 2001
Posts: 3,208
Likes: 13
What year are talking about. From what I have just read the the answer is no the pats module talks to the PCM at least on a 2001 model.
The PATS transceiver module communicates with the encoded ignition key. The module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends data to the PCM.
The control functions are contained in the PCM. This module carries out all of the PATS functions, such as receiving the identification code from the encoded ignition key and controlling the engine enable. The PCM initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
All elements of the PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.
The PATS uses a visual theft indicator. The indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS concern, this indicator will either flash rapidly or glow steadily when the ignition switch is turned to RUN or START. The PATS system also flashes the theft indicator every two seconds at ignition OFF to act as a visual deterrent.
The following will activate the PATS and will disable the vehicle from starting:
incorrectly encoded ignition key
damaged encoded ignition key
unprogrammed key
non-encoded key (key has no electronics)
damaged wiring
damaged transceiver
damaged PCM
The PATS transceiver module communicates with the encoded ignition key. The module is located behind the steering column shroud and contains an antenna connected to a small electronics module. During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends data to the PCM.
The control functions are contained in the PCM. This module carries out all of the PATS functions, such as receiving the identification code from the encoded ignition key and controlling the engine enable. The PCM initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.
All elements of the PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.
The PATS uses a visual theft indicator. The indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS concern, this indicator will either flash rapidly or glow steadily when the ignition switch is turned to RUN or START. The PATS system also flashes the theft indicator every two seconds at ignition OFF to act as a visual deterrent.
The following will activate the PATS and will disable the vehicle from starting:
incorrectly encoded ignition key
damaged encoded ignition key
unprogrammed key
non-encoded key (key has no electronics)
damaged wiring
damaged transceiver
damaged PCM
Thread Starter
|
New User
Joined: Jan 2004
Posts: 6
Likes: 0
From: yucca valley
ECM and keys
My vehicle is 2003 Ford Ranger 2.3L, 5 speed manual tranny.
My truck is getting progressively worse and erratic. All symptoms disappear when I disconnect the battery for 5 minutes. It then runs fine for a few days. I wanted to buy an ECM on eBay just in case. But then I remembered about the keys married to the ECM issue.
Any solutions out there?
My truck is getting progressively worse and erratic. All symptoms disappear when I disconnect the battery for 5 minutes. It then runs fine for a few days. I wanted to buy an ECM on eBay just in case. But then I remembered about the keys married to the ECM issue.
Any solutions out there?
Freshman User
Joined: Dec 2004
Posts: 42
Likes: 0
From: Dartmouth, Nova Scotia
