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Home >> Ford >> 2013 >> Edge SEL, 2.0L Eng VIN 9 >> Repair and Diagnosis >> External Pages >> Different car >> Section 264 (Anti-Theft System - Passive Anti-Theft System (Pats)) >> Diagnosis And Testing >> Anti-Theft - With Intelligent Access (IA) >> Pinpoint Tests >> Pinpoint Test J: The Engine Does Not Start/Unable To Transition The Ignition Out Of OFF >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

During each vehicle start sequence, when the start/stop switch is pressed, the Remote Function Actuator (RFA) activates all 3 passive start antennas, which send out a low frequency signal. If an Intelligent Access (IA) key is within range of a passive start antenna, the low frequency signal activates the IA  key. When the IA  key is activated it sends a high frequency signal to the Tire Pressure Monitor (TPM) module. The TPM  module communicates with the RFA  module. If the RFA  module determines that a programmed IA  key is in the vehicle, it allows the ignition to transition out of off or lets the engine start.

If the vehicle has a failure of any passive start antenna, the battery in the IA  key, or the TPM  module, the vehicle can experience a Passive Anti-Theft System (PATS) no-start. However, in the event of one of these failures, the IA  key can be placed in the backup slot (located in the center console) to allow the vehicle to start. The backup transceiver is located next to the backup slot and activates an IA  key if it is placed in the slot. The backup transceiver is hardwired to the RFA  module and when it is activated, sends out a low frequency signal. If a programmed IA  key is in the backup slot when the backup transceiver is activated, it activates the IA  key and the identification code is sent back to the RFA  module through the backup transceiver.

Once the RFA  module determines that a programmed IA  key is inside the vehicle and receives a request to start the engine, it communicates with the Body Control Module (BCM) over the Medium Speed Controller Area Network (MS-CAN). Once the BCM  receives the command from the RFA  module, it communicates with the PCM over the High Speed Controller Area Network (HS-CAN). Once the BCM  initializes and communicates with the RFA  module and the PCM, it checks the ID of each module and compares it with the module ID stored in its own memory. If the RFA  module and PCM IDs match the IDs stored in the BCM  , then PATS  enables the starter relay and fuel injectors and allows the engine to start.

This pinpoint test is intended to diagnose the following: 

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