Pinpoint Test L: The Vehicle Does Not Start/Unable To Transition The Ignition Out Of OFF

Anti-Theft - With Intelligent Access (IA)

Pinpoint Test L: The Vehicle Does Not Start/Unable To Transition The Ignition Out Of OFF

Normal Operation

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 (Intelligent Access) key. When the IA (Intelligent Access) key is activated it sends a high frequency signal to the Remote Functions Receiver (RFR) module. The RFR (Remote Functions Receiver) module communicates with the RFA (Remote Function Actuator) module. If the RFA (Remote Function Actuator) module determines that a programmed IA (Intelligent Access) key is in the vehicle, it allows the ignition to transition out of off or let the engine start.

The vehicle experiences a PATS (Passive Anti-Theft System) no-start in the event there is a failure of any passive start antenna, the battery in the IA (Intelligent Access) key, or the RFR (Remote Functions Receiver) module. However, in the event of one of these failures, the IA (Intelligent Access) key can be placed next to the PATS (Passive Anti-Theft System) transceiver (located in the steering column) to allow the vehicle to start. The PATS (Passive Anti-Theft System) transceiver activates an IA (Intelligent Access) key if it is placed in close proximity. The PATS (Passive Anti-Theft System) transceiver is hardwired to the RFA (Remote Function Actuator) module.

Once the RFA (Remote Function Actuator) module determines that a programmed IA (Intelligent Access) key is inside the vehicle and receives a request to start the engine, it communicates with the PCM over the High Speed Controller Area Network (HS-CAN). Once the RFA (Remote Function Actuator) module and the PCM communicate, the RFA (Remote Function Actuator) module checks the ID of the PCM and compares it with the module ID stored in its own memory. If the RFA (Remote Function Actuator) module and PCM IDs match then the PATS (Passive Anti-Theft System) enables the starter relay and fuel injectors and allows the engine to start.

The IA (Intelligent Access) key disable feature prevents the engine from starting or the ignition from transitioning out of off if the IA (Intelligent Access) key has been disabled. For more information on the IA (Intelligent Access) key disable feature, refer to Antitheft and Alarm Systems.

This pinpoint test is intended to diagnose the following:

- Starting system concern

- Driveability concern

- PATS (Passive Anti-Theft System) concern

PINPOINT TEST L : THE VEHICLE DOES NOT START/UNABLE TO TRANSITION THE IGNITION OUT OF OFF

L1 CHECK FOR KEY NOT DETECTED

NOTE: Prior to performing any diagnostics press the unlock button on an IA (Intelligent Access) key to make sure the IA (Intelligent Access) key disable feature was causing the concern.

- Check the Front Control/Display Interface Module (FCDIM) while pressing the START/STOP switch.

Is KEY NOT DETECTED displayed?

Yes
GO to Pinpoint Test M Pinpoint Test M: KEY NOT DETECTED Is Displayed.

No
GO to L2.

L2 CHECK THE IPC (Instrument Panel Cluster) OPERATION

- Observe the Instrument Panel Cluster (IPC) operation while pressing the START/STOP switch.

Do some of the indicators in the IPC (Instrument Panel Cluster) illuminate?

Yes
GO to L3.

No
GO to L4.

L3 CHECK FOR RFA (Remote Function Actuator) MODULE DTCs

- Retrieve the RFA (Remote Function Actuator) module continuous DTCs.

Are any RFA (Remote Function Actuator) module DTCs present?

Yes
REFER to DTC Charts Anti-Theft - With Intelligent Access (IA).

No
The no-start condition is not PATS (Passive Anti-Theft System) -related. REFER to Starting System to diagnose the cause of the no-start condition.

L4 CHECK FOR COMMUNICATION WITH THE SCAN TOOL

- Refer to Inspection and Verification in Information Bus, and follow the procedure to establish a session with the vehicle Inspection and Verification.

Does the scan tool establish communication with the vehicle?

Yes
REFER to Steering Column to diagnose no power in RUN.

No
REFER to Information Bus to diagnose no communication with the RFA (Remote Function Actuator) module or the PCM.