Pinpoint Test A: The Vehicle Does Not Start

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions
REFER to: Passive Anti-Theft System (PATS) - System Operation and Component Description .

Possible Sources
- Communication system concern
- Key not programmed
- PATS concern
- Starting system concern
- Powertrain system concern
- ABS module concern
NOTE: This pinpoint test requires a second programmed PATS key. If only one key is available, obtain a second programmed PATS key.

A1 CHECK THE OPERATION OF THE SECOND PROGRAMMED KEY

Using the second programmed PATS key, attempt to start the vehicle.

Does the second programmed key start the vehicle?

Yes	REPROGRAM the first PATS key. REFER to: Anti-Theft Key Programming - Scan Tool . TEST the system for normal operation. If the concern is still present, DISCARD the PATS key in question and program a new PATS key. REFER to: Anti-Theft Key Programming - Scan Tool .

GO to A2

A2 CHECK FOR COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE) AND THE BCM (BODY CONTROL MODULE)
- Ignition ON.
- Using a diagnostic scan tool, perform the network test.
Does the PCM and the BCM pass the network test?

Yes GO to A3

No REFER to: ETHERNET MODULE COMMUNICATIONS NETWORK .

A3 CHECK IF THE ENGINE CRANKS
- Attempt to start the engine.
Does the engine crank?

Yes The no-start condition is not PATS-related.

No GO to A4

A4 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) AND BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, perform the PCM and the BCM self-tests.
Are any PCM or BCM Diagnostic Trouble Codes (DTCs) present?

Yes REFER to the DTC Chart(s) .

No DIAGNOSE the starting system. REFER to the Diagnosis and Testing in the appropriate Starting article .