Starting System — Pinpoint Test(S) — Pinpoint Test A : Engine Does Not Crank — Starting System - 3.7L Duratec (227kW & 301PS) · Reference 6279

No	GO to A23

A12 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID (PARAMETER IDENTIFICATION)

Make sure the transmission is in PARK or NEUTRAL.

Using a diagnostic scan tool, view the PCM Parameter Identifications (PIDs).

Monitor the PCM PID ENG_CRANK while pressing the engine start/stop switch and the brake pedal (with automatic transmission) or fully apply the clutch pedal (with manual transmission).

Does the PID change from Inactive to Active?

Yes	GO to A13

No	GO to A28

NOTE: The following step uses a test light to simulate normal circuit loads. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.

A13 CHECK THE STARTER RELAY CONTROL OPERATION

Remove the BJB starter relay.

Measure:

Starting System — original illustration 1, reference 6279

Measurement Positive Lead Negative Lead / Action BJB starter relay pin 1 BJB starter relay pin 2

Original table alignment retained · Scroll horizontally if needed

Starting System — original illustration 2, reference 6279Original colors & callouts · Select to enlarge

Make sure the transmission is in PARK or NEUTRAL.

While pressing the engine start/stop switch and the brake pedal, observe the test light.

Does the test light illuminate when the engine start/stop switch is pressed?

Yes	GO to A14

Ford_Mustang_all_2015-2017.pdf · source reference 6279

Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.