MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE
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2015–2017 source collection · Additional coverage

Starting System — Pinpoint Test(S) — Pinpoint Test A : Engine Does Not Crank

Starting System - 2.3L EcoBoost (231kW &314PS)

Source configuration appliesSource reference 6,310HTML edition
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Starting System — original illustration 1, reference 6310Original colors & callouts · Select to enlarge
Starting System — original illustration 2, reference 6310Original colors & callouts · Select to enlarge

BJB starter relay pin 1 BJB starter relay pin 2

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

No

GO to A21

A14 CHECK THE VOLTAGE TO THE STARTER RELAY

Measure:

Positive Lead Measurement / Action Negative Lead Ground BJB starter relay pin 3

Original table alignment retained · Scroll horizontally if needed

Starting System — original illustration 3, reference 6310Original colors & callouts · Select to enlarge

Is the voltage greater than 11 volts?

Yes

GO to A15

No

VERIFY BJB fuse 30 (30A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.

A15 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY

Ignition OFF.

With the transmission in PARK or NEUTRAL, momentarily connect a fused jumper wire:

Ford_Mustang_all_2015-2017.pdf · source reference 6310

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.