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 - 3.7L Duratec (227kW & 301PS)

Source configuration appliesSource reference 6,280HTML edition
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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 1, reference 6280Original 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 article 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:

Positive Lead

Measurement / Action

Negative Lead

Starting System — original illustration 2, reference 6280Original colors & callouts · Select to enlarge
Starting System — original illustration 3, reference 6280Original colors & callouts · Select to enlarge

BJB starter relay pin 3 BJB starter relay pin 5

Did the starter engage and the engine crank?

Yes

INSTALL a new starter relay.

Ford_Mustang_all_2015-2017.pdf · source reference 6280

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.