Visual Inspection and Diagnostic Pre-checks
Inspect the starter motor.
Inspect the starter motor mounting.
DIAGNOSIS AND TESTING > STARTING SYSTEM > PINPOINT TEST(S) > PINPOINT
TEST B : UNUSUAL STARTER NOISE > PINPOINT TEST B : UNUSUAL STARTER NOISE
B1 CHECK THE STARTER MOUNTING
Inspect the starter mounting bolts for looseness.
Is the starter motor mounted correctly?
Yes | GO to B2 |
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No | INSTALL the starter motor correctly. REFER to: Starter Motor . |
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B2 CHECK FOR STARTER NOISE
Ignition OFF.
Connect a remote starter switch between the starter solenoid C197A-1 ("B" terminal) and C197C-1 ("S" terminal).
Engage the starter and verify the noise is due to starter operation.
Is the noise due to the starter engagement?
Yes | REFER to: Starter Motor Drive Gear and Flywheel Ring Gear Inspection . |
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DIAGNOSIS AND TESTING > STARTING SYSTEM > PINPOINT TEST(S) > PINPOINT
TEST C : C113A:11 OR C113A:15
Refer to Electronic Engine Controls - 3.7L for schematic and connector information.
Normal Operation and Fault Conditions
The wake-up control circuit wakes up the PCM prior to the engine cranking. The PCM needs to wake up prior to a crank request so it has time to go through its initialization. The wake-up control circuit is controlled by the BCM. The BCM activates the wake-up control circuit when the driver door is opened or when the ignition is in the ON or START position.
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.