MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Powertrain Control-Emissions Diagnosis

HD: Misfire Detection Monitor HD: Introduction

Powertrain Control-Emissions Diagnosis

Ford gasoline diagnostic supplementReference 5,152 / 6,619HTML edition
← Chapter contentsProcedure contents

Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.

• Inspect the crank pulley for wobble.

• Check for a loose crankshaft pulse wheel.

• Check the CKP sensor for damage.

Are the CKP sensor, crankshaft pulse wheel and the crank shaft pulley OK?

Yes

No

GO to HD20 .

REPAIR as necessary. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls and check for correct CKP sensor installation. RESET the keep alive memory (KAM). REFER to Section 2, Resetting The Keep Alive Memory (KAM).

For Edge,

F-150,

Fiesta 1.0L,

Fiesta 1.6L GTDI,

Focus,

KA,

MKC,

Mustang, and

Transit, COMPLETE the Misfire Monitor Neutral Profile Correction procedure using the scan tool.

For all others, COMPLETE the Misfire and Fuel Monitors drive cycle procedure to learn the profile. REFER to Section 2, On Board Diagnostic (OBD) Drive Cycle.

To verify the repair, RECREATE the original conditions that set the misfire DTC or caused the symptom using the freeze frame data and customer information. MONITOR the cylinder misfire data in Mode 6 - On Board Test Results and VERIFY the misfire count is below 10.

REFER to the scan tool manufacturers manual for specific information on the Mode 6 - On Board Test Results.

HD20 CHECK THE RECENT VEHICLE REPAIR HISTORY

Note: Misfire Profiles stored in non-volatile memory may need to be relearned if major engine work is done.

• Check the recent vehicle repair history to determine if any rotational components have been replaced such as:

◾ crankshaft ◾ crankshaft pulley

Source reference 5152

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.