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.
JE: Integrated Ignition Coil Pack
JE: Introduction
JE1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
Are DTCs P0351, P0352, P0353, P2300, P2301, P2303 or P2304 present?
Yes | No |
|---|---|
For DTCs P0351, P0352 or P0353, GO to JE2 . For all others, GO to JE4 . | If sent to this test from JC, GO to JE3 . For symptoms without DTCs, GO to JE2 . For all others, RETURN to Section 3 , Symptom Charts for further direction. |
JE2 DETERMINE WHICH COIL IS NOT FIRING CORRECTLY
Note: Electronic ignition engine timing is entirely controlled by the PCM. Electronic ignition timing is not adjustable. Do not attempt to check base timing. You will receive false readings.
• Determine which coil is not firing correctly using the information from Pinpoint Test JB or a DTC and the table at the beginning of this pinpoint test.
• Record the suspect cylinder, coil and PCM pin number from the table.
Is the suspect cylinder number, coil driver and PCM pin number recorded?
Yes | No |
|---|---|
GO to JE3 . | To obtain the required information, REPEAT step, GO to JE2 . |
JE3 CHECK VPWR VOLTAGE TO THE COIL PACK
• Suspect Coil Assembly connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Coil Pack Assembly Connector, Harness Side | ( - ) |
|---|---|
VPWR - Pin 2 | Ground |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to JE4 . | REPAIR the open circuit. CARRY OUT the misfire monitor drive cycle. |
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.