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.
MKZ 2.0L,
Mustang 2.3L,
Navigator,
Taurus 2.0L,
Taurus 3.5L GTDI,
Transit 3.5L, and
Transit Connect 1.6L, GO to JF5 .
For all others, GO to JF6 .
JF5 CHECK THE SUSPECT COIL GROUND CIRCUIT FOR AN OPEN
• Measure the voltage between:
( + ) COP Connector, Harness Side | ( - ) COP Connector, Harness Side |
|---|---|
VPWR | GND |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
GO to JF6 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
JF6 CHECK THE SUSPECT COIL DRIVER CIRCUIT FOR AN OPEN
• Ignition OFF.
• PCM connector disconnected.
• Suspect Coil Assembly connector disconnected.
• Measure the resistance between:
( + ) PCM Connector, Harness Side | ( - ) COP Connector, Harness Side |
|---|---|
COP | COP |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
GO to JF7 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
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.