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.
ENS | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to KC33 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
KC33 CHECK THE ENS CIRCUIT FOR VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Fuel Pump Control Module Connector, Harness Side | ( - ) |
|---|---|
ENS | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to KC34 . |
KC34 CHECK THE ENS CIRCUIT FOR CORRECT RESPONSE
• Ignition OFF.
• Fuel Pump Control Module connector connected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) RCM Connector, Harness Side | ( - ) |
|---|---|
ENS | Ground |
Is the voltage greater than 10.5 V?
Yes | No |
|---|---|
INSTALL a new RCM. REFER to the Workshop Manual Section 501-20B, Supplemental Restraint System. Clear the PCM DTCs. REPEAT the self-test. | INSTALL a new Fuel Pump Control Module. REFER to the Workshop Manual Section 303- 04, Fuel Charging and Controls. Clear the PCM DTCs. REPEAT the self-test. |
KC35 CHECK THE IES CIRCUIT FOR AN OPEN
• PCM connector disconnected.
• For F-150,
• BCM-F connector disconnected.
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.