Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2010FOCUS SES, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS THROUGH PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) - (EXCEPT DIESEL & HYBRID)PINPOINT TEST HH: EXHAUST GAS RECIRCULATION SYSTEM MODULE (ESM)INTRODUCTION
2010 Ford Focus SES, 4D Sedan, Standard
Pinpoint Test HH: Exhaust Gas Recirculation System Module (ESM): Introduction
2010 Ford Focus SES, 4D Sedan, StandardSECTION Introduction
This pinpoint test is intended to diagnose the following:
- ESM (9Y456)
- orifice tube assembly (9D477)
- differential pressure feedback exhaust gas recirculation (EGR) sensor pressure hoses
- vacuum lines
- harness circuits: DPFE, SIGRTN, EVR, VPWR and VREF
- powertrain control module (PCM) (12A650)
For PCM connector views or reference values, refer to REFERENCE VALUES .
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR PIN REFERENCE CHART
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series | 190-Pin | E21 E64 E63 E64 E48 |
EVR SIGRTN VREF SIGRTN DPFE |
| F-150 | 190-Pin | E63 E64 B52, E63 B58, E64, T43 E21 |
EVR SIGRTN VREF SIGRTN DPFE |
| F-Series Super Duty | 170 Pin | E63 E58 E57 E58 E21 |
EVR SIGRTN VREF SIGRTN DPFE |
| Mustang | 170 Pin | E63 E58 B40, E57 B41, E58, T41 E21 |
EVR SIGRTN VREF SIGRTN DPFE |
| All other vehicles | 170 Pin | E63 E58 E57 B41, E58, T41 E21 |
EVR SIGRTN VREF SIGRTN DPFE |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.