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 MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 109 (MODULE COMMUNICATIONS NETWORK SYSTEM)DIAGNOSTIC TESTSCOMMUNICATIONS NETWORKSYMPTOM CHART

2009 Ford Ranger 2D Pickup, 2.3 D, Automatic

Symptom Chart

2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Symptom Chart

WARNING: This page is about a different car, the 2008 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
The PCM does not respond to the scan tool, or no high speed controller area network (HS-CAN) communication	Fuse Wiring, terminals or connectors PCM Restraints control module (RCM) Occupant classification system module (OCSM) 4X4 control module Instrument cluster (IC) SJB	Go to Pinpoint Test A .
The occupant classification system module (OCSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors ABS module	Go to Pinpoint Test B .
The restraints control module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors RCM	Go to Pinpoint Test C .
The satellite radio receiver does not communicate with the scan tool	Fuse Wiring, terminals or connectors Satellite radio receiver	REFER to INFORMATION & ENTERTAINMENT SYSTEMS article.
The smart junction box (SJB) does not respond to the scan tool	Fuse Wiring, terminals or connectors SJB	Go to Pinpoint Test D .
The instrument cluster (IC) does not respond to the scan tool	Fuse Wiring, terminals or connectors IC	Go to Pinpoint Test E .
The four wheel drive (4X4) control module does not respond to the scan tool	Fuse Wiring, terminals or connectors 4X4 control module	Go to Pinpoint Test F .
The ABS module does not respond to the scan tool or no International Standards Organization (ISO) 9141 network communication	Fuse Wiring, terminals or connectors ABS module	Go to Pinpoint Test G .
Intermittent no high speed controller area network (HS-CAN) communication, one or more modules are not responding during network test	Wiring, terminals or connectors	Go to Pinpoint Test H .
No high speed controller area network (HS-CAN) communication, all modules are not responding	Fuse Wiring, terminals or connectors PCM RCM OCSM 4X4 control module IC SJB	Go to Pinpoint Test A .
No power to the scan tool	Fuse Wiring, terminals or connectors Scan tool	Go to Pinpoint Test I .

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.