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 MANUALSVOLVO2009C70 AUTOMATICREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTGAUGES & INSTRUMENT PANELSELECTRONICS - DESIGN AND FUNCTION - 2 OF 4DRIVER INFORMATION MODULE (DIM) (2006-2013)SYSTEM OVERVIEWSIGNALS

2009 Volvo C70 Automatic

System Overview: Signals

2009 Volvo C70 AutomaticSECTION Signals

The following table summarizes input and output signals to and from the driver information module (DIM). The signal types are divided into directly connected signals and Controller area network (CAN) communication. The illustration below (Fig 1) displays the same information with the Volvo component designations.

Input signals	Output signals
Directly connected:	Directly connected: (Power supply unless otherwise stated)
Malfunction indicator lamp (MIL).	-
Via Controller Area Network (CAN) communication:	Via Controller Area Network (CAN) communication:
Brake control module (BCM) (4/16) Central electronic module (CEM) (4/56) Engine control module (ECM) (4/46) Phone module (PHM) (16/60) Supplemental Restraint System Module (SRS) (4/9) Transmission Control Module (TCM) (4/28) Steering wheel module (SWM) (3/254). Convertible Roof Module (CRM) (4/59) (only applies to C70)	Brake control module (BCM) (4/16) Central electronic module (CEM) (4/56) Phone module (PHM) (16/60) Supplemental Restraint System Module (SRS) (4/9) Multimedia module (MMM) (16/108) Climate control module (CCM) (3/112).

Fig 1: Identifying Driver Information Module (DIM) Components

Courtesy of VOLVO CARS CORPORATION

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.