DRIVER INFORMATION MODULE (DIM) Volvo XC70 II

DRIVER INFORMATION MODULE (DIM)

The driver information module (DIM) (5/1) receives information from the central electronic module (CEM) about which message is to appear in the display. A message will be displayed if there is a fault in any of the checks run by the system.

To increase the security of the immobilizer system, the following control modules are linked to each other with codes.

1. central electronic module (CEM)
2. engine control module (ECM).
3. Keyless vehicle module (KVM) (only vehicles with the keyless locking system)
4. ignition antenna unit (IAU)
5. steering Column Lock Module (SCL) (does not apply to USA/CAN-market).

Codes must be programmed when replacing the control module in order for the vehicle to start. Furthermore, the serial number for the Brake control module (BCM) is checked by the Engine control module (ECM) before the Engine control module (ECM) permits the vehicle to start. This requires that the serial number in the Brake control module (BCM) be entered into the Engine control module (ECM) when replacing the Brake control module (BCM) or replacing the Engine control module (ECM). This occurs automatically when downloading software into the new control module.

Remote keys can be added and erased. When programming remote keys for a vehicle, the transponder and remote control are programmed at the same time. A maximum of 6 transponder IDs and their remote control keys can be programmed into the vehicle. The transponder and remote control IDs are stored in the central electronic module (CEM) in cars without the keyless locking system.

In cars with the keyless locking system, only the transponder ID is stored in the central electronic module (CEM). ID of the keyless function is stored in the keyless vehicle module (KVM) and also saved in the Central electronic module (CEM).

The erase function is used when the customer wishes to prevent one or more remote keys from being used to start the vehicle. The remote keys may have been stolen and could be traced back to the vehicle.

Remote keys are programmed via the Software Manager.

The number of programmed remote keys that are stored in the Central electronic module (CEM) can be read off via the menu system in the infotainment display.

Scheme 1057

The start inhibition system is a comprehensive function of the vehicle security system. The logic for start inhibition is in the engine control module (ECM). The system for start inhibition reads off a number of values from the controller area network (CAN). These values are used to determine whether the criteria for the engine control module (ECM) to activate the starter motor are met. The system for start inhibition reads off whether the immobilizer check is OK or not.

There are a number of functions in the car's security system

1. Immobilizer
2. Steering column lock
3. Key warning
4. Alcolock (option)
5. Remote-controlled immobilization (option, only certain markets).

The various functions depend on different control modules and components.

The following are included in the immobilizer system

1. Central electronic module (CEM)
2. Keyless vehicle module (KVM) (only vehicles with the keyless locking system)
3. Ignition antenna unit (IAU)
4. Engine control module (ECM)
5. Brake control module (BCM)
6. Phone module (PHM) (only vehicles with remote-controlled immobilization).

The following are included in the steering column lock system

1. Central electronic module (CEM)
2. Engine control module (ECM)
3. Brake control module (BCM)
4. Transmission control module (TCM)

The following are included in the key warning system

1. Central electronic module (CEM)
2. Driver information module (DIM)
3. Keyless vehicle module (KVM) (only vehicles with the keyless locking system)

Included in the alcolock system (not in vehicles with the keyless entry locking system)

1. Central electronic module (CEM)
2. Driver information module (DIM)
3. Remote Receiver Module (RRX)

Definitions

Activated system: The system means that the vehicle cannot be started.

Deactivated system: Key check has been carried out and the remote key has been approved. The system permits the car to start.

The tables below summarize the input and output signals to the units in the system for the immobilizer. The signal types are divided into directly connected signals, serial communication and controller area network (CAN) communication.

CENTRAL ELECTRONIC MODULE (CEM) (4/56)

IGNITION ANTENNA UNIT (IAU) (16/65)

ENGINE CONTROL MODULE (ECM) (4/46)

BRAKE CONTROL MODULE (BCM) (4/16)

TRANSMISSION CONTROL MODULE (TCM) (4/28)

DRIVER INFORMATION MODULE (DIM) (5/1).

PHONE MODULE (PHM) (16/60)

Scheme 1058

The infotainment control module (ICM) has an integrated display and keypad unit.

The display shows information about the function which is active. It also displays information when selecting functions and preferences for the system. The graphic display consists of a field with 256*64 pixels.

The infotainment control module (ICM) has inputs and outputs for

1. power supply
2. ground
3. The controller area network (CAN)
4. LIN-communication
5. MOST network

When replacing the control module reprogramming is required.

The control module can be diagnosed.

Scheme 1059

There are two remote controls for the infotainment system. The navigation system remote control can be used to control the navigation system remotely.

The IR receiver is located on the front of the infotainment control module (ICM).

Scheme 1060

Remote control infotainment can be used to activate most functions remotely that can be controlled via the keypads on the Infotainment Control Module (ICM). Climate control module (CCM) and via the buttons on the steering wheel.

The IR receiver is located on the front of the infotainment control module (ICM).