Scheme 822
The starter motor (6/25) is powered via the starter motor relay (2/35). The relay is controlled by the engine control module (ECM) (4/46). The start process is as follows
- The ignition key is turned to start position (position III)
- A high signal from the ignition switch (3/1) is transmitted to the engine control module (ECM) and starter relay via the central electronic module (CEM) and integrated relay/fusebox in the engine compartment. The engine control module (ECM) interprets this high signal as a request to activate the starter motor.
- The engine control module (ECM) activates the starter motor solenoid by grounding the relay for the starter motor relay. The relay is powered by the ignition switch
- The relay closes the circuit between the starter motor solenoid and the fuse in the integrated relay/fusebox in the engine compartment, activating the starter motor
- The engine control module (ECM) activates the starter motor until the ignition key is released from the start position (position III).
The starter motor will not be activated if
- the immobilizer function does not permit starting. The engine control module (ECM) receives a signal regarding whether the immobilizer is active or inactive from the central electronic module (CEM) via the control area network (CAN)
- the gear selector is not in position "P" or "N" (automatic transmissions). The engine control module (ECM) receives a signal indicating the position of the gear selector from the transmission control module (TCM) (4/28) via both the controller area network (CAN) and from a directly connected cable between the engine control module (ECM) and transmission control module (TCM).
- the clutch pedal is released (manual transmissions, certain markets). The engine control module (ECM) receives a signal indicating the position of the clutch pedal from the central electronic module (CEM) via the controller area network (CAN).
SYSTEM OVERVIEW
see SYSTEM OVERVIEW
Scheme 823
| WARNING | The ballast, which is located in the wheel arch liner, and the wiring for the Bi-Xenon lamps are high voltage. |
The headlights are operated via the light switch module (LSM). This is on the dashboard at the side of the steering wheel. The light switch module (LSM) is directly connected to the central electronic module (CEM). Low and high beam are operated by moving the left control stalk toward the steering wheel.
In the Bi-Xenon lamps, an actuator motor (solenoid) is used to move a cover in front of the lamp in the lamp housing in order to switch between high and low beam.
In cars with Bi-Xenon lamps, the lamps are powered directly via the central electronic module (CEM) without pulse width modulation.
To detect problems with the low beam, the central electronic module (CEM) reads the power consumption of the circuit. If this falls below a certain threshold value a fault will be indicated. The general warning lamp lights in the driver information module (DIM) and a text message is displayed.
Lighting the headlight
It normally takes 3 seconds from activation at the light switch with the ignition on to the lamp lighting.
- As with normal headlights, the lamps remain off while the starter motor is cranking and come on once the engine is running.
- On each occasion that voltage is supplied to the ballast 3 attempts, within 1 second, are made to light the lamp.
Scheme 824
The right and left-hand asymmetric lamps are adjusted mechanically using a simple operation. A lever is accessible when the rear cover on the headlight housing is opened.
A = left-hand asymmetric lamp
B = right-hand asymmetric lamp
Scheme 825
Motors integrated in the headlights regulate the beam range of the headlights.
The motors adjust the headlights vertically depending on load and road conditions to reduce the risk of dazzle.
The motors are regulated via signals from one position sensor at the rear axle and one at the front axle.
The position sensor are directly connected to the "master" gas discharge lamp module (GDL). The sensors detect vehicle angle in different load conditions and transmit information to the "master" gas discharge lamp module (GDL), which then sends control signals to the motors regulating beam range.
If there is a fault in the automatic headlight levelling for the Bi-Xenon lamps, the actuator motors will automatically set the beam range to the shortest level.
There are diagnostics for the headlight levelling.
Scheme 826
Cars with Bi-Xenon lamps have two position sensors so that the headlights can be adjusted automatically. Vertical adjustment accounts for load and road conditions to reduce the risk of dazzle.
One position sensor is located next to the rear axle and is connected to the left rear control arm via a link system. The other position sensor is located next to the right front axle and is connected to the right front control arm via a link system.
Vehicle angle is measured by the sensors being actuated via the respective link system.
The position sensors are directly connected to the "master" gas discharge lamp module. The signals are received by the "master" control module. If speed is above 5 km/h (3 mph), an average value is calculated. The processed information is sent to the "slave" gas discharge lamp module (GDL) via LIN communication.
The position sensors are calibrated using VIDA (Volvo scan tool). The calibration is saved in the "master" control module. The calibration needs to be repeated if the control module or a position sensor has been replaced.
READING OFF THE CONTROL MODULE IDENTIFICATION
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain the following information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N (part of the software).
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The control module can be identified by means of reading off a number of codes.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N
The control module can be identified by means of reading off a number of codes.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N
The control module can be identified by means of reading off a number of codes.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The control module can be identified by means of reading off a number of codes.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N
DESCRIPTION OF PROGRAMMABLE PARAMETERS, CUSTOMER ADAPTATION
The system can be adapted to the wishes of the customer in a variety of ways. Most importantly, the customer is able to select the order in which the doors are unlocked from four different settings
- Total unlocking: All doors and the tailgate or trunk lid are unlocked if a handle is pulled out or the unlock button for the tailgate or trunk lid is pressed as long as there is a valid key at that door
- Selective unlocking, one of the front doors: The vehicle can only be unlocked using the handle on one of the front doors if there is a key at that door. The front door on which the handles was pulled unlocks and opens. The other doors must be opened using the remote control or using the central locking switch inside the vehicle. If the handle for the tailgate is used, only the tailgate will unlock and open
- Selective unlocking: both front doors: The vehicle can only be unlocked using the handle on one of the front doors if there is a key at that door. The front door on which the handles was pulled unlocks and opens. The other front door unlocks. The other doors must be unlocked using the remote control or using the central locking switch inside the vehicle. If the handle for the tailgate is used, only the tailgate will unlock and open
The setting can be changed at the workshop using VIDA (Volvo scan tool). The customer can change the setting themselves if the car has an infotainment control module (ICM). If the customer changes the setting, this setting is transmitted by the infotainment control module (ICM) to the keyless vehicle module (KVM) on the controller area network (CAN). The default setting when the vehicle is supplied is stored in the central electronic module (CEM).
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The system can be adapted to the wishes of the customer in a variety of ways. Most importantly, the customer is able to select the order in which the doors are unlocked from four different settings
- Total unlocking: All doors and the tailgate or trunk lid are unlocked if a handle is pulled out or the unlock button for the tailgate or trunk lid is pressed as long as there is a valid key at that door
- Selective unlocking, one of the front doors: The vehicle can only be unlocked using the handle on one of the front doors if there is a key at that door. The front door on which the handles was pulled unlocks and opens. The other doors must be opened using the remote control or using the central locking switch inside the vehicle. If the handle for the tailgate is used, only the tailgate will unlock and open
- Selective unlocking: both front doors: The vehicle can only be unlocked using the handle on one of the front doors if there is a key at that door. The front door on which the handles was pulled unlocks and opens. The other front door unlocks. The other doors must be unlocked using the remote control or using the central locking switch inside the vehicle. If the handle for the tailgate is used, only the tailgate will unlock and open
The setting can be changed at the workshop using VIDA (Volvo scan tool). The customer can change the setting themselves if the car has an infotainment control module (ICM). If the customer changes the setting, this setting is transmitted by the infotainment control module (ICM) to the keyless vehicle module (KVM) on the controller area network (CAN). The default setting when the vehicle is supplied is stored in the central electronic module (CEM).
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
READING OFF CONTROL MODULE IDENTIFICATION
VIDA identifies control modules by reading off a number of codes from the control module memory. The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- software number, diagnostics.
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.
VIDA identifies control modules by reading off a number of codes from the control module memory.
The codes contain information about the control module
- hardware P/N (control module without software)
- hardware serial number (control module without software)
- software P/N
- diagnostic software P/N.