Block Diagram Of Data Bus System. Scheme 2
All control units are interlinked through the CAN data bus.
A control unit receives a measured value from a sensor, prepares a data telegram from this and places it on the CAN data bus.
All other control units can then read and process this data packet.
CAN data bus, contents, function description - GF54.00-P-0999ZZ
MODELS 124, 129, 140, 163, 168, 170, 202, 203, 208, 209, 210, 211, 215, 220, 230, 240, 463
| Data bus system function | GF54.00-P-0004A | ||
|---|---|---|---|
| Data bus system, block diagram | GF54.00-P-0004-03A | ||
| Data bus system, advantages | GF54.00-P-0004-04A | ||
| CAN data bus, function | GF54.00-P-0005A | ||
| CAN data bus data telegram | GF54.00-P-0005-01A | ||
| CAN data bus specification | GF54.00-P-0005-02A | ||
| CAN data bus fault recognition | GF54.00-P-0005-03A | ||
| CAN data bus applications | GF54.00-P-0005-04A |
Table of contents for function description of instrument cluster (IC) - GF54.30-P-0997PM
MODEL 203.0 /2 /7 as of 24.4.04
| Instrument cluster (IC), function | GF54.30-P-0002PM | ||
|---|---|---|---|
| Instrument cluster (IC), operating information | Up to 31.5.05 | GF54.30-P-0002-05PM | |
| As of 1.6.05 | GF54.30-P-0002-05PO | ||
| Instrument cluster (IC), networking of components | GF54.30-P-0002-06PM | ||
| Instrument cluster activation, function | GF54.30-P-2006PM | ||
| Instrument cluster illumination, function | GF54.30-P-2007PM | ||
| Adjusting switch and controls illumination, function | GF54.30-P-2010PM | ||
| Function to display malfunction/warning indication via indication lights | Up to 31.5.05 | GF54.30-P-2011PM | |
| As of 1.6.05 | GF54.30-P-2011PO | ||
| Display monitoring/warning messages via multifunction display, function | Up to 31.5.05 | GF54.30-P-2012PM | |
| As of 1.6.05 | GF54.30-P-2012PO | ||
| Output acoustic warning messages, function | Audible turn signal indicator | GF54.30-P-2013PM | |
| Warning buzzer | GF54.30-P-2013PPM | ||
| Indicator lamp test and engine running detection, function | Up to 31.5.05 | GF54.30-P-2014PM | |
| As of 1.6.05 | GF54.30-P-2014PO | ||
| Displaying fuel quantity, function | GF54.30-P-3018PM | ||
| Display outside temperature, function | GF54.30-P-3019PM | ||
| Display coolant temperature, function | GF54.30-P-3020PM | ||
| Display engine speed, function | GF54.30-P-3021PM | ||
| Display distance, function | GF54.30-P-3022PM | ||
| Display transmission information, function | Transmission 722.6 except Code (428) Steering wheel shift buttons | GF54.30-P-3023PM | |
| Except model 203.076/276 | |||
| Transmission 722.9 | GF54.30-P-3023PO | ||
| Except code (428) Steering wheel shift buttons | |||
| Transmission 722.6, with Code (428) Steering wheel shift buttons | GF54.30-P-3023PPM | ||
| Model 203.076/276 | |||
| Transmission 722.9 | GF54.30-P-3023PPO | ||
| With code (428) Steering wheel shift buttons | |||
| Display time, function | GF54.30-P-3024PM | ||
| Display speed, function | GF54.30-P-3025PM | ||
| Battery charge/alternator monitoring, function | GF54.30-P-3027PM | ||
| Coolant/washer fluid level voltage coding, function | Up to 31.5.05 | GF54.30-P-4001PM | |
| As of 1.6.05 | GF54.30-P-4001PO | ||
| Survey of system components, instrument cluster (IC), location / task / design / function | GF54.30-P-9997PM |
Table of contents, function description of instrument cluster (IC) - GF54.30-P-0997PZ
MODEL 203.0 /2 /7 up to 23.4.04
| Instrument cluster (KI) function | GF54.30-P-0002PP | ||
|---|---|---|---|
| Instrument cluster (IC), operating information | Models 203.0/2 | GF54.30-P-0002-05PP | |
| Model 203.7 | GF54.30-P-0002-05PC | ||
| Instrument cluster (KI) component network | GF54.30-P-0002-06PP | ||
| Activating instrument cluster, function | GF54.30-P-2006PP | ||
| Displaying check/warning messages by means of multifunction display, function | GF54.30-P-2012PP | ||
| Displaying speed, function | GF54.30-P-3025PP | ||
| Fuel quantity display function | GF54.30-P-3018PP | ||
| Displaying outside temperature, function | GF54.30-P-3019PP | ||
| Displaying coolant temperature, function | Up to 31.5.03 | GF54.30-P-3020PP | |
| As of 1.6.03 | GF54.30-P-3020PPP | ||
| Engine rpm display function | GF54.30-P-3021PP | ||
| Displaying distance, function | GF54.30-P-3022PP | ||
| Displaying transmission information, function | Up to 31.5.03 | GF54.30-P-3023PP | |
| As of 1.6.03 | GF54.30-P-3023PPP | ||
| Displaying time, function | GF54.30-P-3024PP | ||
| Displaying check/warning messages by means of indicator lamps, function | GF54.30-P-2011PP | ||
| Outputting audible warning messages, function | GF54.30-P-2013PP | ||
| Function to test malfunction indication lights and engine running detection | GF54.30-P-2014PP | ||
| Battery charge/alternator monitoring function | GF54.30-P-3027PP | ||
| Instrument cluster illumination function | GF54.30-P-2007PP | ||
| Setting push-button unit illumination, function | GF54.30-P-2010PP | ||
| Coolant/washer fluid level voltage coding, function | GF54.30-P-4001PP | ||
| Survey of system components of instrument cluster (IC), location/task/design/function | GF54.30-P-9997PZ |
Component description for an engine diagnosis indicator lamp - GF54.30-P-5010V
MODEL 203 with ENGINE 272.920 except CODE (494) USA version
MODEL 211 with ENGINE 272.922 except CODE (494) USA version
MODEL 203, 209 with ENGINE 272.940 except CODE (494) USA version
MODEL 203 with ENGINE 272.941 except CODE (494) USA version
MODEL 171 with ENGINE 272.942 except CODE (494) USA version
MODEL 211 with ENGINE 272.943 except CODE (494) USA version
MODEL 211 with ENGINE 272.944 except CODE (494) USA version
MODEL 251 with ENGINE 272.945 except CODE (494) USA version
MODEL 221 with ENGINE 272.946 except CODE (494) USA version
MODEL 203, 209 with ENGINE 272.960 except CODE (494) USA version
MODEL 171 with ENGINE 272.963 except CODE (494) USA version
MODEL 211, 219 with ENGINE 272.964 except CODE (494) USA version
MODEL 221 with ENGINE 272.965 except CODE (494) USA version
MODEL 230 with ENGINE 272.966 except CODE (494) USA version
MODEL 164, 251 with ENGINE 272.967 except CODE (494) USA version
MODEL 203 with ENGINE 272.970 except CODE (494) USA version
MODEL 211 with ENGINE 272.972 except CODE (494) USA version
MODEL 221 with ENGINE 272.975 except CODE (494) USA version
MODEL 221 with ENGINE 273.922 except CODE (494) USA version
MODEL 164 with ENGINE 273.923 except CODE (494) USA version
MODEL 221 with ENGINE 273.924 except CODE (494) USA version
MODEL 164 with ENGINE 273.943 except CODE (494) USA version
MODEL 211, 219 with ENGINE 273.960 except CODE (494) USA version
MODEL 216, 221 with ENGINE 273.961 except CODE (494) USA version
MODEL 211 with ENGINE 273.962 except CODE (494) USA version
MODEL 164, 251 with ENGINE 273.963 except CODE (494) USA version
MODEL 230 with ENGINE 273.965 except CODE (494) USA version
MODEL 209 with ENGINE 273.967 except CODE (494) USA version
MODEL 221 with ENGINE 273.968 except CODE (494) USA version
Shows model 171
Identifying Engine Diagnosis Indicator Lamp - Shows Model 171. Scheme 3
Location
The engine diagnosis indicator lamp (engine symbol) is located in the instrument cluster.
Task
To indicate faults in the fuel injection system.
Function
The indicator lamp is actuated by the instrument cluster via a CAN message from the engine control unit. To check the function it lights up with ignition ON and as of an engine speed of approx. 500 rpm for approx. 1 s. If there is no fault, the indicator lamp goes out
CHECK ENGINE indicator lamp, component description - GF54.30-P-5011KE
MODEL 203.040 /740 with ENGINE 271.948 with CODE (494) USA version
Location up to 03/2004
The indicator lamp (labelled CHECK ENGINE in yellow) is located in the center of the instrument cluster (A1).
Identifying Check Engine Indicator Lamp - Location Up To 03/2004. Scheme 4
Location as of 04/2004
The indicator lamp (labelled CHECK ENGINE in yellow) is located on the right in the instrument cluster (A1).
Scheme 5
Task
The indicator lamp signals faults relevant to exhaust emissions to the driver.
Function
The indicator lamp is actuated by the ME control unit (N3/10) at the ground end when the engine is started.
If there is no fault, the ME control unit interrupts the actuation and the indicator lamp goes out.
To check the bulb function it lights up for approx. 1 second when the ignition is switched "ON".
"CHECK ENGINE" MIL component description - GF54.30-P-5011SM
MODEL 171 with ENGINE 113.989 with CODE (494) USA version
MODEL 203 with ENGINE 113.988 with CODE (494) USA version
MODEL 209 with ENGINE 113.987 with CODE (494) USA version
MODEL 215 with ENGINE 113.986 with CODE (494) USA version
MODEL 220 with ENGINE 113.986 with CODE (494) USA version
Type 171
Scheme 6
Model 203
Identifying Check Engine MIL - Model 203. Scheme 7
Model 209
Scheme 8
Model 215, 220
Identifying Check Engine MIL - Model 215, 220. Scheme 9
Task
The "CHECK ENGINE" MIL notifies the driver of any exhaust-gas relevant faults.
Function
The "CHECK ENGINE" MIL is actuated at the ground end by the MESFI [ME] control unit (N3/10).
To check the bulb function it lights up for approx. 1 second when the ignition is switched "ON".
If there is no fault, the motor electronics control unit interrupts the actuation and the indicator lamp goes out.
Component description for the "CHECK ENGINE" indicator lamp - GF54.30-P-5011V
MODEL 203 with ENGINE 272.920 except CODE (494) USA version
MODEL 211 with ENGINE 272.922 except CODE (494) USA version
MODEL 203, 209 with ENGINE 272.940 except CODE (494) USA version
MODEL 203 with ENGINE 272.941 except CODE (494) USA version
MODEL 171 with ENGINE 272.942 except CODE (494) USA version
MODEL 211 with ENGINE 272.943 except CODE (494) USA version
MODEL 211 with ENGINE 272.944 except CODE (494) USA version
MODEL 251 with ENGINE 272.945 except CODE (494) USA version
MODEL 221 with ENGINE 272.946 except CODE (494) USA version
MODEL 203, 209 with ENGINE 272.960 except CODE (494) USA version
MODEL 171 with ENGINE 272.963 except CODE (494) USA version
MODEL 211, 219 with ENGINE 272.964 except CODE (494) USA version
MODEL 221 with ENGINE 272.965 except CODE (494) USA version
MODEL 230 with ENGINE 272.966 except CODE (494) USA version
MODEL 164, 251 with ENGINE 272.967 except CODE (494) USA version
MODEL 203 with ENGINE 272.970 except CODE (494) USA version
MODEL 211 with ENGINE 272.972 except CODE (494) USA version
MODEL 221 with ENGINE 272.975 except CODE (494) USA version
MODEL 221 with ENGINE 273.922 except CODE (494) USA version
MODEL 164 with ENGINE 273.923 except CODE (494) USA version
MODEL 221 with ENGINE 273.924 except CODE (494) USA version
MODEL 164 with ENGINE 273.943 except CODE (494) USA version
MODEL 211, 219 with ENGINE 273.960 except CODE (494) USA version
MODEL 216, 221 with ENGINE 273.961 except CODE (494) USA version
MODEL 211 with ENGINE 273.962 except CODE (494) USA version
MODEL 164, 251 with ENGINE 273.963 except CODE (494) USA version
MODEL 230 with ENGINE 273.965 except CODE (494) USA version
MODEL 209 with ENGINE 273.967 except CODE (494) USA version
MODEL 221 with ENGINE 273.968 except CODE (494) USA version
Shows model 219
Location
The "CHECK ENGINE" indicator lamp is located in the instrument cluster.
Task
To indicate faults in the fuel injection system
Scheme 10
Function
The indicator lamp is actuated by the instrument cluster via a CAN message from the engine control unit. To check the function it lights up with ignition on ON and as of an engine speed of approx. 500 rpm for approx. 1 s. If there is no fault, the indicator lamp goes out
Air horns, system operation - GF54.35-P-0001PP
MODELS 203
Requirements for operation
- Circuit 15R ON When the contact for the air horn activation (S110s5) or (S111s5) is closed by pressure on the multifunction steering wheel's (MFL) center pad, the air horns (H2) are activated in the following operational sequence
- The EZS control unit (N73) registers the signals from the airhorn contact (S110s5) or airhorn contact (S111s5) in voltage-coded form.
- The EZS control unit (N73) responds by transmitting a corresponding message to the front SAM control unit with fuse and relay module (N10/1) via the Class B Controller Area Network (interior).
- The front SAM control unit with fuse and relay module (N10/1) then activates the airhorn relay (N10/1kl).
- The airhorn relay (N10/1kl) switches to relay power for the airhorns (H2) through its own Terminal 30.
- The horn sounds.
Because one of the airhorn (H2) wires is always grounded, supplying power through Terminal 30 on the airhorn relay (N10/1kl) activates the horns. The coil in the airhorn relay (N10/1kl) is permanently connected to Terminal 15R. When the airhorns (H2) are activated, the front SAM control unit with fuse and relay module (N10/1) grounds the other end
The 2 airhorn contacts (S110s5) and the 2 airhorn contacts (S111s5) are on a PCB located beneath the MFL multifunction steering wheel's center pad. This system incorporates 4 contacts to ensure that the airhorns (H2) can be activated through pressure applied to any point on the center pad. The two airhorn contacts on the right side (S110s5) and the two contacts on the left side (S111s5) are arranged in parallel. Together with the buttons in the switch cluster on the left side of the multifunction steering wheel (S110) and the right-side cluster on the multifunction steering wheel (S111) the signals are registered by the EZS control unit (N73) as voltage-coded data. When another element within the switch cluster on the left (S110) or right (S111) of the multifunction steering wheel is activated simultaneously with the airhorn contact (S110s5) or (S111s5), the airhorn has priority
Diagnosis
Diagnosis is carried out with STAR DIAGNOSIS.
| Airhorn system component network | GF54.35-P-0001-02PP | ||
|---|---|---|---|
| Scanning of switch positions, function | Model 203.7 as of 1.7.02 up to 23.4.04 Model Series 203.0 /2 (except 203.076/276) starting 1.7.02 Except Code (428a) Steering wheel-mounted switches | GF82.90-P-3001PA | |
| Model 203.7 starting in 24.4.04 | GF82.90-P-3001PM | ||
| Model 203 up to 30.6.02 | GF82.90-P-3001PP | ||
| Model 203.0/2 With Code (428a), steering wheel-mounted switches Model 203.076/276 | GF82.90-P-3001PY |
Contents, function description, fanfare horns - GF54.35-P-0999PP
MODEL 203
| Fanfare horns, function | GF54.35-P-0001PP | ||
|---|---|---|---|
| Interlinkage of components for fanfare horns | GF54.35-P-0001-02PP | ||
| Survey of system components, fanfare horns, location / task / design / function | GF54.35-P-9999PP |
Trip computer (TRIP), contents, function description - GF54.50-P-0999OZ
MODELS 203 up to 30.6.02 with CODE (494a) USA version
| Function of trip computer (TRIP) | GF54.50-P-0001R | ||
|---|---|---|---|
| Trip computer (TRIP), networking of components | GF54.50-P-0001-02PP | ||
| Instrument cluster (IC), operating information | Model 203.0/2 | GF54.30-P-0002-05PP | |
| Model 203.7 | GF54.30-P-0002-05PC | ||
| Kilometer / miles switchover, function | GF54.50-P-2002R | ||
| Travel time, function | GF54.50-P-2004R | ||
| Range, function | GF54.50-P-2006R | ||
| Fuel consumption, function | GF54.50-P-2007R | ||
| Distance, function | GF54.50-P-2008R | ||
| Average speed, function | GF54.50-P-2009R | ||
| Reset, function | GF54.50-P-2010R |
Trip computer (TRIP), contents function description - GF54.50-P-0999P
MODEL 203.0 /2 /7 as of 1.7.02 up to 23.4.04
| Trip computer (TRIP), function | GF54.50-P-0001P | ||
|---|---|---|---|
| Trip computer (TRIP), networking of components | GF54.50-P-0001-02P | ||
| Kilometers/miles switchover, function | GF54.50-P-2002P | ||
| Travel time, function | GF54.50-P-2004P | ||
| Range, function | GF54.50-P-2006P | ||
| Fuel consumption, function | GF54.50-P-2007P | ||
| Distance, function | GF54.50-P-2008P | ||
| Average speed, function | GF54.50-P-2009P | ||
| Reset, function | GF54.50-P-2010P | ||
| Overview of trip computer (TRIP) system components, location/task/design/function | GF54.50-P-9999P |
Trip computer (TRIP) contents function description - GF54.50-P-0999PM
MODEL 203.0 /2 /7 as of 24.4.04
| Function of trip computer (TRIP) | GF54.50-P-0001PM | ||
|---|---|---|---|
| Trip computer (TRIP), networking of components | GF54.50-P-0001-02PM | ||
| Kilometer / miles switchover, function | GF54.50-P-2002PM | ||
| Travel time, function | As of start | GF54.50-P-2004PM | |
| As of reset | GF54.50-P-2004PN | ||
| Range, function | GF54.50-P-2006PM | ||
| Fuel consumption, function | As of start | GF54.50-P-2007PM | |
| As of restart | GF54.50-P-2007PN | ||
| Distance, function | As of start | GF54.50-P-2008PM | |
| As of reset | GF54.50-P-2008PN | ||
| Average speed, function | As of reset | GF54.50-P-2009PM | |
| As of reset | GF54.50-P-2009PN | ||
| Reset, function | As of start | GF54.50-P-2010PM | |
| As of reset | GF54.50-P-2010PN | ||
| Overview of trip computer (TRIP) system components, location/task/design/function | GF54.50-P-9999PM |
Trip computer (TRIP), overview of system components, location/task/design/function - GF54.50-P-9999P
MODEL 203.0 /2 /7 as of 1.7.02 up to 23.4.04
| Instrument cluster (IC), location/task | GF54.30-P-3039PP | ||
|---|---|---|---|
| Trip computer (TRIP), contents function description | GF54.50-P-0999P |
Contents, function description, Parktronic system (PTS) - GF54.65-P-0999PP
MODELS 203.0 /2 /7 with CODE (220a) Parktronic System (PTS)
| Parktronic system (PTS), function | GF54.65-P-0001PP | ||
|---|---|---|---|
| Parktronic system (PTS) block diagram | GF54.65-P-0001-01D | ||
| Parktronic system (PTS), location of components | GF54.65-P-0001-02H | ||
| Self-test, function | GF54.65-P-2000PP | ||
| Forward travel, function | GF54.65-P-4000PP | ||
| Reversing, function | GF54.65-P-4001PP | ||
| Survey of system components, Parktronic system (PTS), location / task / design / function | GF54.65-P-9999PP |