54A-DATA LIST REFERENCE TABLE

DATA LIST REFERENCE TABLE

The following items of ECU input data can be read using scan tool MB991958.

Item No.

Check item

Check condition

Normal condition

ECU power supply voltage

Ignition switch: "ON"

9.0 to 16.0 V

ECU temperature

Ignition switch: "ON"

-39 to 99 °C (-38 to 210 °F)

Object recognition (CONT. value)

Relative speed (Control value)

Ignition switch: "ON"

Displays a relative speed to a target vehicle.

Relative speed (Left)

Relative speed (Right)

Relative speed (Center)

Relative distance (Control value)

Ignition switch: "ON"

Displays a relative distance to a target vehicle (0 to 40 m).

Lateral position

-10 to 10 m

Reflection amplitude (Left)

Ignition switch: "ON"

Displays a reflection intensity of the sensors (nominal range: -1 to 72)

Reflection amplitude (Right)

Reflection amplitude (Center)

Camera/Laser Radar performance

Ignition switch: "ON"

Displays an operation status of the FCM/LDW/AHB-ECU; Normal, Blocked, System failure.

Relative distance (Left)

Ignition switch: "ON"

Displays a relative distance to a target vehicle.

Relative distance (Right)

Relative distance (Center)

Steering wheel angle (+: left turn, -: right turn)

Vehicle stopped (the steering wheel is in the neutral position)

-6 to 6 deg

Yaw rate (+: left turn, -: right turn)

Vehicle stopped (level)

-3.6 to 3.6 deg/s

Running

-75 to 75 deg/s

Lateral G (+: left turn, -: right turn)

Vehicle stopped (level)

-0.11 to 0.11 m/s²

Running

-1 to 1 m/s²

Longitudinal G (+: deceleration, -: acceleration)

Vehicle stopped (level)

-0.04 to 0.04 m/s²

Running

-1 to 1 m/s²

Vehicle speed

Perform a test run of the vehicle.

The speedometer display and the scan tool MB991958 display almost agree with each other.

AS&G status

Ignition switch: "ON"

Displays an operation status of the Auto Stop & Go (AS&G); Not active, Idle stop, Auto start.

A.S.C. status

When the ASC is activated

A.S.C. ON

When the ASC is deactivated by the ASC OFF switch.

A.S.C. OFF

When the ASC fails

A.S.C. fail

Ignition switch

Ignition switch: "LOCK"(OFF)

Lock

Ignition switch: "ACC"

ACC

Ignition switch: "ON"

Ignition switch: "START"

Start

FCM ON/OFF switch

FCM and LDW ON/OFF switch (FCM switch): Pressed

FCM and LDW ON/OFF switch (FCM switch): Released

OFF

LDW switch

FCM and LDW ON/OFF switch (LDW switch): Pressed

FCM and LDW ON/OFF switch (LDW switch): Released

OFF

FCM warning request

The FCM system warning is not displayed.

No request

The FCM system warning is displayed (warning is activated)

Warning

The FCM system warning is displayed (during braking)

FCM brake

The FCM system warning is displayed (after braking)

FCM BRK finished

The FCM system warning is displayed (The FCM system is switched off)

OFF

The FCM system warning is displayed (The distance is set to "Far").

Distance (Far)

The FCM system warning is displayed (The distance is set to "Near").

Distance (Near)

The FCM system warning is displayed (The distance is set to "Mid")

Distance (Mid)

The FCM system warning is displayed (the FCM system is deactivated temporarily)

Temporary fail

The FCM system warning is displayed (the system fails).

System failure

FCM OFF indicator request

The FCM system: OFF

ON (FCM OFF indicator: Illuminate)

The FCM system: ON

OFF (FCM OFF indicator: Not illuminate)

The FCM radar calibration has not been completed.

Flash (FCM OFF indicator: Flash)

Pitch angle (Current)

Displays the current compensation angle.

note	If diagnosis code No. C1754 or C2292 is not set, the compensation angle value is normal.

Yaw angle (Current)

Roll angle (Current)

LDW lane detection (RH)

The LDW is deactivated. Alternatively, the vehicle is being driven on the road where lane division lines are not clear with the LDW activated.

OFF

The vehicle is being driven on the road where lane division lines are clear with the LDW activated.

LDW lane detection (LH)

The LDW is deactivated. Alternatively, the vehicle is being driven on the road where lane division lines are not clear with the LDW activated.

OFF

The vehicle is being driven on the road where lane division lines are clear with the LDW activated.

LDW warning status (RH)

The vehicle is being driven on the middle (not near a lane line) of the road where lane division lines are clear

OFF

The vehicle is being driven near or across a lane division line of the road.

LDW warning status (LH)

The vehicle is being driven on the middle (not near a lane line) of the road where lane division lines are clear

OFF

The vehicle is being driven near or across a lane division line of the road.

What the FCM/LDW/AHB-ECU monitors

By monitoring these items, the system recognizes how the FCM is controlled.
Monitored data can be stored three times; Event 1 (the last), Event 2 (the last but one) and Event 3 (the last but two). To store the forth data, oldest Even 3 will be erased.

Item No.	Scan tool MB991958 display
100	FCM Event1:Odometer
101	FCM Event1:Vehicle speed (ST)
102	FCM Event1:Vehicle speed (End)
103	FCM Event1:Yaw rate (ST)
104	FCM Event1:Yaw rate (End)
105	FCM Event1:Longitudinal G (ST)
106	FCM Event1:Longitudinal G (End)
107	FCM Event1:Lateral G (ST)
108	FCM Event1:Lateral G (End)
109	FCM Event1:ABS activation
110	FCM Event1:A.S.C activation
111	FCM Event1:Brake switch(ST)
112	FCM Event1:Brake switch(End)
113	FCM Event1:FCM brake req. time
114	FCM Event1:Target decel. (MAX)
115	FCM Event1:Actual decel. (MAX)
116	FCM Event1:Relative distance(ST)
117	FCM Event1:Relative dist. (End)
118	FCM Event1:Relative speed (ST)
119	FCM Event1:Relative speed (End)
120	FCM Event1:Steering angle (ST)
121	FCM Event1:Steering angle (End)
122	FCM Event1:Accelerator POS. (ST)
123	FCM Event1:Accelerator POS.(End)
200	FCM Event2:Odometer
201	FCM Event2:Vehicle speed (ST)
202	FCM Event2:Vehicle speed (End)
203	FCM Event2:Yaw rate (ST)
204	FCM Event2:Yaw rate (End)
205	FCM Event2:Longitudinal G (ST)
206	FCM Event2:Longitudinal G (End)
207	FCM Event2:Lateral G (ST)
208	FCM Event2:Lateral G (End)
209	FCM Event2:ABS activation
210	FCM Event2:A.S.C activation
211	FCM Event2:Brake switch(ST)
212	FCM Event2:Brake switch(End)
213	FCM Event2:FCM brake req. time
214	FCM Event2:Target decel. (MAX)
215	FCM Event2:Actual decel. (MAX)
216	FCM Event2:Relative distance(ST)
217	FCM Event2:Relative dist. (End)
218	FCM Event2:Relative speed (ST)
219	FCM Event2:Relative speed (End)
220	FCM Event2:Steering angle (ST)
221	FCM Event2:Steering angle (End)
222	FCM Event2:Accelerator POS. (ST)
223	FCM Event2:Accelerator POS.(End)
300	FCM Event3:Odometer
301	FCM Event3:Vehicle speed (ST)
302	FCM Event3:Vehicle speed (End)
303	FCM Event3:Yaw rate (ST)
304	FCM Event3:Yaw rate (End)
305	FCM Event3:Longitudinal G (ST)
306	FCM Event3:Longitudinal G (End)
307	FCM Event3:Lateral G (ST)
308	FCM Event3:Lateral G (End)
309	FCM Event3:ABS activation
310	FCM Event3:A.S.C activation
311	FCM Event3:Brake switch(ST)
312	FCM Event3:Brake switch(End)
313	FCM Event3:FCM brake req. time
314	FCM Event3:Target decel. (MAX)
315	FCM Event3:Actual decel. (MAX)
316	FCM Event3:Relative distance(ST)
317	FCM Event3:Relative dist. (End)
318	FCM Event3:Relative speed (ST)
319	FCM Event3:Relative speed (End)
320	FCM Event3:Steering angle (ST)
321	FCM Event3:Steering angle (End)
322	FCM Event3:Accelerator POS. (ST)
323	FCM Event3:Accelerator POS.(End)