Audi A4, A5, Q5 (B8) ABS MVB

(1)

Anti-lock brake system (ABS) - Measuring Value Blocks

P/N 8K0 907 379, 8T0 907 379, 8R0 907 379

ID

Measured value name Description Unit

1.1

Front left wheel speed

Display range 0 to 255 km/h. At vehicle standstill 0 km/h is displayed.

Note: In the measured value block a measured value is only displayed when there is no static fault memory entry relating to the speed sensor.

km/h

1.2

Front right wheel speed

1.3

Wheel speed rear left

1.4

Wheel speed rear right

2.1

Brake actuation by driver detected by control unit -J104

Possible readout on tester: pressed, 0 and invalid.

2.2

Brake light switch (CAN signal from _{engine control unit)} If one of these switches is pressed, the tester indicates pressed. If unpressed, the readout is 0.

2.3

Handbrake by EPB

2.4

ESP passive button

3.1

Engine speed

These data are required to calculate for the ABS/ESP control unit -J104.

/min

3.2

Engine torque Nm

3.3

Engine torque loss Nm

3.4

Throttle valve angle %

4.1

Standing time Display range 0.0 to 255:59 h; standing time of the vehicle after ignition-off until ignition on. If no message from dash panel insert, text: ERROR;

error status Stand time; Text : Invalid.

The standing time signal is transmitted by the dash panel insert to control unit -J104. It is required to calculate the brake cooling time.

h

4.2

EDL temperature-flag Possible readout Off or On; if Off OK I.e. the EDL system is ready; if On not OK I.e. the _{EDL system is shut off due to overheating.}

5.1

Steering angle Possible readout in degrees, min. -720° max. +720°, when front wheels set straight-_{ahead max. tolerance +/-5°.} °

5.2

Yaw rate Readout in degrees per second:

Specification when vehicle stopped= +/- 4,0 °/s Preconditions

The vehicle must be standing level in direction of travel.

(2)

The vehicle must not be shaken or moved. Ignition on

5.3

G201 - Brake pressure -G201 Brake pressure in bar min. -41 bar max. 292 bar, due to electrical faults, e.g. short to earth, a value of -41 bar is displayed; in case of short to positive a value of approx. 290 is displayed

bar

5.4

Transverse acceleration Readout in metres per square second:

Specification when vehicle stopped= +/- 1.5 m/s² Preconditions

The vehicle must be standing level in direction of travel. The vehicle must not be shaken or moved.

Ignition on

m/s2

6.1

Voltage supply terminal 30 Term.30 supply voltage for ABS/ESP control unit -J104. V

6.2

Valve relay status Possible readout Off/On;''On'' OK, ''Off'' n.OK

6.3

Status of return flow pump Possible readout: off/on.

7.1

Fitting pos. speed sensor G47 front _left _{Display range Invalid/OK/n.OK; when vehicle stopped, readout is Invalid.} If readout is n.OK, first check brake temperature (test applies only at room temperature)

-Check sensor fit (fully inserted, firmly screwed down) -Check wheel bearings

-Check axle tolerances

7.2

Fitting pos. speed sensor G44 front _right

7.3

Fitting position speed sensor G46 _{rear left}

7.4

Fitting pos. speed sensor G45 rear _right

8.1

Direction speed sensor G47 front _left

Display range Invalid/Forward/Reverse; when vehicle stopped, readout is Invalid.

8.2

Direction speed sensor G44 front _right

8.3

Direction speed sensor G46 rear _left

8.4

Direction speed sensor G45 rear _left

9.1

Brake actuation by driver _{detected by control unit -J104} Possible readout on tester: _{pressed, 0 and invalid.}

9.2

ESP QBit driver brakes Possible readout on tester: _{0 and invalid.}

(3)

9.4

G201 - Brake pressure -G201 Brake pressure in bar min. -41 bar max. 292 bar, due to electrical faults, e.g. short to earth, a value of -41 bar is displayed; in case of short to positive a value of approx. 290 is displayed

bar

10.1

Longitudinal acceleration sensor -G251 calibration OK Display range: - OK (Calibration of longitudinal acceleration sender successful) - NOK (Calibration of longitudinal acceleration sender not successful)

10.2

Longitudinal acceleration sensor -_{G251 calibrated value} As described m/s2

15.1

Number of cylinders As described

15.2

Combustion method Possible readout on tester: Petrol engine

Diesel engine invalid

15.3

Getriebevariante Gearbox variant retuned in Hex e.g. 0x0002

15.4

Coding in ECU Possible readout on tester: _{OK and NOK}

16.3

Clamp force reached The attained clamp force of the EPB is displayed on the tester.

16.4

Switch info EPB As described

17.1

HHC signals 1 Bit 0 = Incline output torque > Wheel creep torque (corresponding to activation threshold)*

Bit 1 = Engine torque > Incline output torque (corresponding to release command)* Bit 2 = ESP_Qbit_longitudinal acceleration

Bit 3 = EPB_Q_Bit_pedal_value_clutch (EPB_01) Bit 4 = EPB_Q_Bit_switch pos (EPB_01)

Bit 5,6 = EPB_fault status (EPB_01) Bit 7 = Vacant

* If condition met bit = 1

17.2

AUTO HOLD button -E540 only on _{vehicles with Audi hold assis} If one of these buttons is pressed, the tester indicates pressed. _{If unpressed, the readout is 0.}

17.3

EPB pedal travel clutch The pedal travel of the clutch in % is displayed on the tester. _{The measuring range is 0 - 102 %.} %

17.4

HCC signals 2 Bit 0,1,2,3 = GE_selector lever (Gearbox_03) Bit 4 = AB_Belt_warn_VF (Airbag_01)

Bit 5 = BCM1_Reverse_light_switch (Gateway_05) Bit 6 = BCM1_Forward_gear_engaged (Gateway_05) Bit 7 = FT_Door_open (Gateway_05)

(4)

18.2

VIN 16/17 The 16th and 17th digits of the VIN are displayed.

18.3

Last coding VIN 14/15 The 14th and 15th digits of the last VIN are displayed.

18.4

Last coding VIN 16/17 The 16th and 17th digits of the last VIN are displayed.

19.1

Actual code 0 = not coded

1 = coded Bit 0 = TOL*

Bit 1 = Quattro Sport* Bit 2 = ADS*

Bit 3 = LWR Bit 4 = Start/Stop

Bit 5 = Running gear RS5 Bit 6 = TOL country Bit 7 = DSR

* Actual coding, as control unit coded by Audi system

19.2

Specified code 0 = Coding not infringed 1 = Code monitoring applied Bit 0 = TOL*

Bit 1 = Quattro Sport* Bit 2 = ADS*

Bit 3 = LWR Bit 4 = Start/Stop

Bit 5 = Running gear RS5 Bit 6 = 0 (vacant)

Bit 7 = DSR

* Specified - code monitoring applied

20.1

Bosch version This is Bosch internal software version designation

21.1

Sensor cluster hardware version Contains the part number, hardware and software number and the date of _manufacture

22.1

Steering wheel angle with _{preceding sign} _{The steering wheel angle in ° is displayed on the tester.}

The measuring range is -819.1° to +819.1°.

°

22.2

Steering wheel angle with _{preceding sign subdata}

(5)

22.3

Steering wheel speed with _{preceding sign} The steering wheel speed in °/s is displayed on the tester. _{The measuring range is -2555°/s to +2555°/s.} °/s

22.4

Data steering angle sender 0: inactive 1: active

Bit 0 = LWI_Sensor status Bit 1 = LWI_QBit_Sub_data

Bit 2 = LWI_QBit_steering wheel angle Bit 3 = 0 (vacant) Bit 4 = 0 (vacant) Bit 5 = 0 (vacant) Bit 6 = 0 (vacant) Bit 7 = 0 (vacant)

23.1

Status information 1 0: inactive 1: active Bit 7 = AVH Bit 6 = HHC Bit 5 = BSW Bit 4 = XDS Bit 3 = HFC Bit 2 = TOL Bit 1 = 0 (vacant) Bit 0 = ESP

23.2

Status information 2 0: inactive 1: active Bit 7 = TPM+

Bit 6 = ESP-ADS coding Bit 5 = ESP function underst. Bit 4 = ESP function overst. Bit 3 = ESP function ?-Split Bit 2 = VIN monitoring Bit 1 = Roller mode ESP Bit 0 = 0 (vacant)

23.3

Status information 3 0: inactive 1: active

(6)

Bit 7: 0 (vacant) Bit 6: 0 (vacant) Bit 5: 0 (vacant) Bit 4: 0 (vacant)

Bit 3: Acoustics 0 = off 1 = on Bit 2: Text display 0 = off 1 = on Bit 1: DSR 0 = off 1 = on

Bit 0: SLC 0 = off 1 = on

24.1

Fault entry bit sensor cluster 1

25.1

Serial no. sensor cluster 1 Serial no. sensor cluster 1

109.1

Stop preventer 1 1 = HDC

2 = Offroad

4 = ESP pump running

8 = Emergency braking detected 10 = Roll-back detected

20 = Slip detected

109.2

Day

Timestamp of the stop preventer 1

109.3

Month

109.4

Time

110.1

2 = Offroad

20 = Slip detected

110.2

Day

110.3

Month

110.4

Time

111.1

2 = Offroad

20 = Slip detected

111.2

Day

111.3

Month

(7)

111.4

Time

112.1

2 = Offroad

20 = Slip detected

112.2

Day

112.3

Month

112.4

Time

113.1

2 = Offroad

20 = Slip detected

113.2

Day

113.3

Month

113.4

Time

114.1

Start request 1 1 = HDC 2 = Offroad 10 = Roll-back detected 20 = Slip detected

114.2

Day

Timestamp of the start request 1

114.3

Month

114.4

Time

115.1

115.2

Day

115.3

Month

115.4

Time

(8)

10 = Roll-back detected 20 = Slip detected

116.2

Day

116.3

Month

116.4

Time

117.1

117.2

Day

117.3

Month

117.4

Time

118.1

118.2

Day

118.3

Month

118.4

Time

119.1

Stop status information HighByte:

Bit 6, 7: MO_StartStop Status Bit 4, 5: ESP_StartStop_Info

Bit 3: Emergency braking detected Bit 2: ESP pump running

Bit 1: Offroad Bit 0: HDC LowByte:

Bit 1: Slip detected Bit 0: Roll-back detected

119.3

Start status information HighByte:

Bit 3: Slip detected Bit 2: Roll-back detected Bit 1: Offroad

(9)

121.1

Frequency counter stop prohibition _HDC

121.2

Frequency counter stop prohibition _{pump running}

121.3

Frequency counter stop prohibition _{emergency braking}

121.4

Frequency counter stop prohibition _roll-back

123.1

Frequency counter start request _HDC

123.2

Frequency counter start request _roll-back

123.3

Frequency counter start request _slip

125.1

CAN message from steering angle _sender

Possible readouts:

If a 1 is displayed, a CAN message is sent from the relevant control unit. If the tester shows a 0, the CAN message is interrupted.

In such cases read the fault memory of the relevant control unit.

125.2

CAN message from engine control _unit

125.3

CAN message from gearbox _{control unit (automatic only)}

125.4

CAN message from dash panel _insert

126.1

CAN message from ACC

126.2

CAN message from Gateway

126.3

CAN message from EPB

126.4

CAN message from ESP sensor unit _-G419

127.1

CAN message from airbag

127.2

CAN message from active steering _{control unit -J792}

127.3

ESP sensor unit 2 -G536 (only _{veh.with active steering)}

150.1

SCU overlay angle ADS The overlay angle in ° is displayed on the tester. _{The measuring range is -409.5° to +409.5°.}

(10)

150.3

SCU maximum gradient The maximum gradient is displayed on the tester. _{The measuring range is 0 to 511.}

151.1

SCU status The status is displayed on the tester. _{The measuring range is 0 to 7.}

151.2

SCU KD error Relevant system errors are displayed

152.1

ESP part specified angle The partial specified angle in ° is displayed on the tester. _{The measuring range is -204.7° to +204.7°.}

152.2

ESP angle cut-in The angle cut-in is displayed on the tester. _{The measuring range is 0 to 3.}

152.3

ADS status information 1 Bit 0,1 = ESP_coding_ADS

152.4

ADS status information 2 Bit 5,6 = ESP_status_ADS _{Bit 8 = ESP_steering_cut-in_ADS}

153.1

Data sensor cluster 2

154.1

Fault entry sensor cluster 2

155.1

Serial number sensor cluster 2

156.1

Yaw rate -G536 (only vehicles with

active steering) Yaw rate, ESP sensor unit 2 -G536 (only on vehicles with active steering): Readout in degrees per second:

Specification when vehicle stopped= +/- 4,0 °/s Preconditions

Ignition on

156.2

Yaw rate sensor 2 - yaw rate sensor ₁

156.3

Lateral acceleration (only vehicles

with active steering) Lateral acceleration, ESP sensor unit 2 -G536 (only on vehicles with active steering): Readout in metres per square second: Specification when vehicle stopped= +/- 1.5 m/s²

Preconditions

Ignition on

156.4

Lateral acceleration sensor 2 - _{latral acceleration sensor 1}