ECU - Electronic Control Unit

In terminology of VW-group it's any electronic device, which has been carried out some logic function. Sometimes it looks like nonsens - even simple relay can be called ECU.

The coding of Electronic Control Unit used for explain the ECU where it is and what "neighbours" does it have. Very often on modern cars the coding is crossed with adaptation.

Adaptation of the Electronic Control Unit serves to explain to the ECU with whom and how to talk (If we have started to speak allegories) and serves as storehouse of various adjustable parameters. ( part of memory in the Control Unit which can be changed via internal software )

Measured Values Blocks ( MWB ) – various parameters being inbound or calculated. Considering to value of MWB Electronic Control Unit, trying to "control"... Using of MWB allows you ( if you know the basic parameters ) to find out "close to boundary" or temporarily arising ( intermittent, sporadic ) malfunctions and many other useful things at competent use.


J217_8K_34_0B5_1_1108_21_grund.htm
J217_8K_38_06B_1_0407_21_MW_lesen.htm
J217_8K_38_0AW_1_0307_21_MW_lesen.htm
J217_8K_38_0AW_1_0407_21_Pinbelegung.htm
J217_8K_38_0AW_1_0807_21_Bauteile_im_Steuergeraet.htm
J217_8K_38_0B6_1_0407_21_ersetzen.htm
J217_8K_38_0B6_1_0407_21_Pinbelegung.htm
J587_8K_37_____1_0108_21_POSINFO.htm
J587_8K_37_____2_0108_21_TipINFO.htm

Read measured values

Audi A4/A5 2008 > Multitronic 0AW, front-wheel drive

 

The following measured values can be displayed:

 

 

10 - Engine speed

(This signal is transmitted from the engine control unit over the drive train data bus to the gearbox control unit.)

Unit: 1 rpm

 

11 - Engine speed, discrete

(This signal is transmitted from the engine control unit over a dedicated wire to the gearbox control unit.)

Unit: 1 rpm

 

12 - Gearbox input speed

(This signal is acquired by the gearbox input speed sender -G182.)

Unit: 1 rpm

 

13 - Gearbox input speed 2

(This signal is acquired by the gearbox input speed sender 2 -G612.)

Unit: 1 rpm

 

14 - Gearbox input speed, specification

Unit: 1 rpm

 

15 - Gearbox output speed

(This signal is acquired by the gearbox output speed sender -G195.)

Unit: 1 rpm

 

16 - Engine specified idling speed

Unit: 1 rpm

 

17 - Gearbox specified idling speed

Unit: 1 rpm

 

18 - Specified gradient of input speed

Unit: rpm/s

 

19 - Gradient of input speed

Unit: rpm/s

 

 

20 - Control unit temperature

(This signal is acquired by a temperature sensor in the control unit electronics.)

Unit: °C

 

21 - Gearbox oil temperature

(This signal is acquired by the gearbox oil temperature sender -G93.)

Unit: °C

 

22 - Coolant temperature

Unit: °C

 

 

30 - Engaged gear

Possible values:

I variable

I R

I without power transmission

I 1

I 2

I 3

I 4

I 5

I 6

I 7

I 8

I not defined

 

31 - Gear (auto)

Possible values:

I P

I PR (between P and R)

I R

I RN (between R and N)

I N

I ND (between N and D)

I D

I DS (between D and S)

I S

I not defined

 

32 - Gear position

Possible values:

I P

I R

I N

I D

I S

I Fault E6

I not defined

 

33 - Selector lever position

Possible values:

 I Automatic

I Tiptronic -

I Tiptronic +

I Error E1

I Error E2

I Error E3

I Error E4

I Error E5

I not defined

 

34 - Gear sensor / Hall sender A

Possible values:

I not active (in the following selector lever positions: P, R, N)

I active (in the following selector lever positions: D, S)

I Error

I not available

 

35 - Gear sensor / Hall sender B

Possible values:

I not active (in the following selector lever positions: P, D, S)

I active (in the following selector lever positions: R, N)

I Error

I not available

 

36 - Gear sensor / Hall sender C

Possible values:

I not active (in the following selector lever positions: N, D, S)

I active (in the following selector lever positions: P, R)

I Error

I not available

 

37 - Gear sensor / Hall sender D

Possible values:

I not active (in the following selector lever positions: P, N, D)

I active (in the following selector lever positions: R, S)

I Error

I not available

 

38 - Status Tiptronic +

Possible values:

I not active

I active

I Error

I not available

 

39 - Status Tiptronic -

Possible values:

I not active

I active

I Error

I not available

 

40 - Status Tiptronic / Tiptronic gate

Possible values:

I not active

I active

I Error

I not available

 

41 - Status Tiptronic / Tiptronic steering wheel +

Possible values:

I not active

I active

I Error

I not available

 

42 - Status Tiptronic / Tiptronic steering wheel -

Possible values:

I not active

I active

I Error

I not available

 

43 - Selector lever maximum pulse width High

Unit: ms

 

44 - Selector lever minimum pulse width High

Unit: ms

 

45 - Selector lever maximum pulse width Low

Unit: ms

 

46 - Selector lever minimum pulse width Low

Unit: ms

 

 

50 - Status selector lever lock

(This readout indicates the state of the selector lever lock solenoid -N110.)

Possible values:

I not active

I active

 

51 - Status starter inhibit

(This readout indicates the state of the P/N signal.)

Possible values:

I off

I on

 

52 - Status brake signals / brake pedal switch

Possible values:

I pressed

I not pressed

 

53 - Status brake signals / brake light switch

Possible values:

I pressed

I not pressed

 

54 - Status brake signals / validity of brake pressure information

Possible values:

I invalid

I valid

 

55 - Status brake signals / validity of brake pedal information

Possible values:

I invalid

I valid

 

56 - Accelerator pedal position

(This signal is transmitted by the accelerator pedal position sender over the drive train data bus to the gearbox control unit.)

Possible values:

I 0 to 100 %

 

57 - Status kickdown

(The kickdown signal is transmitted by the accelerator pedal position sender over the drive train data bus to the gearbox control unit.)

Possible values:

I not active

I active

 

 

60 - Terminal 30 voltage

Possible values:

I approx. battery voltage (in Volts)

 

61 - Terminal 15 voltage

Possible values:

I approx. battery voltage (in Volts)

 

62 - Status terminal 15

Possible values:

I Terminal 15 on

I Terminal 15 off

 

 

70 - Vehicle speed from gearbox

Unit: km/h

 

 

80 - Activation current of disk set adjustment

Unit: mA

 

81 - Activation current of clutch activation

Unit: mA

 

82 - Activation current of cooling and safety valve

Unit: mA

 

83 - Specified current of transmission valve

Unit: mA

 

 

100 - Clutch pressure

Unit: bar

 

101 - Specified clutch pressure

Unit: bar

 

102 - Torque sensor pressure

Unit: bar

 

103 - Specified engine torque on engagement by gearbox

Unit: Nm

 

104 - Engine torque

(The engine torque is transmitted from the engine control unit over the drive train data bus to the gearbox control unit)

Unit: Nm

 

105 - Engine torque, maximum value

Unit: Nm

 

106 - Specified clutch torque

Unit: Nm

 

107 - Torque gradient, maximum value

Unit: Nm/s

 

108 - Transmission ratio

 

109 - Underdrive transmission ratio

 

110 - Overdrive transmission ratio

 

111 - Track reinforcement of disk set control

 

112 - Torque transfer function

 

113 - Adaption of clutch characteristic for forward creep torque

Unit: mA

 

114 - Adaption of clutch characteristic for reverse creep torque

Unit: mA

 

115 - Adaption of clutch characteristic, forward

Unit: mA

 

116 - Adaption of clutch characteristic forward, maximum torque

Unit: mA

 

117 - Adaption of clutch characteristic forward, minimum torque

Unit: mA

 

118 - Adaption of clutch characteristic forward, maximum torque in driving cycle

Unit: mA

 

119 - Adaption of clutch characteristic reverse, minimum torque

Unit: mA

 

120 - Adaption of clutch characteristic reverse, maximum torque in driving cycle

Unit: mA

 

121 - Clutch pressure adaption, current at 0 bar

Unit: mA

 

122 - Clutch pressure adaption, current at 10 bar

Unit: mA

 

123 - Adaption of  starting, forward

Possible values:

I running

I completed successfully

 

124 - Adaption of  starting, reverse

Possible values:

I running

I completed successfully

 

125 - Disk set overpressing

Possible values:

I not active

I active

 

126 - Clutch overpressing

Possible values:

I not active

I active

 

127 - Clutch status

 

128 - Run-on

Possible values:

I not active

I active

 

129 - Gearbox status / Direction of travel

(This readout indicates the detected direction of travel of the gearbox. The direction of travel is determined by the two gearbox output speed senders -G182/-G612. If one of the two senders is faulty, no direction is detected)

Possible values:

I 0 - forward

I 1 - reverse

I 2 - not detected

I 3 - not defined

 

130 - Gearbox status / Status selector lever lock

(This readout indicates the state of the selector lever lock solenoid -N110.)

Possible values:

I not active

I active

 

131 - Gearbox status / starter inhibit

Possible values:

I not active

I active

 

132 - Gearbox status / synchronism

Possible values:

I 0 - Asynchronous (Asynchronous signifies that the forward or reverse clutch at the gearbox input is open or the gearbox is in the starting-off phase.)

I 1 - Synchronous (Synchronous signifies that the forward or reverse clutch at the gearbox input is closed and is no longer slipping.)

 

 

140 - Status driving state influencing / traction control

Possible values:

I not active

I active

I Error

I not available

 

141 - Status driving state influencing / brake

Possible values:

I not active

I active

I Error

I not available

 

142 - Status driving state influencing / electronic differential lock

Possible values:

I not active

I active

I Error

I not available

 

143 - Status driving state influencing / electronic stabilisation program

Possible values:

I not active

I active

I Error

I not available

 

144 - Status driving state influencing / cruise control system

Possible values:

I not active

I active

I Error

I not available

 

145 - Status driving state influencing / kickdown

Possible values:

I not active

I active

I Error

I not available

 

146 - Status driving state influencing / engine torque tracking control

Possible values:

I not active

I active

I Error

I not available

 

 

150 - Motion resistance index

 

151 - Distance

Unit: km

 

152 - Run-in counter 1

 

153 - Run-in counter 2

 

 

160 - Counter, clutch pressure monitoring

(This readout indicates the total number of activations of the safety valve. If a fault is detected in the oil circuit, in some situations the safety valve is tripped by the control unit.)

Possible values:

J 0: No tripping of safety valve detected so far.

J above 0: One or more trips of the safety valve was detected. To create a more accurate diagnosis, measured value 161 - Debounce counter, clutch pressure monitoring - must be analysed.

 

161 - Debounce counter, clutch pressure monitoring

(This readout indicates the number of activations of the safety valve. If a fault is detected in the oil circuit, in some situations the safety valve is tripped by the control unit. With each trip of the safety valve the readout is increased by the value 10. If no more faults are detected in a new driving cycle, the readout is reduced by 1. At a readout of 70 fault P177300 - Hydraulic pressure sender 1 -G193, signal too large - is entered.)

Possible values:

J 0: No tripping of safety valve detected so far

J above 0: One or more trips of the safety valve was detected

(example: If a value of 30 is measured during a driving cycle, and the ignition then switched off and back on again, a new driving cycle executed, then the measurement read again and a readout of 29 found, the oil circuit is OK again. However, if the readout is 40 the problem in the oil circuit persists.)

 

162 - Status of cooling and safety valve

Possible values:

J 0: The safety valve has not tripped

J above 0: The safety valve has tripped, the gearbox oil circuit is not OK

 

165 - Status of clutch control valve flush / Number of flushes

 

166 - Status of clutch control valve flush / Ineffective flushes

 

 

170 - Unlearn counter after OBD

 

 

180 - Total drive time

Unit: h

 

181 - Drive time percentage economy

Unit: %

 

182 - Drive time percentage sport

Unit: %

 

183 - Drive time percentage manual

Unit: %

 

 

200 - Load profile

comprising

 J Chassis number, operating time 2

J Year

J Month

J Day

J Hours

J Minutes

J Seconds

 

 

250 - Snapshot

These readouts contain all the information available when the last fault occurred in the gearbox.

 

 

280 - Analysis

These readouts are required for analysis purposes.

The information contained is insufficient for fault finding.

 

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