Page 10 of 128
AUTOMATIC TRANSMISSION
Fault finding – System operation23A
23A-10V4 MR-372-J84-23A050$132.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
COMPUTER INPUTS AND OUTPUTS
INPUTS OUTPUTS
Diagnostic socket
Automatic
transmission
computer
Solenoid valve control
+ battery feed
+ after ignition feed + warning lights display
Intersystem signals + diagnostic
socketIntersystem signal + diagnostic
socket
Driver actions (brake light switch,
gear selector, multifunction
switch)Gear lever lock
AUTO sensors (turbine speed, oil
pressure, oil temperature)Reversing lights
Earth
Wire connection
Multiplexed connections
Page 63 of 128

AUTOMATIC TRANSMISSION
Fault finding – Conformity check23A
23A - 63V4 MR-372-J84-23A050$462.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
MAIN SCREEN (continued 1)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(no present or stored faults).
Application conditions: engine stopped, ignition on.
The values indicated in this conformity check are given as examples.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
5Brake pedalET142:Brake pedal pressedYES, if the brake pedal
is depressed
NO, if the brake pedal
is not depressedIn the event of a
fault, refer to the
interpretation of this
status.
6Brake switchET003:Brake light switch
(opening)ACTIVE, if the brake
pedal is not depressed
INACTIVE, if the brake
pedal is depressedIn the event of a
fault, refer to the
interpretation of this
status.
ET004:STOP light contact
(closure)INACTIVE, if the brake
pedal is not depressed
ACTIVE, if the brake
pedal is depressed
7Selection modeET097: Manual mode INACTIVEACTIVE, if lever is in
position M
8Sequential lever
switchET127:Lower sequential
lever switchOPEN, CLOSED, if
selector lever in
position M-
In the event of a
fault, refer to the
interpretation of this
status. ET128:Upper sequential
lever switchOPEN, CLOSED, if
selector lever in
position M+
ET155:Third gear hold
contactOPEN
9Driving modeET079:Economy modeYES, if driving is
economical
NO, if driving is 'sporty' NONE
10Gearbox oil
temperaturePR004:Gearbox oil
temperature- 40 < X < 140 ˚C In the event of a
fault, consult the
interpretation of this
parameter.
Page 69 of 128

AUTOMATIC TRANSMISSION
Fault finding – Conformity check23A
23A - 69V4 MR-372-J84-23A050$462.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
SUB-FUNCTION: LEVER LOCK
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(no present or stored faults).
Application conditions: engine stopped, ignition on.
The values indicated in this conformity check are given as examples.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Gear lever
positionET012:Gear lever positionP if selector is in
position P
N if selector is in
position N.
R if selector is in
position R.
D if selector is in
position D.
M if selector is in
position M.
M+ if selector is in
position M+.
M- if selector is in
position M-.In the event of a
fault, refer to the
interpretation of this
status.
2Brake pedalET142:Brake pedal pressedYES, if brake pedal is
pressed
NO, if brake pedal is
not pressed In the event of a
fault, refer to the
interpretation of this
status.
ET003:Brake light switch
(open)ACTIVE, if brake
pedal is not pressed
INACTIVE, if brake
pedal is pressed In the event of a
fault, refer to the
interpretation of this
status.
ET004:Brake light switch
(closure)ACTIVE, if brake
pedal is not pressed
INACTIVE, if brake
pedal is pressedIn the event of a
fault, refer to the
interpretation of this
status.
3Selector lever
lockingET157:Gear lever unlockingYES, if brake pedal is
pressed
NO, if brake pedal is
not pressed
Page 73 of 128

AUTOMATIC TRANSMISSION
Fault finding – Conformity check23A
23A - 73V4 MR-372-J84-23A050$462.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
SUB-FUNCTION: STATIONARY DECLUTCHING (CONTINUED)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(no present or stored faults).
Application conditions: engine stopped, ignition on.
The values indicated in this conformity check are given as examples.
Order FunctionParameter or Status checked
or ActionDisplay and Notes Fault finding
4Brake pedal
pressedET142:Brake pedal pressedYES, if the brake pedal
is depressed
NO, if the brake pedal
is not depressedIn the event of a
fault, refer to the
interpretation of this
status.
5Brake pedalET003:Brake light switch
(opening)OPEN, brake pedal
released.
CLOSED, brake pedal
depressedIn the event of a
fault, refer to the
interpretation of this
status.
6Brake pedalET004:Brake light switch
(closure)CLOSED, brake pedal
released.
OPEN, brake pedal
depressed.In the event of a
fault, refer to the
interpretation of this
status.
Page 75 of 128

AUTOMATIC TRANSMISSION
Fault finding – Conformity check23A
23A - 75V4 MR-372-J84-23A050$462.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
SUB-FUNCTION: CREEPING AT IDLE SPEED (CONTINUED)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(no present or stored faults).
Application conditions: engine stopped, ignition on.
The values indicated in this conformity check are given as examples.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
6Standard pedal
positionPR135:Standard pedal
position% In the event of a
fault, consult the
interpretation of this
parameter.
7Brake pedalET003:Brake light
switch (opening)OPEN, brake pedal
released.
CLOSED, brake pedal
depressed.In the event of a
fault, refer to the
interpretation of this
status.
8Brake pedalET004:Brake light
switch (closure)CLOSED, brake pedal
released.
OPEN, brake pedal
depressed.In the event of a
fault, refer to the
interpretation of this
status.
9Gear engagedET013:Gear engagedR for reverse.
1P for 1
st locked.
2P for 2nd locked.
3P for 3rd locked.
4P for 4th locked.
1G for 1st slipping.
2G for 2nd slipping.
3G for 3rd slipping.
4G for 4th slipping.
1 for 1st unlocked.
2 for 2nd unlocked.
3 for 3rd unlocked.
4 for 4th unlocked.In the event of a
fault, refer to the
interpretation of this
status.
Page 76 of 128

AUTOMATIC TRANSMISSION
Fault finding – Status summary table23A
23A - 76V4 MR-372-J84-23A050$528.mif
SIEMENS TA2000
Vdiag No.: 10-11-15AUTOMATIC TRANSMISSION
Fault finding – Status summary table
*SV: solenoid valveTool status Diagnostic tool title
ET001Solenoid valve supply
ET003Brake light switch (opening)
ET004Brake light switch (closure)
ET010Oil too hot signal
ET012Gear lever position
ET013Gear engaged
ET020Exchanger flow control SV* control
ET021Sequence solenoid 1 control
ET022Sequence solenoid 2 control
ET023Sequence solenoid valve 3 control
ET024Sequence solenoid valve 4 control
ET025Sequence solenoid valve 5 control
ET026Sequence solenoid valve 6 control
ET071Torque converter
ET079Economy mode
ET083Old oil
ET097Manual mode
ET108Torque reduction
ET123Multifunction switch S2
ET124Multifunction switch S3
ET125Multifunction switch S4
ET126Multifunction switch P/N
ET127Lower sequential lever switch
ET128Upper sequential lever switch
ET142Brake pedal pressed
ET155Third gear hold contact
ET157Gear lever unlocking
MR-372-J84-23A050$528.mif
Page 78 of 128

AUTOMATIC TRANSMISSION
Fault finding – Interpretation of statuses23A
23A-78V4 MR-372-J84-23A050$594.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
ET003
BRAKE LIGHT SWITCH (OPENING)
NOTESThere must be no present or stored faults.
The status displays OPEN with the pedal released and changes to CLOSED with the brake pedal depressed.
Check the cleanliness and the condition of the brake light switch connections.
Check the positioning, setting and correct operation of the brake light switch (Pay attention to the floor carpet which
can block the switch).
Disconnect the battery.
Disconnect the computer. Check the cleanliness and condition of the connections.
Use the Universal bornier Elé. 1681 to check the insulation, continuity and the absence of interference resistance
on the following connection:
●Connection code 5A, between components 119 and 160.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the correct status is not displayed, replace the switch.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2000_V10_ET003/DP0TA2000_V11_ET003/DP0TA2000_V15_ET003
Page 79 of 128

AUTOMATIC TRANSMISSION
Fault finding – Interpretation of statuses23A
23A-79V4 MR-372-J84-23A050$594.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
ET004
STOP LIGHT SWITCH (CLOSURE)
NOTESThere must be no present or stored faults.
The status displays CLOSED with the pedal released and changes to OPEN with the brake pedal depressed.
Check the cleanliness and the condition of the brake light switch connections.
Check the positioning, setting and correct operation of the brake light switch (Pay attention to the floor carpet
which can block the switch).
Disconnect the battery.
Disconnect the computer. Check the cleanliness and condition of the connections.
Use the Universal bornier Elé. 1681 to check the insulation, continuity and the absence of interference
resistance on the following connection:
●Connection code 5A, between components 119 and 160.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Repair if necessary.
If the correct status is not displayed, replace the switch.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2000_V10_ET004/DP0TA2000_V11_ET004/DP0TA2000_V15_ET004