Page 5 of 139

AUTOMATIC TRANSMISSION
Fault finding - Introduction
23A
23A - 5V5 MR-372-J84-23A100$058.mif
SIEMENS TA2005
Vdiag No.: 14-18
4. FAULT FINDING PROCEDURE (continued)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring harness may temporarily remove the cause of a fault.
Electrical measurements of the voltage, resistance and insulation are generally correct, especially if the fault is not
present when analysing (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Tactile inspection
While manipulating the wiring harness, use the diagnostic tool to note any change in fault status from stored or
present.
Check that the connectors are correctly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Check that the clips and tabs are correctly locked in the sockets.
Make sure that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Check the continuity/insulation
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or to another wire.
If a fault is detected, repair or replace the wiring harness.
Page 11 of 139
AUTOMATIC TRANSMISSION
Fault finding - System operation
23A
23A - 11V5 MR-372-J84-23A100$116.mif
SIEMENS TA2005
Vdiag No.: 14-18
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
Multiplex connection
Page 13 of 139

Fault finding - Configurations and programming23A
23A - 13V5 MR-372-J84-23A100$232.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Configurations and programming
PROGRAMMING
●VP001 Enter VIN:
As it is necessary to enter the VIN each time dialogue is established with the diagnostic tool, it must be
programmed into each vehicle computer whenever a computer is replaced.
Programming procedure:
–Connect the diagnostic tool.
–Consult the fault finding procedure for the automatic transmission.
–Select configuration VP001 Enter VIN.
–Enter the VIN.
–Exit fault finding mode.
–Switch off the ignition.
–Wait for the end of Power-latch: over 10 seconds.
●VP009 Enter last After-Sales operation date:
Every time work is carried out on the automatic transmission in the workshop, enter the date of the
operation.
Select command VP009 Enter last After-Sales operation date on the diagnostic tool, then use the tool's
keypad to enter the date of the operation.
●VP015 Transfer oil condition meter:
Transfer the oil wear counter code from the old computer.
Select command VP015 Transfer oil wear counter on the diagnostic tool, then use the keypad to enter
the code found on the replaced computer.
●VP016 Enter gearbox oil service date:
Select command VP016 Enter gearbox oil service date on the diagnostic tool, then use the keypad to
enter the date found on the replaced computer.
* The immobiliser warning light will flash a few seconds after the ignition is switched off.
MR-372-J84-23A100$232.mif
Page 59 of 139

AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-59V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
* The immobiliser warning light will flash for a few seconds after the ignition is switched off.DF232
PRESENT
OR
STORED
COMPUTER
1.DEF: Internal electronic fault
NOTESSpecial note:
The fault relates to an internal computer fault.
If the fault is stored, clear the fault from the computer memory.
Switch off the ignition, wait until the end of power latch* then switch the ignition back on and re-establish dialogue:
Check for + 12 V on connection AP4 of component 119.
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 the wiring.
Check for earth on connection N of component 119.
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 the wiring.
If the problem is still present, contact the Techline.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DP0TA2005_V14_DF232/DP0TA2005_V18_DF232
Page 60 of 139

AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-60V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
* The immobiliser warning light will flash for a few seconds after the ignition is switched off.DF233
PRESENT
OR
STORED
COMPUTER
1.DEF: Internal electronic fault
NOTESSpecial note:
The fault relates to an internal computer fault.
If the fault is stored, clear the fault from the computer memory.
Switch off the ignition, wait until the end of power latch* then switch the ignition back on and re-establish dialogue:
Check for + 12 V on connection AP4 of component 119.
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 the wiring.
Check for earth on connection N of component 119.
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 the wiring.
If the problem is still present, contact the Techline.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DP0TA2005_V14_DF233/DP0TA2005_V18_DF233
Page 61 of 139

AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-61V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
* The immobiliser warning light will flash a few seconds after the ignition is switched off.DF234
PRESENT
OR
STORED
COMPUTER
1.DEF: Internal electronic fault
NOTESSpecial note:
The fault relates to an internal computer fault.
If the fault is stored, clear the fault from the computer memory.
Switch off the ignition, wait until the end of power latch* then switch the ignition back on and re-establish dialogue:
Check for + 12 V on connection AP4 of component 119.
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 the wiring.
Check for earth on connection N of component 119.
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 the wiring.
If the problem is still present, contact the Techline.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DP0TA2005_V14_DF234/DP0TA2005_V18_DF234
Page 81 of 139

AUTOMATIC TRANSMISSION
Fault finding - Conformity check
23A
23A - 81V5 MR-372-J84-23A100$464.mif
SIEMENS TA2005
Vdiag No.: 14-18
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 pedalET003:Brake light
switch (opening)OPEN, if brake pedal is not
depressed.
CLOSED, if brake pedal is
depressed.In the event of a
fault, refer to the
interpretation of this
status.
3Brake pedalET004:Brake light
switch (closure)OPEN, if brake pedal is
depressed.
CLOSED, if brake pedal is
not depressed.In the event of a
fault, refer to the
interpretation of this
status.
4Sequential
actuator controlAC024:Sequential
actuator controlCommand used to actuate
all the solenoid valves.In the event of a
fault, refer to the
interpretation of this
command.
Page 85 of 139

AUTOMATIC TRANSMISSION
Fault finding - Conformity check
23A
23A - 85V5 MR-372-J84-23A100$464.mif
SIEMENS TA2005
Vdiag No.: 14-18
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 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.
5Brake 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.
6Sequential
actuator controlAC024:Sequential
actuator controlCommand used to actuate
all the solenoid valves.In the event of a
fault, refer to the
interpretation of this
command.