Page 82 of 139

AUTOMATIC TRANSMISSION
Fault finding - Conformity check
23A
23A - 82V5 MR-372-J84-23A100$464.mif
SIEMENS TA2005
Vdiag No.: 14-18
SUB-FUNCTION: LOCKUP/UNLOCKING
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
1Engine speedPR006:Engine speed0 rpmIn the event of a
fault, consult the
interpretation of this
parameter.
2Calculated
engine torquePR123:Calculated
engine torque0 NmIn the event of a
fault, consult the
interpretation of this
parameter.
3Engine speedPR007:Turbine speed0 rpmIn the event of a
fault, consult the
interpretation of this
parameter.
4Engine/turbine
speed
differencePR128:Engine/turbine
speed
difference0 rpmIn the event of a
fault, consult the
interpretation of this
parameter.
5Current turbine
speedPR126:Current turbine
speed0 rpmIn the event of a
fault, consult the
interpretation of this
parameter.
6Reference
pressurePR138:Reference
pressure21 barIn the event of a
fault, consult the
interpretation of this
parameter.
7Oil pressurePR003:Oil pressureX < 0.2 barIn the event of a
fault, consult the
interpretation of this
parameter.
Page 88 of 139

Fault finding - Status summary table23A
23A - 88V5 MR-372-J84-23A100$522.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Status summary table
Tool status Diagnostic tool title
ET001Solenoid valve supply
ET003Brake light switch (opening)
ET004Brake light switch (closure)
ET010Oil too hot signal
ET011Engine speed signal
ET012Gear lever position
ET013Gear engaged
ET020Exchanger flow control solenoid valve control
ET021Sequence solenoid valve 1 control
ET022Sequence solenoid valve 2 control
ET023Sequence solenoid valve 3 control
ET024Sequence solenoid valve 4 control
ET025Sequence solenoid valve 5 control
ET026Sequence solenoid valve 6 control
ET081Snow 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
ET157Gear lever unlocking
AFTER REPAIRRepeat the conformity check from the start.
MR-372-J84-23A100$522.mif
Page 108 of 139
Fault finding - Parameter summary table23A
23A - 108V5 MR-372-J84-23A100$638.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Parameter summary table
Tool parameter Diagnostic tool title
PR001Coolant temperature
PR003Oil pressure
PR004Gearbox oil temperature
PR006Engine speed
PR007Turbine speed
PR008Computer feed voltage
PR105Vehicle speed
PR118Gearbox oil pressure sensor voltage
PR123Calculated engine torque
PR124Accel. pedal position for downshifting
PR126Current turbine speed
PR128Engine/turbine speed difference
PR135Standard pedal position
PR136Raw pedal position
PR138Reference pressure
PR146Difference between reference and oil pressure
MR-372-J84-23A100$638.mif
Page 117 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of parameters23A
23A - 117V5 MR-372-J84-23A100$696.mif
SIEMENS TA2005
Vdiag No.: 14-18
PR123
CALCULATED ENGINE TORQUE
NOTESThere must be no present or stored faults.
Run a multiplex network test (see 88B, Multiplex).
If parameter PR123 Calculated engine torque is absent, refer to the interpretation of the parameter (see 17B,
Petrol injection or 13B, Diesel injection).
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2005_V14_PR123/DP0TA2005_V18_PR123
Page 132 of 139

AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart23A
23A -132V5 MR-372-J84-23A100$928.mif
SIEMENS TA2005
Vdiag No.: 14-18
ALP3
CONTINUED 2
Refer to the procedure and the safety instructions for carrying out a setting point check on the torque converter.
Theoretical engine speed at setting point: 2300 ± 150 rpm
Is the value of the setting point wrong or is there an internal noise in the converter?
Carry out a road test, observing the engine speed
on the instrument panel and the information
displayed on the diagnostic tool (PR006 Engine
speed)Replace the torque converter, the lock-up solenoid
valve and the oil. If the oil is burnt, also replace the
hydraulic distributor and all the solenoid valves
(see MR 364 Mechanical, 23A, Automatic
transmission, Hydraulic distributor
(for Mégane II) and MR 370 Mechanical, 23A,
Automatic transmission, Hydraulic distributor
(for Scénic II)).
When replacing the torque converter, ensure that the
reaction shaft is securely attached to the hub of the
oil pump (flanged shaft).
Note:
A setting point which is too low may be due to a lack
of engine power. Does the engine speed change each time
there is a gear change?
The checks carried out have not provided any
evidence of a fault and the automatic
transmission appears to be working correctly.
If the vehicle does show the customer complaint
selected, continue with the entire fault finding
procedure.Replace the hydraulic distributor and all the solenoid
valves. (see MR 364 Mechanical, 23A, Automatic
transmission, Hydraulic distributor
(for Mégane II) and MR 370 Mechanical, 23A,
Automatic transmission, Hydraulic distributor
(for Scénic II)).
B
NO
NOYES
YESNO
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.