Page 49 of 139
Fault finding - Interpretation of faults23A
23A-49V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
DF183
PRESENT
OR
STOREDNO UCH MULTIPLEX SIGNAL
1.DEF: Carry out the multiplex network fault finding procedure
NOTESNone.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, run fault finding on the UCH system (see 87B, Passenger compartment
connection unit).
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_DF183/DP0TA2005_V18_DF183
MR-372-J84-23A100$406.mif
Page 50 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-50V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF185
PRESENT
OR
STOREDNO ABS/ESP MULTIPLEX SIGNAL
1.DEF: Carry out the multiplex network fault finding procedure
NOTESNone.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, carry out fault finding on the system (see 38C, ABS).
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_DF185/DP0TA2005_V18_DF185
Page 51 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-51V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF186
PRESENT
OR
STOREDINJECTION MULTIPLEX SIGNAL ABSENT
1.DEF: Carry out the multiplex network fault finding procedure
NOTESNone.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, carry out fault finding on the injection system (see 17B, Petrol injection or 13B, Diesel
injection).
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_DF186/DP0TA2005_V18_DF186
Page 52 of 139

AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-52V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF226
PRESENT
OR
STOREDAUTOMATIC TRANSMISSION INTERNAL PRESSURE
NOTESIf the following faults are present or stored, deal with them first:
–DF003 Sensor feeds.
–DF005 Oil pressure sensor circuit.
–DF023 Gearbox oil temperature sensor circuit.
–DF036 Pressure modulating solenoid valve circuit.
–DF244 Turbine speed sensor signal
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
Check the gearbox oil grade and level (see MR 364 Mechanical, 23A, Automatic transmission, Filling - levels
(for Mégane II) and MR 370 Mechanical, 23A, Automatic transmission, Oil change (for Scénic II)).
Check that the gearbox is not leaking oil
To locate the cap position, consult MR 364, Mechanical, 23A, Automatic transmission, Line pressure
measurement (for Mégane II) and MR 370, Mechanical, 23A, Automatic transmission, Line pressure
measurement (for Scénic II)).
Check the oil pressure with the engine switched off using PR003 Oil pressure: if the pressure is greater than
0.2 bars, replace the pressure sensor.
●Warm engine with gearbox oil temperature between 65 and 90˚C.
●Measure the line pressure under the 3 following conditions:
IMPORTANT
The vehicle must be stationary: handbrake on and brake pedal depressed, no accessories operating (e.g.:
air conditioning)
1engine speed idling:
Shift the gear lever to R, N and D, the pressure reading must be greater than 2.5 bar.
2engine speed at 1200 rpm:
–gear lever in R position, the pressure reading must be greater than 4 bar.
–gear lever in D position, the pressure reading in first gear must be greater than 5.5 bar.
3engine speed at 2200 rpm:
–gear lever in R position, the pressure reading must be greater than 11 bar.
–gear lever in D position, the pressure reading in first gear must be greater than 11 bar.
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_DF226/DP0TA2005_V18_DF226
Page 53 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-53V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF226
CONTINUED
If the line pressure recorded under one of these 3 conditions is incorrect, replace the line pressure sensor.
If the line pressures recorded under these 3 conditions are good, then the pressure sensor is operating correctly.
Replace the pressure regulating solenoid valve.
If the fault is still present after the pressure regulating solenoid valve has been replaced, replace the hydraulic
distributor and during refitting, take into account Technical Note 4194A Automatic transmission indicator strip
flashing for the adjustment of the ball detent blade
If the fault 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.
1
Page 54 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-54V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF227
PRESENT
OR
STOREDINVALID UCH BRAKE PEDAL MULTIPLEX SIGNAL
1.DEF: Multiplex frames absent or values invalid (fault with the computer generating
the signal or multiplex line connection fault)
NOTESNone.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, run fault finding on the UCH system (see 87B, Passenger compartment
connection unit).
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_DF227/DP0TA2005_V18_DF227
Page 55 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-55V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF228
PRESENT
OR
STOREDINVALID ABS TRANSVERSE ACCELERATION MULTIPLEX
SIGNAL
1.DEF: Multiplex frames absent or values invalid (fault with the computer generating
the signal or multiplex line connection fault)
NOTES–invalid ABS lateral acceleration multiplex signal:
Signal sent as multiplex frames by the ABS computer to the automatic transmission
computer to tell it whether the vehicle is tending to drift out (understeer).
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, carry out fault finding on the system (see 38C, ABS).
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_DF228/DP0TA2005_V18_DF228
Page 56 of 139
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-56V5 MR-372-J84-23A100$406.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF229
PRESENT
OR
STOREDINVALID ABS BRAKE MULTIPLEX SIGNALS
1.DEF: Multiplex frames absent or values invalid (fault with the computer generating
the signal or multiplex line connection fault)
NOTESNone.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, carry out fault finding on the system (see 38C, ABS).
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_DF229/DP0TA2005_V18_DF229