Page 67 of 138

21B-67
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF232
DF233
DF234
PRESENT
OR
STOREDCOMPUTER
1.DEF : Internal electronic fault
NOTESSpecial note:
–fault warning light comes on.
Use the Wiring Diagrams Technical Note for New TWINGO.
Check the condition and position of the sequential gearbox fuses in the engine compartment and in the
passenger compartment.
Check the connection and condition of the 52-track connector of component 119.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check for + AVC on connection BP39 and for + after ignition feed on connection AP4 on the 52-track connector
of component 119.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the wiring, otherwise replace it.
Check the insulation, continuity and the absence of interference resistance on the following connection:
●Connection code N of earths MC - 12B and MC - 12A.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the wiring, otherwise replace it.
Clear the computer fault memory using command RZ001 "Stored fault(s)".
Switch off the ignition.
Switch on the ignition again and carry out a new check using the diagnostic tool.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF232 / BVRJH1_V04_DF233 / BVRJH1_V04_DF234
Page 69 of 138

21B-69
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF252
PRESENT
OR
STOREDPUMP RELAY
1.DEF : Relay jammed
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
Special note:
–all gear changes are inhibited,
–fault warning light comes on,
–automatic mode is inhibited.
Use the Wiring Diagrams Technical Note for New TWINGO.
After switching on the ignition, check that the PR018 “Hydraulic pressure” is between 40 bar and 50 bar.If this
is not the case, apply the interpretation for fault DF166 “Pressure sensor circuit”.
If the checks described in DF166 "Pressure sensor circuit" are correct and that PR018 "Hydraulic pressure"
indicates a lower pressure than that measured previously following activation of the pump motor, replace the
pressure sensor (see MR 411, 21B, Sequential gearbox, Solenoid valve unit: Removal - Refitting).
Disconnect the relay and check that there is no continuity between connections BP36 and 5AE of component
762.
Replace the relay if it is not correct.
Check the continuity and insulation of the following connection:
●Connection code 5AE,
Between components 724 and 762.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the wiring, otherwise replace it.
Check for the absence of + 12 V on connection 5AE of component 762.
Check the continuity and insulation of the following connection:
●Connection code 5AF,
Between components 119 and 762.
If the connection(s) are faulty and there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF252
Page 70 of 138

21B-70
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF254
PRESENT
OR
STOREDCLUTCH TEMPERATURE
1.DEF : Clutch overheating
NOTESPriorities when dealing with a number of faults:
Deal with other faults declared present first.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present when the clutch is used under severe conditions
(prolonged holding on a hill).
Special note:
–Instrument panel displays: “Sequential gearbox overheating”
–Fault warning light comes on.
–An engine speed wire fault or incorrect multiplex line value (speed equals 0) may
increase the occurrence of this fault.
Clear the stored fault and check that the clutch is not slipping by performing a road test, pulling away with a low
load then up or down an incline.
If the clutch slips, proceed in the following way:
–Pull away several times with low load and check parameter PR096 Clutch progressivity.
–If the fault is still present, replace the clutch.
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF254
Page 71 of 138

21B-71
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF256
PRESENT
OR
STOREDERRATIC GEAR JUMPING
1.DEF : Erratic gear jumping
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the previous gear has been engaged.
Special note:
Fault warning light comes on following erratic gear disengagement and after the
previous gear has been engaged.
Check that there are no engagement or selection sensor faults.
Repair if necessary.
Check that the selection control lever is correctly clipped onto the hydraulic unit.
Carry out the necessary repairs (see MR 411 Mechanical, 21B, Sequential gearbox, Electro-hydraulic unit,
Removal - Refitting).
Check that there is no water in the gearbox oil.
Repair if necessary.
Clear the faults using command RZ001 "Stored fault(s)".
Reprogram VP008 Program selection/engagement ranges.
Check there are no other faults by carrying out a road test.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF256
Page 72 of 138
21B-72
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF257
PRESENT
OR
STOREDSLOW LOSS OF HYDRAULIC PRESSURE
1.DEF : Slow loss of pressure
NOTESSpecial note:
Fault warning light comes on.
Small internal leak: replace the hydraulic unit or clutch solenoid valve (see MR 411 Mechanical, 21B, Sequential
gearbox, Electro-hydraulic unit: Removal - Refitting).
Slow external leak: repair or replace the component concerned (see Replacement of components).
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF257
Page 73 of 138
21B-73
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF258
PRESENT
OR
STOREDRAPID LOSS OF HYDRAULIC PRESSURE
1.DEF : Rapid loss of pressure
NOTESSpecial note:
Warning light comes on.
Small internal leak: replace the hydraulic unit or clutch solenoid valve (see MR 411 Mechanical, 21B, Sequential
gearbox, Electro-hydraulic unit: Removal - Refitting).
Slow external leak: repair or replace the component concerned (see Replacement of components).
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF258
Page 74 of 138
21B-74
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF259
PRESENT
OR
STOREDPRESSURE ACCUMULATOR
1.DEF : Pressure accumulator fault
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after low nitrogen pressure has been recorded at least
40 times.
Special note:
–Fault warning light comes on when low nitrogen pressure has been recorded at
least 40 times.
–Engine stalls when the vehicle is slowing down.
–Gear change impossible when driving.
Replace the accumulator (see MR 411 Mechanical, 21B, Sequential gearbox, Pressure accumulator:
Removal - Refitting).
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF259
Page 75 of 138
21B-75
MR-413-X44-21B000$472.mif
V2
SEQUENTIAL GEARBOX
Fault finding - Interpretation of faults
Vdiag No: 04
21B
DF262
PRESENT
OR
STOREDAUTO-ADAPTIVE PATTERN
1.DEF : Configuration/Initialisation
NOTESSpecial note:
–Fault warning light comes on.
–Automatic mode deactivated.
Carry out fault finding on the injection (see 17B, Petrol injection).
If there are no injection faults, this fault is only due to pulling away with significant skidding on a slippery road
followed by recovery of tyre grip.
Clear this fault using command RZ001 "Stored fault(s)".
AFTER REPAIRDeal with any faults detected by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_DF262