21B -127
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 2Cannot select a forward or reverse gear when stationary
Impossible to select N
Impossible to start engine with gear engaged, even with brake
pedal depressed
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
Use the Wiring Diagrams Technical Note for New TWINGO.
Check the + after ignition feeds and the earths of the sequential gearbox computer.
Check the condition of the gear lever contacts and that it is operating correctly (consult the interpretation of
statuses ET043 "Lever contact No. 0", ET044 "Lever contact No. 1", ET045 "Lever contact No. 2" and
ET046 Lever contact No. 3").
Repair if necessary.
Check for the presence and condition of the brake light switch supply fuse on the passenger compartment fuse
board.
Repair if necessary.
Check that the brake light switch connector is correctly connected, check the condition of the connections as well
as those of the computer.
If the connectors are faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the connectors; otherwise, replace the wiring.
Check that the brake light switch on the pedal is correctly fitted and adjusted.
Check for continuity, with the pedal depressed, between connections AP10 (track 2) and 65A of
component 160.
Replace the switch if necessary (see MR 411 Mechanical, 83D Cruise control, Brake light switch: Removal -
Refitting).
Check there is no continuity with the pedal released, between connections AP10 (track 2) and 65A of
component 160.
Replace the switch if necessary (see MR 411 Mechanical, 83D Cruise control, Brake light switch: Removal -
Refitting).
If the fault is still present, check the continuity of the following connection:
●Connection code 65A between components 160 and 119.
Also ensure the insulation to earth.
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP2
21B -129
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 4Cannot access automatic mode if semi-automatic mode was
previously selected
Cannot access semiautomatic mode if automatic mode was
previously selected
Switching to automatic mode possible if restarting engine
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
Use the Wiring Diagrams Technical Note for New TWINGO.
Check the connection and condition of the connectors of components 1058 and 119.
If the connectors are faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the connectors; otherwise, replace the wiring.
Apply the interpretation of statuses ET043 “Lever switch no. 0”, ET044 “Lever switch no. 1”, ET045 “Lever
switch no. 2” and ET046 “Lever switch no. 3”.
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP4
21B -130
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 5 No reversing lights
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
Use the Wiring Diagrams Technical Note for New TWINGO.
Check the condition of the bulbs for the reversing lights.
Replace if not correct.
Check the conformity of the supply fuse of the reversing light switch (15 A) located on the passenger
compartment fuse box.
Replace the fuse if not correct.
If, following replacement of the fuse and switching on the ignition, the fuse is not correct, check the insulation to
earth of connection AP3 between components 1016 and 155.
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.
Replace the faulty fuse.
If the fuse is correct, check the presence of + 12 V on connection AP3 of component 155.
If there is no + 12 V, check the continuity of connection AP3 between components 1016 and 155.
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.
Check the conformity of the reversing lights switch:
●Switch in rest position: insulation between connections AP3 and H66P of component 155.
●Switch depressed: continuity between connections AP3 and H66P of component 155.
Replace the reversing lights switch if not correct.
Check for the earth of the reversing light on the following connection(s):
●Left-hand drive: connection MF of component 172.
●Right-hand drive: connection MG of component 173.
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.
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP5
21B -132
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 6No creeping
Brake lights permanently lit
Forward or reverse gear can be selected without depressing the
brake pedal
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
In a case where there is no creeping, if the customer has heard the buzzer whilst
driving, it is normal for creeping to be prohibited (clutch overheating). Leave the clutch
to cool down and then check if there is any creep. Apply the following procedure if the
fault persists.
Use the Wiring Diagrams Technical Note for New TWINGO.
Check for the presence, condition and correct positioning of the brake light fuse in the passenger
compartment fuse box.
Check the connection and condition of the connectors of components 160, 156 and 119.
If the connectors are faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical
wiring, W iring: Precautions for repair), repair the connectors; otherwise, replace the wiring.
Check the fitting and adjustment of component 160 on the pedals.
Pedal depressed:
Check the continuity between connections AP10 (track 2) and 65A of component 160.
Check the insulation between connections AP10 (track 4) and 5A of component 160.
If the checks are incorrect, replace the switch (see MR 411 Mechanical systems, 83D Cruise control, Brake
light switch: Removal - Refitting).
Pedal released:
Check the insulation between connections AP10 (track 2) and 65A of component 160.
Check the continuity between connections AP10 (track 4) and 5A of component 160.
If the checks are incorrect, replace the switch (see MR 411 Mechanical systems, 83D Cruise control, Brake
light switch: Removal - Refitting).
Check the continuity and insulation from earth of the following connection:
●Connection code 65A,
between components 160 and 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 it.
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP6
21B -134
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 8Vehicle does not move forward with gear engaged and engine
running
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
Apply the fault finding procedure associated with the multiplex network test (see 88B, Multiplexing).
Check the mechanical condition of the clutch (no grease or leaks on the flywheel, clutch driven plate not cracked
or disintegrated, no broken parts, etc.).
Check the condition of the driveshaft (broken joint, internal gearbox mechanical fault etc.).
Repair or replace the faulty components.
If the engine speed remains at idle speed, check the positioning of the accelerator pedal sensor.
Run fault finding on the injection system (see 17B, Petrol Injection).
If the fault is still present, contact Techline.
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP8
21B -138
MR-413-X44-21B000$944.mif
V2
SEQUENTIAL GEARBOX
Diagnostic - Fault finding chart
Vdiag No: 04
21B
ALP 12 Vehicle jumps when engine is started
NOTESSpecial notes:
Only consult this customer complaint after a complete check with the diagnostic tool.
If a gear was engaged when there is a request to start the engine check the oil level in the sequential gearbox
circuit.
Check the operation of the brake pedal switch as well as the condition of the gear lever switches (consult the
interpretation of statuses: ET043 “Lever switch no. 0”, ET044 “Lever switch no. 1”, ET045 “Lever switch
no. 2” and ET046 “Lever switch no. 3”).
Ensure that the cylinder and the clutch fork are operating correctly (damage, seizing, part breakage, etc.).
AFTER REPAIRClear the computer fault memory. Switch off the ignition and wait 20 seconds.
Carry out a road test followed by another check with the diagnostic tool.
BVRJH1_V04_ALP12