Page 149 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 149V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC029
CLUTCH 2 SOLENOID VALVE
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC029 "Clutch 2 solenoid valve".
In the event of a fault, consult the interpretation of fault DF274 "Clutch 2 solenoid valve circuit".
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC029/AJ0_V05_AC029
Page 150 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 150V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC030
CLUTCH 3 SOLENOID VALVE
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC030 "Clutch 3 solenoid valve".
In the event of a fault, consult the interpretation of fault DF275 "Clutch 3 solenoid valve circuit".
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC030/AJ0_V05_AC030
Page 151 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 151V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC031
BRAKE 1 SOLENOID VALVE
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC031 "Brake 1 solenoid valve".
In the event of a fault, consult the interpretation of fault DF306 "Lock-up/brake 1 solenoid valve circuit".
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC031/AJ0_V05_AC031
Page 152 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 152V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC032
BRAKE 2 SOLENOID VALVE
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC032 "Brake 2 solenoid valve".
In the event of a fault, consult the interpretation of fault DF305 "Brake 2 solenoid valve circuit".
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC032/AJ0_V05_AC032
Page 153 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 153V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC086
"LS" PRESSURE REGULATION SOLENOID VALVE
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC086 ""LS" pressure regulation solenoid valve".
In the event of a fault, consult the interpretation of fault DF091 ""LS" pressure regulation solenoid valve
circuit".
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC086/AJ0_V05_AC086
Page 154 of 162
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
23A
23A - 154V3 MR-372-J84-23A000$855.mif
AJ0 BVA
Vdiag No.: 04, 05
AC088
GEAR LEVER LOCKING ELECTROMAGNET
NOTESSpecial notes:
Engine speed zero, vehicle speed zero and gear lever in position P.
Switch on the ignition, run command AC088 "Selection lever lock solenoid".
In the event of a fault, look for any damage to the wiring and check the condition and connection of the connectors
for components 119 and 129.
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 continuity and insulation of the following connection:
●connection code 5DU,
between components 119 and 129.
Check for + after ignition feed on connection BP42 of component 119.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact Techline.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
AJ0_V04_AC088/AJ0_V05_AC088
Page 156 of 162
AUTOMATIC TRANSMISSION
23A
23A - 156V3 MR-372-J84-23A000$945.mif
AJ0 BVA
Vdiag No.: 04, 05AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart
ALP1 No dialogue with the computer
NOTESSpecial notes:
Only consult this customer complaint after a multiplex network check using the
diagnostic tool.
Make sure that the vehicle + after ignition feed is activated. Check the presence and condition of the UPC automatic
transmission fuses.
Check that the tool is not the cause of the fault, by attempting dialogue with a different system (UCH, Injection,
etc.) on the same vehicle or another vehicle.
Carry out another multiplex network test on the vehicle using the diagnostic tool:
Is the automatic transmission computer recognised?
NO YES
Check that the computer connector is properly
connected and check the condition of its
connections.
Check for the automatic transmission supply fuse on
the passenger compartment connection unit, and its
condition.
Check the battery voltage:
9.5 V < battery voltage < 15.5 V
Carry out the necessary operations to obtain a
correct voltage: Carry out a full check on the battery
and the charging circuit (see Technical
Note 6014A, Charging circuit check).
Establish dialogue with the automatic transmission
computer.
Communication successful at first attempt?
NO YES
Is the identification
screen displayed
after 3 attempts?
End of fault finding.
AFTER REPAIRDeal with any faults detected by the diagnostic tool. Clear the computer memory.
Carry out a road test, then check with the diagnostic tool.
AJ0_V04_ALP01/AJ0_V05_ALP01
MR-372-J84-23A000$945.mif
Page 157 of 162
AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart
23A
23A - 157V3 MR-372-J84-23A000$945.mif
AJ0 BVA
Vdiag No.: 04, 05
ALP1
CONTINUED
Check for + 12 V on connection BP42 of component 119.
Check for + after ignition feed on connection AP4 of component 119.
Check for earth on connection N of component 119.
Check the insulation and the continuity of the following connections:
●connection code 3MS,
●connection code 3MT,
between components 119 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Run a multiplex network test (see 88B, Multiplex).
If the computer still does not respond, contact the Techline.
AFTER REPAIRDeal with any faults detected by the diagnostic tool. Clear the computer memory.
Carry out a road test, then check with the diagnostic tool.
