AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-45V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF131
PRESENT
OR
STOREDSLIPPAGE
1.DEF: Permanent low level
NOTESDeal with all other faults first.
Conditions for applying the fault finding procedure to stored faults:
Safe mode is triggered after a fault, not by the driver.
In particular, check that there are no faults on:
–the turbine speed sensor, DF244 Turbine speed sensor signal.
–the vehicle speed signal, DF230 Invalid vehicle speed multiplex signal.
Check that PR003 “Oil pressure” equals 21 bar. (forced setpoint)
Possible defective components:
Slave cylinder (brakes, clutch) or computer.
Then check cleanliness and condition of the gearbox oil.
If the fault is still present, contact 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_DF131/DP0TA2005_V18_DF131
AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart23A
23A -133V5 MR-372-J84-23A100$928.mif
SIEMENS TA2005
Vdiag No.: 14-18
ALP4 Automatic transmission malfunctioning on gear changing
NOTESOnly refer to Customer complaints after carrying out a complete fault finding
procedure with the diagnostic tool and the conformity check.
Automatic transmission malfunctions may be noted during gear changing without any fault being stored in the
computer.
These malfunctions may be linked to:
–connection faults (insulation: creates a fault, resistance) in the sequence solenoid valve control wiring
harnesses (EVS1 to EVS6).
Check the tightness and condition of the clips on all the solenoid valve control wiring connections from the
computer to each solenoid valve.
Use command AC024 Sequential actuators control to find any faults.
–Hydraulic distributor faults (hydraulic slide valve seizing, strainer/distributor seal) preventing the sequence
solenoid valves from working properly.
Check the oil's condition (colour, burnt or not) its level and pressure: increasing with engine/turbine speed.
–Loss of pressure when changing gear (clutch brakes/cylinder leaks)
Read the values of the following parameters (gear lever in position D or R: vehicle stationary and handbrake
applied) on the CLIP tool:
–PR003 Oil pressure,
–PR006 Engine speed,
–PR007 Turbine speed,
–PR138 Reference pressure,
–PR008 Computer feed voltage.
These parameters are associated with automatic transmission operation.
If one of the values is incorrect, note the fault it causes.
Replace the faulty part if necessary and carry out a check.
If the fault is still present, contact Techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
DP0TA2005_V14_ALP04/DP0TA2005_V18_ALP04
