AUTOMATIC TRANSMISSION
Fault finding - Interpretation of parameters23A
23A - 119V5 MR-372-J84-23A100$696.mif
SIEMENS TA2005
Vdiag No.: 14-18
PR126
CURRENT TURBINE SPEED
NOTESThere must be no present or stored faults.
Check the cleanliness and condition of the turbine speed sensor and its connections.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V and the
following connections:
●connection code 5DA, between components 119 and 1017,
●connection code 5DB, between components 119 and 1017.
If any of the 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.
Check the turbine speed on the diagnostic tool:
Gear lever position at N or P.
Oil temperature 43 ˚C: turbine speed ~ 681 rpm and engine speed: ~ 743 rpm.
Oil temperature 45 ˚C: turbine speed ~ 654 rpm and engine speed: ~ 743 rpm.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2005_V14_PR126/DP0TA2005_V18_PR126
Fault finding - Interpretation of commands23A
23A - 126V5 MR-372-J84-23A100$812.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Interpretation of commands
AC024
ACTUATOR SEQUENTIAL CONTROL
NOTESCheck the 30 A permanent computer supply fuse in the Protection and Switching Unit.
Check the 5 A computer after ignition feed fuse in the Protection and Switching Unit.
Replace the fuses if necessary.
Check the cleanliness and condition of the connections.
Engine speed zero and gear lever in position P or N.
This command enables all the automatic transmission solenoid valve actuators to be operated.
Check the insulation, continuity and absence of interference resistance on the following connections:
●connection code 5DN, between components 119 and 1019,
●connection code 5BA, between components 119 and 754,
●connection code 5AU, between components 119 and 754.
If any of the 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.
Control of solenoid valve EVS1:
●connection code 5AV, between components 119 and 754.
Control of solenoid valve EVS2:
●connection code 5AW, between components 119 and 754.
Control of solenoid valve EVS3:
●connection code 5AX, between components 119 and 754.
Control of solenoid valve EVS4:
●connection code 5AY, between components 119 and 754.
Control of solenoid valve EVS5:
●connection code 5DL, between components 119 and 754.
Control of solenoid valve EVS6:
●connection code 5DM, between components 119 and 754.
If any of the 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.
Test the solenoid valves then check for faults on the computer.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2005_V14_AC024/DP0TA2005_V18_AC024
MR-372-J84-23A100$812.mif
Fault finding - Fault Finding Chart23A
23A -128V5 MR-372-J84-23A100$928.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart
ALP1 No dialogue with the computer
NOTESNone.
Try the diagnostic tool on another vehicle.
Check:
–the connection between the diagnostic tool and the diagnostic socket (connection and cable in good condition),
–the power supply to the computer,
–the engine and passenger compartment fuses.
Check that the CLIP sensor is supplied by connections BP32, MAN and NAM of component 225, displayed when
both red indicator lights on the sensor illuminate.
Make sure that the CLIP sensor is connected to the computer's USB port.
Make sure the CLIP sensor is communicating properly with the vehicle's computers; this can be seen by the two
green diodes on the sensor lighting up.
Check the following connections on component 225:
●connection code AP43 (+ after ignition feed),
●connection code BP32 (+ battery feed),
●connection code MAN (earth).
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 the wiring.
Disconnect the automatic transmission computer connector to check the insulation, continuity and the absence
of interference resistance of the following connections:
●connection code AP4, between components 119 and 1337,
●connection code BP42, between components 119 and 1337,
●connection code N, between components 119 and 107,
●connection code 3MT, between components 119 and 120,
●connection code 3MS, 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 the wiring.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
DP0TA2005_V14_ALP01/DP0TA2005_V18_ALP01
MR-372-J84-23A100$928.mif
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
AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart23A
23A -134V5 MR-372-J84-23A100$928.mif
SIEMENS TA2005
Vdiag No.: 14-18
ALP5 Erratic gear changes
NOTESOnly refer to Customer complaints after carrying out a complete fault finding
procedure with the diagnostic tool and the conformity check.
Run a multiplex network test (see 88B, Multiplex).
Check for the following parameters:
–PR135 Standard pedal position,
–PR136 Raw pedal position.
Carry out a road test using the diagnostic tool, making sure that status ET013 Gear engaged operates normally.
If the customer complaint occurs with the brake pedal released, check that status ET004 Brake light switch
(Closed) is NO.
If not, adjust the brake light switch and the brake pedal.
Make sure that the instrument panel display of the gear engaged matches the gear lever position.
Check the automatic transmission wiring harness (sequence solenoid valve control).
Replace it if necessary.
Check that the gear lever cable is working properly and adjust it if necessary.
Check that the multifunction switch is working correctly.
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_ALP05/DP0TA2005_V18_ALP05
AUTOMATIC TRANSMISSION
Fault finding - Fault Finding Chart23A
23A -135V5 MR-372-J84-23A100$928.mif
SIEMENS TA2005
Vdiag No.: 14-18
ALP6 Reversing lights do not work
NOTESOnly refer to Customer complaints after carrying out a complete fault finding
procedure with the diagnostic tool and the conformity check.
Check:
–the condition of the fuses in the UPC.
–the condition of the bulbs.
–the condition of the bulb contacts. Repair if necessary.
–Check that the earth is present for the following connections:
●connection code MAQ of component 172,
●connection code MZ of component 173.
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 the wiring.
Switch off the ignition and disconnect the modular connector.
Switch on the ignition again and check for + 12 V after ignition feed on connection AP11 of component 485.
Switch off the ignition and check the continuity on the following connections, with the gear lever in position R:
●connection code H66P, between components 485 and 1337,
●connection code AP11, between components 485 and 1337.
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 the wiring.
Check that the gear lever cable is correctly adjusted and check the instrument panel display.
If the continuity is faulty, replace the multifunction switch.
Switch on the ignition.
With the gear lever in position "R", check for + 12 V after ignition feed on the following connections:
●connection code H66P between components 172 and 1337,
●connection code H66P, between components 173 and 1337.
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 the wiring.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
DP0TA2005_V14_ALP06/DP0TA2005_V18_ALP06