AUTOMATIC TRANSMISSION
Fault finding - Introduction
23A
23A - 6V5 MR-372-J84-23A100$058.mif
SIEMENS TA2005
Vdiag No.: 14-18
5. FAULT FINDING LOG
You will always be asked for this log:
–when requesting technical assistance from Techline,
–for approval requests when replacing parts for which approval is mandatory,
–to be attached to monitored parts for which reimbursement is requested. The log is needed for warranty
reimbursement, and enables better analysis of the parts removed.
6. SAFETY ADVICE
Safety rules must be observed during any work on a component to prevent any damage or injury:
–check the battery voltage to avoid incorrect operation of computer functions,
–use the appropriate tools,
–immobilise the vehicle for all tests in the workshop on the automatic transmission with the engine running. IMPORTANTIMPORTANT
Any fault on a complex system requires thorough fault finding with the appropriate tools. The
FAULT FINDING LOG, which should be completed during the procedure, enables you to keep
track of the procedure which is carried out. It is an essential document when consulting the
manufacturer.
IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING LOG EACH TIME FAULT FINDING IS
CARRIED OUT.
AUTOMATIC TRANSMISSION
Fault finding - System operation
23A
23A - 11V5 MR-372-J84-23A100$116.mif
SIEMENS TA2005
Vdiag No.: 14-18
COMPUTER INPUTS AND OUTPUTS
INPUTS OUTPUTS
Diagnostic socket
Automatic
transmission
computer
Solenoid valve control
+ battery feed
+ after ignition feed + warning lights display
Intersystem signals + diagnostic
socketIntersystem signal + diagnostic
socket
Driver actions (brake light switch,
gear selector, multifunction
switch)Gear lever lock
AUTO sensors (turbine speed, oil
pressure, oil temperature)Reversing lights
Earth
Wire connection
Multiplex connection
Fault finding - Interpretation of faults23A
23A-16V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
DF003
PRESENT
OR
STOREDANALOGUE SENSOR SUPPLY
1.DEF: Voltage outside permitted range of values
NOTESSpecial notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Customer complaint: deterioration in gear shift strategies.
Deal first with faults: DF005 Oil pressure sensor circuit and DF023 Gearbox oil temperature sensor circuit.
Disconnect the battery.
Check the condition and cleanliness of the modular connector connections.
Disconnect the computer. Check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V of the following
connections:
●connection code 5U, between components 119 and 781,
●connection code 5V, between components 119 and 781,
●connection code 5BC, between components 119 and 754,
●connection code 5BB, between components 119 and 754.
Check the supply of the analogue sensors = 5 V.
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 problem is still present, contact the 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_DF003/DP0TA2005_V18_DF003
MR-372-J84-23A100$348.mif
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-17V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF005
PRESENT
OR
STOREDOIL PRESSURE SENSOR CIRCUIT
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
The fault appears after a timed period of 10 seconds with the engine running
at 2000 rpm.
Special notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Disconnect the battery.
Disconnect the modular connector, and check the cleanliness and condition of the connections.
Disconnect the computer. Check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V of the following
connection:
●connection code 5U, between components 119 and 781.
With the ignition on, check for + 5 V on connection 5U of the oil pressure sensor connector.
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 the wiring.
●connection code 5W, between components 119 and 781,
●connection code 5V, between components 119 and 781.
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.
The voltage on connection 5U of the modular connector must be + 5 V, otherwise check the computer supply.
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 the wiring.
Reconnect the modular connector.
Measure the resistance of component 781 between connections 5V and 5W on the computer connector (female
connector).
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.
Replace the sensor if the resistance is not approximately 20 kΩ.
If the problem is still present, contact the 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_DF005/DP0TA2005_V18_DF005
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-21V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF012
PRESENT
OR
STOREDSOLENOID VALVE SUPPLY
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault appears after running command AC024 Sequential actuator control.
Special notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Disconnect the battery.
Disconnect the modular connector, and check the cleanliness and condition of the connections.
Disconnect the computer. Check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V of the following
connections:
(see System operation and Allocation of computer tracks on the modular connector)
●connection code 5AU, between components 119 and 754,
●connection code 5AV, between components 119 and 754,
●connection code 5AX, between components 119 and 754,
●connection code 5AW, between components 119 and 754,
●connection code 5AY, between components 119 and 754,
●connection code 5DL, between components 119 and 754,
●connection code 5DM, between components 119 and 754,
●connection code 5BA, between components 119 and 754,
●connection code 5AZ, between components 119 and 754,
●connection code 5BX, between components 119 and 754.
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.
With the ignition on, check for + 12 V on connections 5BA and 5AU of component 754.
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 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_DF012/DP0TA2005_V18_DF012
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-22V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF016
PRESENT
OR
STOREDLOCKUP SOLENOID VALVE CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault appears after running command AC024 Sequential actuator control'.
Special notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Disconnect the battery.
Disconnect the modular connector, and check the cleanliness and condition of the connections.
Disconnect the computer. Check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V and the
following connections:
(see System operation and Allocation of computer tracks on the modular connector)
●connection code 5BX, between components 119 and 754.
●connection code 5BA, between components 119 and 754.
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.
Reconnect the modular connector.
Measure the resistance of component 754 between the following connections:
●connection code 5BX,
●connection code 5BA.
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.
Replace the solenoid valve or the electric/hydraulic interface wiring harness if the resistance is not 1 Ω ± 0.12
at 23˚C.
If the problem is still present, contact the 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_DF016/DP0TA2005_V18_DF016
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-23V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF017
PRESENT
OR
STOREDEXCHANGER FLOW RATE SOLENOID VALVE CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
The fault appears after running command AC024 Sequential actuator control.
Special notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Disconnect the battery.
Disconnect the computer. Check the cleanliness and condition of the connections.
Disconnect the modular connector, and check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V and the
following connections:
●connection code 5DN, between components 119 and 1019,
●connection code 5DD, between components 119 and 1019.
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.
Reconnect the modular connector.
Measure the resistance of component 1019 between the following connections:
●connection code 5DN,
●connection code 5DD.
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.
Replace the exchanger flow solenoid valve or the wiring harness if the resistance is not 40 Ω ± 4 at 23˚C.
If the problem is still present, contact the 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_DF017/DP0TA2005_V18_DF017
AUTOMATIC TRANSMISSION
Fault finding - Interpretation of faults
23A
23A-24V5 MR-372-J84-23A100$348.mif
SIEMENS TA2005
Vdiag No.: 14-18
DF023
PRESENT
OR
STOREDGEARBOX OIL TEMPERATURE SENSOR CIRCUIT
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
Special notes:
Use bornier Elé. 1681 for all operations on the computer connectors.
Disconnect the battery.
Disconnect the modular connector, and check the cleanliness and condition of the connections.
Disconnect the computer. Check the cleanliness and condition of the connections.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance to earth, to + 12 V and the
following connections:
●connection code 5BC, between components 119 and 754,
●connection code 5BB, between components 119 and 754.
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.
Reconnect the modular connector.
Measure the resistance of component 754 between the following connections:
●connection code 5BC,
●connection code 5BB.
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.
Replace the sensor or the wiring if the resistance is not between:
2360 Ω and 2660 Ω at 20˚C
290 Ω and 327 Ω at 80˚C
If the problem is still present, contact the 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_DF023/DP0TA2005_V18_DF023