Page 95 of 128

AUTOMATIC TRANSMISSION
Fault finding – Interpretation of statuses23A
23A-95V4 MR-372-J84-23A050$594.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
ET127
LOWER SEQUENTIAL LEVER SWITCH
NOTESThere must be no present or stored faults.
This indicates the status of the lower sequential lever switch.
This status displays ACTIVE with the gear lever in position M-.
This status displays INACTIVE with the gear lever in a position other than M-.
Check the sequential lever supply on the following connections:
●Check for + 12 V on connection AP43 of component 129.
●Check for the vehicle earth on connection N of component 129.
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.
With the gear lever in position M, measure the voltage of the following connections:
●Check for the vehicle earth on connection 5H of component 129.
●Check for the vehicle earth on connection 5FM of component 129.
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 any of the measured values is + 12 V, replace the sequential lever
If the values are 0 V, check that the selector lever positions match those displayed on the instrument panel.
Repair if necessary.
If the correct status is not displayed, use the interpretation of fault DF093 Manual sequential controls circuits.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2000_V10_ET128
Page 96 of 128

AUTOMATIC TRANSMISSION
Fault finding – Interpretation of statuses23A
23A-96V4 MR-372-J84-23A050$594.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
ET128
UPPER SEQUENTIAL LEVER SWITCH
NOTESThere must be no present or stored faults.
This indicates the status of the lower sequential lever switch.
This status displays ACTIVE with the gear lever in position M+.
This status displays INACTIVE with the gear lever in a position other than M+.
Check the sequential lever supply on the following connections:
●Check for + 12 V on connection AP43 of component 129.
●Check for the vehicle earth on connection N of component 129.
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.
With the gear lever in position M, measure the voltage of the following connections:
●Check for the vehicle earth on connection 5H of component 129.
●Check for the vehicle earth on connection 5FM of component 129.
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 any of the measured values is + 12 V, replace the sequential lever
If the values are 0 V, check that the selector lever positions match those displayed on the instrument panel.
If the correct status is not displayed, use the interpretation of fault DF093 Manual sequential controls circuits.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2000_V10_ET128/DP0TA2000_V11_ET128/DP0TA2000_V15_ET128
Page 103 of 128

AUTOMATIC TRANSMISSION
Fault finding – Parameter interpretation23A
23A - 103V4 MR-372-J84-23A050$726.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
PR003
CONTINUED
See the Taking line pressure section of the Workshop Repair Manual.
Set up the pressure gauge for a line pressure reading.
With a warm engine and the gearbox oil temperature between 60 and 80 ˚C, check the difference between the line
pressure sensor (PR003) and the pressure gauge under the following conditions:
–with the engine stopped, the pressure gauge should indicate a residual pressure of about 0.2 bar.
If the sensor reading differs by more than 0.2 bar, replace the sensor.
–with the engine running at about 1200 rpm the pressure gauge reading should reach 7 bar.
If the sensor reading differs by more than 0.8 bar, replace the sensor.
Warm engine with gearbox oil temperature between 60 and 80 ˚C.
Take the line pressure readings under the following conditions:
–with the gear lever in P or N and engine speed at 2000 rpm the pressure should be between 2.6 and 3.2 bar.
–with the gear lever at R and engine speed at 2000 rpm, the pressure should be above 4 bar.
–with the gear lever at D and engine speed at 2000 rpm, the pressure in first gear should be greater than 7 bar.
If the values are not correct, there is a fault inside the gearbox.
AFTER REPAIRRepeat the conformity check from the start.
Page 107 of 128

AUTOMATIC TRANSMISSION
Fault finding – Parameter interpretation23A
23A - 107V4 MR-372-J84-23A050$726.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
PR128
ENGINE/TURBINE SPEED DIFFERENCE
NOTESThere must be no present or stored faults.
Check gearbox oil grade and level.
If an oil change or top-up is necessary see the Draining-Filling-Levels section of the Workshop Repair Manual.
Check that the gearbox is not leaking oil.
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.
Use the Universal bornier Elé. 1681 to check the insulation, continuity and the absence of interference
resistance on the following connections:
●Connection code 5DA between components 119 and 1017.
●Connection code 5DB between components 119 and 1017.
●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 it.
Measure the resistance of component 1017 between the following connections:
●Connection code 5DA.
●Connection code 5DB.
The value should be approximately 300 Ω ± 40 Ω at a temperature of approximately 20 ˚C.
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 resistance is not correct, either the sensor or the harness is damaged. Replace the faulty component.
Measure the resistance of component 754 between the following connections:
●Connection code 5BX.
●Connection code 5BA.
The value should be approximately 1 Ω ± 0.2 Ω at 20 ˚C.
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 value is not correct, the solenoid valve or the electric/hydraulic interface harness is damaged.
AFTER REPAIRRepeat the conformity check from the start.
DP0TA2000_V10_PR128/DP0TA2000_V11_PR128 /DP0TA2000_V15_PR128
Page 108 of 128

AUTOMATIC TRANSMISSION
Fault finding – Parameter interpretation23A
23A - 108V4 MR-372-J84-23A050$726.mif
SIEMENS TA2000
Vdiag No.: 10-11-15
PR128
CONTINUED
Carry out a converter stall test.
Follow the procedure in the Converter stall test section of the Workshop Repair Manual.
See the Taking line pressure section of the Workshop Repair Manual.
Set up the pressure gauge for a line pressure reading.
Warm engine with gearbox oil temperature between 60 and 80 ˚C.
Take the line pressure readings under the following conditions:
–with the gear lever in P or N and engine speed at 2000 rpm the pressure should be between 2.6 and 3.2 bar.
–with the gear lever at R and engine speed at 2000 rpm, the pressure should be above 4 bar.
–with the gear lever in D and engine speed at 2000 rpm, the pressure in first gear should be greater than 7 bar.
If the values are not correct, there is a fault inside the gearbox.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.