2005 CITROEN C6 automatic transmission

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CLUTCH
GEARBOX
TRANSMISSION
AM6 GEARBOX CONTROLS: «SHIFT LOCK» FUNCTIONIMPERATIVE: Respect the safety and cleanliness requirements, with reference to the brochure:
«Recommendations-Precautions».
The «shift lock»is a system that locks the gear selection lever in position «P».
Unlocking the «SHIFT LOCK»(normal operation).
Switch on the ignition.
Press the brake pedal and keep it pressed.
Move the gear selection lever out of position «P».
Unlocking the «SHIFT LOCK» (with an operating fault).
Should it be impossible to unlock the «shift lock»with the «Normal operation»method.
The fault may originate from one of the following components:
- «Shift lock».
- Gear lever position switch.
- Automatic gearbox ECU.
- Electrical harness.
- Battery voltage.
Operations to be performed.
Unclip the cover (1).
Unlock the «shift lock»by pressing at "a"with the aid of a screwdriver (screwdriver with a minimum length of
150 mm).
Move the gear selection lever out of position "P".
C5FP0RCD
Engines: ES9A - DT17BTED4
C5FP0RBC
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GEARBOX
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PROCEDURE FOR INITIALISATION OF THE AUTOMATIC GEARBOX ECU
NOTE:For all these operations, follow the procedure in the diagnostic tool.
Replacement of the automatic gearbox without replacement of the ECU.
Carry out the following operations:
- Initialisation of the neutral position of the gear selection lever position sensor.
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
- Initialisation of the autoadaptatives.
- Resetting the oil usage counter to zero.
Replacement of the automatic gearbox ECU.
Carry out the following operations:
- Read the value of the gearbox oil usage counter from the old ECU.
- Write the value of the oil usage counter into the new ECU.
- Initialisation of the neutral position of the gear selection lever position sensor.
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
- Initialisation of the autoadaptatives.
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GEARBOX
TRANSMISSION
PROCEDURE FOR INITIALISATION OF THE AUTOMATIC GEARBOX ECU
Replacement of the automatic gearbox and of the automatic gearbox ECU.
Carry out the following operations:
- Initialisation of the autoadaptatives.
- Resetting the oil usage counter to zero.
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
Draining of the automatic gearbox oil.
Carry out the following operations:
- Initialisation of the adaptation of the oil pressure regulators and electrovalves.
- Resetting the oil usage counter to zero.
NOTE:If downloading the automatic gearbox ECU, there is no specific operation, follow the procedure in the diagnostic tool.
IMPERATIVE: For a certain time, having carried out an ECU initialisation procedure, one may obtain gear changing quality that is more
or less good (adaptation of the ECU parameters to the gearbox). To improve the quality, it is necessary to perform a road test with
frequent changing through the gears (auto-adaptive laws).
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DRAINING, FILLING AND TOPPING UP THE AM6 AUTOMATIC GEARBOX
Tool.
[1] Filling cylinder: (-).0340
Respect the safety and cleanliness requirements.
Draining.
IMPERATIVE: Draining of the gearbox must be done with the oil hot (60°C minimum), in order to
ensure that the impurities in suspension in the oil are eliminated.
NOTE:Drainage is only partial, as the torque converter cannot be drained totally.
Raise the vehicle.
Remove:
- The oil level plug (2)by means of the Torx spanner.
- The drain plug (1)using a hexagonalspanner.
NOTE :Around 3 litresof oil should flow out.
Filling.
Fit the drain plug (1)(with a new seal).
Tighten the plug (1)to: 5 ± 1 mdaN.
Remove:
- The air filter housing.
- The oil filler plug (3).
Use tool [1].
B2CP3WZCB1BP317C
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DRAINING, FILLING AND TOPPING UP THE AM6 AUTOMATIC GEARBOX
WARNING: Do not take account of the information mentioned on tool [1].
Oil capacity for a dry gearbox: 7 litres (approx.).
Type of oil: JWS 3309 ESSO(red in colour).
Volume of oil remaining after draining: 4 litres (approx.).
Quantity of oil to be added: 3 litres (approx.).
Refit the filler plug (3)(with a new seal).
Tighten the plug (3)to: 4 ± 1 mdaN.
Initialise the oil usage counter (follow the procedure in the diagnostic tool).
Checking the oil level.
Prior conditions:
- Vehicle in a horizontal position.
- Check that the gearbox is not in back-up mode.
Remove the filler plug (3).
Add 0.5 litreof extra oil into the gearbox.
Press the brake, change through all the gears.
Gear lever in position "P".
Engine running, at idle:
- Oil temperature 60°C (+ 8 ; - 2)(parameter measures with a diagnostic tool).
- Remove the level plug (2).
B2CP3WZCB1BP317C
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DRAINING, FILLING AND TOPPING UP THE AM6 AUTOMATIC GEARBOX
Thread of oil, then "drip-drip".
Refit the level plug (2).
Tighten the plug (2)to: 0.8 ± 0,1 mdaN.
"drip-drip" or nothing.
Refit the level plug (2).
Stop the engine.
Add 0.5 litreof extra oil into the gearbox.
Repeat the topping-up procedure.
NOTE:The level is correct when the thread of oil becomes "drip-drip".
Refit the level plug (2)(with a new seal).
Tighten the plug (2)to: 0.8 ± 0,1 mdaN.
Refit the filler plug (3)(with a new seal).
Tighten the plug (3)to: 4 ± 1 mdaN.
A level of oil that is too high can have the following consequences: Abnormal overheating of the oil, leaks of oil
causing a level which is too low resulting in destruction of the gearbox.
B2CP3WZCB1BP317C
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CHECKING THE OIL PRESSURE IN THE AM6 AUTOMATIC GEARBOX
Tools.
[1]Flexible pipe and pressure gauge: 4601- TF1 Toolkit 4601-T
[2]Flexible union: (-).0336.X Toolkit 8010-T
IMPERATIVE: Respect the safety and cleanliness requirements.
Preliminary operations.
Remove the air filter housing.
Move aside the pipe (1).
Remove the screw (2).
Screw in the tool [2]in place of the screw (2).
B2CP45GCB2CP45FC
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CHECKING THE OIL PRESSURE IN THE AM6 AUTOMATIC GEARBOX
WARNING: Clean the flexible pipe of the tool [1] each time before use; the different
automatic gearbox oils cannot be intermixed.
Fit the tool [1]on the tool [2].
Perform the following operations:
- Raise the vehicle, wheels hanging.
- Apply the parking brake.
- Start the engine.
- Check the oil pressure.
WARNING: Wait for the gearbox oil to reach a temperature between 58°C and 68°C.
Check the level of oil in the gearbox (see corresponding operation).
NOTE:Check the temperature of the oil using the diagnostic tool in parameter measures.
Gear lever position: D.
Engine speed: Idling.
Principal oil pressure: 3.7 to 4.2 bars.
B1BP3END
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