Volkswagen Workshop Service and Repair Manuals

• Automatic gearbox control unit -J217-
• ◆ Location
• ◆ Removing => Page 01-26
• ◆ Installing => Page 01-27
• ◆ Checked by self-diagnosis => Carrying out self-diagnosis, Page 01-29
• Engine control unit
• ◆ Location and removing and installing =>Fig. 1
• ◆ Location => Fig. 1

If engine or gearbox control units are replaced, the system must be brought to basic setting => page 01-54 , Initiating basic setting.

• Diagnostic connection
• ◆ Location => Fig. 2

• Valve chest
• ◆ Location => Fig. 3
• ◆ The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94- are attached to the valve body
• ◆ The valves are checked by self-diagnosis
• Conductor strip with integrated gearbox oil temperature sender (ATF) -G93-
• ◆ Location => Fig. 4
• ◆ Removing and installing =>Fig. 5
• ◆ -G93- is checked by self-diagnosis
• Multifunction switch -F125-
• ◆ Location and removing and installing =>Fig. 6
• ◆ -F125- is checked by self-diagnosis
• Gearbox speed sender -G38-
• ◆ Location and removing and installing =>Fig. 14
• ◆ -G38- is checked by self-diagnosis

• Road speed sender -G68-
• ◆ Location and removing and installing =>Fig. 15
• ◆ -G68- is checked by self-diagnosis
• Throttle valve potentiometer -G69-
• ◆ The signal of throttle valve potentiometer is checked by self-diagnosis.
• ◆ Location, further information on potentiometer and removing and installing => Fig. 8
• Solenoid for selector lever lock -N110-
• ◆ Location and removing and installing =>Fig. 11
• ◆ The solenoid is checked by self-diagnosis
• ◆ Can be checked in measured value block => page 01-80
• Selector lever position display -Y5-
• ◆ Location => Fig.7

• Cruise control switch -E45-
• ◆ Location and removing and installing =>Fig. 10
• ◆ Can be checked by reading measured value block
  => Page 01-56
• Kickdown switch -F8-
• ◆ Location, further information on kick-down switch and removing and installing => Fig. 9
• ◆ Can be checked electrically => page 01-56
• Brake light switch -F-
• ◆ Location and removing and installing =>Fig. 12
• ◆ Can be checked electrically => page 01-56
• Relay for starter lock-out and reversing light -J226-
• ◆ Location => Fig.13

→ Fig.1     Engine control unit

Location: The control unit is located in plenum chamber.

Removing and installing control unit

=> Repair group 24 or 25

→ Fig.2     Diagnosis connections

Location: The diagnosis connection -arrow- is located behind the cover above the ashtray.

→ Fig.3     Valve body

Location: The valve body is located above oil pan.

The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94- are attached to the valve body.

Removing and installing valve body

=> Repair group 38; Removing and installing valve chest

in booklet:

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

→ Fig. 4     Conductor strip with integrated gearbox oil temperature sender (ATF) -G93-

Location: The conductor strip is located in the oil pan on the valve chest.

→ Fig.5     Removing and installing conductor strip

The conductor strip can be changed with gearbox installed without removing the valve body.

Do not kink or damage the conductor strip.

Removing and installing conductor strip

• ‒ Separate connector at gearbox and remove retaining clamp, drain ATF remove oil pan then remove cable guide.
• ‒ Lever conductor strip off solenoid valve in direction of arrow with special tool 3373.

If the locating points are damaged the valve body must be exchanged.

Installation is performed in the reverse order.

Do not kink or damage the conductor strip.

Removing and installing valve body

=> Repair group 38; Removing and installing valve chest

in booklet:

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

→ Fig.6     Multi-function switch -F125-

Location: The multi-function switch is located on rear of gearbox.

Removing and installing multi-function switch

• ‒ Switch off ignition, open bonnet.
• ‒ Pull connector off multi-function switch.
• ‒ Remove bolt and retainer.
• ‒ Remove multi-function switch.
• ‒ Renew seal.

Installation is performed in the reverse order.

• ‒ Tighten bolt to10 Nm .

→ Fig.7     Selector lever position display -Y5-

Location: Selector lever position display (arrow) is located in combi-instrument.

Removing and installing selector lever position display.

=> Repair group 90; Removing and installing dash panel insert

→ Fig.8     Throttle valve potentiometer -G69-

Locations:

On a petrol engine the potentiometer is a component part of the throttle valve control part -J338-. It can be found on the throttle valve housing (engine).

On a Diesel engine the "Throttle valve signal" is generated in the sender for accelerator pedal position -G79-. The sender can be found near the accelerator pedal.

For self-diagnosis:

The throttle valve potentiometer is one of the engine control unit sensors. However the gearbox control unit also requires the throttle valve potentiometer signal.

For this reason the signal from the engine control unit is transmitted to the automatic gearbox control unit.

On vehicles with Data bus the automatic gearbox control unit receives the throttle valve potentiometer signal from the Data bus.

On vehicles without Data bus the signal is made available via a wire from the engine control unit.

The self-diagnosis of the automatic gearbox only checks the signal, not the potentiometer! On vehicles without Data bus the wire for the signal is also checked.

The signal can only be read-out in measured value block.

=> Read measured value block ; Display group number 001 and 003

It is therefore imperative that the self-diagnosis of the engine control unit is also carried out when the self-diagnosis indicates that the throttle valve potentiometer is faulty.

Checking and adjusting or removing and installing throttle valve potentiometer

Petrol engine

=> Repair group 24; depending on engine code

Diesel engine

=> Repair group 20

→ Fig.9     Kickdown switch -F8-

Locations:

The kickdown switch (arrow) is integrated into accelerator cable and is located on bulkhead in engine compartment.

On vehicles which do not have an accelerator cable the kick-down signal is generated in the sender for accelerator pedal position -G79-. The sender can be found close to the accelerator pedal.

For self-diagnosis:

On these vehicles the kick-down switch signal is transmitted from the engine control unit to the automatic gearbox control unit.

On vehicles with Data bus the automatic gearbox control unit receives the kick-down signal from the Data bus.

On vehicles without Data bus the signal is received via a wire from the engine control unit.

Removing and installing kickdown switch

Petrol engine

• ‒ On a petrol engine the accelerator cable must be removed to be able to remove and install the kick-down switch, then readjust cable.
  => Repair group 20; Adjusting accelerator cable
  Diesel engine
  =>Repair group 20

=> Repair group 20; Adjusting accelerator cable

Diesel engine

=> Repair group 20

→ Fig.10     Cruise control system switch -E45-

Location: Cruise control switch is located on steering column switch.

Removing and installing cruise control switch

=> Servicing steering column switch; Repair group 94

→ Fig.11     Selector lever lock solenoid -N110-

Location: The selector lever lock solenoid -arrow- is located in the selector lever housing.

Removing and installing selector lever lock solenoid

=> Repair group 37; Servicing selector lever mechanism

in booklet:

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

→ Fig.12     Brake light switch -F-

Location: Brake light switch (arrow) is located on pedal cluster.

Removing and installing brake light switch

=> Repair group 47; Assembly overview: Pedal cluster, brake pedal

→ Fig.13     Relay for starter inhibitor and reversing light -J226-

Location: Relay located on additional relay carrier under dash panel, left.

Relay is marked with number "150" (arrow).

→ Fig.14     Gearbox speed sender -G38-

Location: The gearbox speed sender -arrow- is located on top of gearbox.

Removing and installing gearbox speed sender

• ‒ Switch off ignition, open bonnet.
• ‒ Pull connector off sender.
• ‒ Remove bolt and pull sender out.
• ‒ Renew seal.

Installation is performed in the reverse order.

• ‒ Tighten bolt to 10 Nm.

→ Fig.15     Road speed sender -G68-

Location: The road speed sender -arrow- is located on top of gearbox.

When the gearbox is installed the sender is covered by the left assembly mounting.

Removing and installing road speed sender

Additional information

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

Special tools, testers and auxiliary items

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

=> Repair group 37; Removing and installing gearbox

• ‒ Obtain radio code on vehicles with coded radio.
• ‒ With the ignition switched off disconnect the battery earth strap and remove battery.
• ‒ Remove air cleaner.

• ‒ → Fit support bar 10-222 A with legs 10-222 A/1 (6-cyl. engine adapter 10-222 A/3) and support engine/gearbox in this position.

• ‒ Remove bracket for power assisted steering pressure hose.

• ‒ → Do not remove the bolts for the gearbox carrier -arrows- until the gearbox has been supported.

• ‒ → Remove pendulum support -arrows-.

• ‒ → Lower gearbox approx. 60 mm -a-.
• ‒ Pull black connector off sender.
• ‒ Remove bolt and pull sender -1- out.
• ‒ Renew seal.

Installation is performed in the reverse order.

• ‒ Tighten bolt to 10 Nm.

Tightening torques

=> Repair group 37; Removing and installing gearbox

in booklet:

• ◆ Workshop Manual Golf 1998 ▸, Automatic gearbox 01M

Location of control unit for automatic gearbox -J217-

→ The control unit -arrow- is located in plenum chamber centre/right.

Removing control unit

• ‒ Switch off ignition, open bonnet.
• ‒ Remove wiper arms and cowl panel:

=> Electrical system; Repair group 94; Windscreen wiper system; Removing and installing windscreen wiper system

• ‒ → Release multi-pin connector, then pull connector off control unit.

• ‒ → Remove screws -arrows-.
• ‒ Remove control unit.

Installing control unit

Installation is performed in the reverse order.

• ‒ → Locate multi-pin connector on control unit -J217- pins (arrows) then lock multi-pin connector.
• ‒ Performing self-diagnosis => Page 01-28 .
• ‒ Initiating basic setting => Page 01-54 .