SEAT Workshop Service and Repair Manuals

Electrical/electronic components and their location

1 -	Automatic gearbox control unit -J217-

q	Location → Fig.

q	Separate → Fig.

q	Fit → Fig.

q	Checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

2 -	Engine control unit

q	Location → Fig.

q	Separate and fit → Rep. Gr.24

q	If the control unit is replaced, the system has to be put in basic setting → VAS 5051; Vehicle self-diagnosis

3 -	Connection for diagnosis

q	Location → Fig.

4 -

Slide box

q	Location → Fig.

q	The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94- are fitted to the slide box

q	The valves are checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

5 -	Conducting plate with incorporated gearbox oil temperature sender -G93-

q	Location → Fig.

q	Separating and fitting → Fig.

q	The oil temperature sender -G93- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

6 -	Multi-function switch -F125-

q	Location → Fig.

q	Separate and fit → Fig.

q	The multi-function switch -F125- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

7 -	Gearbox rev. speed sender -G38-

q	Location → Fig.

q	Separate and fit → Fig.

q	The sender -G38- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

8 -	Road speed sender -G68-

q	Location → Fig.

q	Separate and fit → Fig.

q	The sender -G68- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

9 -	Throttle valve potentiometer -G69-

q	The throttle valve potentiometer signal is checked by self-diagnosis

q	Location and additional information on the potentiometer and its removal and fitting → Fig.

q	The throttle valve potentiometer -G69- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

10 -	Electromagnet for gear lever locking -N110-

q	Location → Fig.

q	Separate and fit → Chapter

q	The electromagnet for gear lever locking -N110- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

11 -	Gear lever range display -Y5-

q	Location → Fig.

12 -	Kick-down switch -F8-

q	Location and additional information on the kick-down switch and its separation and fitting → Fig.

q	The multi-function switch -F8- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

13 -	Brake light switch

q	Location → Fig.

q	Separate and fit → Fig.

q	The electromagnet for gear lever locking -N110- is checked by self-diagnosis → VAS 5051; Vehicle self-diagnosis

14 -	Relay for starter blocking and reversal light -J226-

q	Location → Fig.

Engine control unit Location: the control unit is in the plenum chamber.

Connection for self-diagnosis Location: the diagnosis connection is located behind the tray on the driver side, on top of the fuse holder.

Slide box Location: the slide box is underneath the oil sump. The solenoid valves -N88-, -N89-, -N90-, -N91-, -N92-, -N93- and -N94- are fitted to the slide box.

Conducting plate with incorporated gearbox oil temperature sender -G93- Location: the conducting plate is on the slide box.

Separating and fitting the conducting plate The conducting plate can be replaced with the gearbox installed, without removing the slide box. Do not bend or damage the conducting plate.

Separating and fitting the conducting plate –  Disconnect the gearbox input cable connector and unbolt the securing clips; bleed the ATF and remove the oil sump. Then unbolt the cable bushing. –  Remove the conducting plate from the solenoid valves by levering towards the arrow using tool -T20032-. If the housing is broken, the slide box must be changed → Chapter. The fitting is done in reverse order, but note the following: Do not bend or damage the conducting plate.

Multi-function switch -F125- Location: the multi-function switch is found at the rear of the gearbox. Separating and fitting the switch –  Switch off ignition and open the bonnet. –  Uncouple the multi-function connector. –  Remove the bolt and the support. –  Remove the multi-function switch. –  Replace the O ring. The fitting is done in reverse order, but note the following: Tightening torque: 10 Nm

Gear lever range display -Y5- Location: the gear lever range display is on the dash panel. Separating and fitting the gear lever range indicator: → Electric system; Rep. Gr.90

Throttle valve potentiometer -G69- Location: The potentiometer forms part of the throttle valve control unit -J338-. It is located on the entry to the throttle valve control unit (engine). For self-diagnosis: The throttle valve potentiometer is a sensor in the engine control unit. The gearbox control unit, however, requires the potentiometer signal. The automatic gearbox control unit receives the throttle valve potentiometer signal via the BUS data cable. During self-diagnosis, the automatic gearbox only checks the signal, not the potentiometer. During self-diagnosis, whenever the throttle valve potentiometer is indicated as faulty, the engine control unit must also be self-diagnosed → VAS 5051; Vehicle self-diagnosis. Check and adjust the throttle valve potentiometer, or separate and fit: → Rep. Group 24; Components and functions.

Kick-down switch Location: the kick-down switch -arrow- is incorporated in the accelerator cable and is located in front of the bulkhead wall, in the engine bay. On vehicles without an accelerator cable, the kick-down signal is produced in the accelerator position sender -G79-. This sender is next to the accelerator. For self-diagnosis: On vehicles with a sender, the kick-down switch signal is transmitted by the engine control unit via the “BUS cable to the gearbox control unit”. Separating and fitting the kick-down switch To separate and fit the kick-down switch, the accelerator cable should be separated and fitted, and then adjusted.

Electromagnet for gear lever locking -N110- Location: the gear lever locking electromagnet -arrow- is in the gearbox. Separating and fitting the electromagnet for gear lever locking → Chapter.

Brake light switch -F- Location: the brake light switch -arrow- is on the pedals. Separating and fitting the brake light switch: → Brake system; Rep. Gr.46

Gearbox rev. speed sender -G38- Location: the gearbox rev. speed sender -arrow- is on the upper part of the gearbox. Separating and fitting the gearbox speed sender –  Disconnect the white sender connector. –  Remove the bolt and remove the sender. –  Replace the O ring. The fitting is done in reverse order, but note the following: Tightening torque: 10 Nm

Relay for starter blocking and reversing light -J226- Location: the relay is on the additional relay plate underneath the dash panel on the driver side. The relay is coded with the number “175”-arrow-.

Road speed sender -G68- Location: the road speed sender -arrow- is on the upper part of the gearbox. Separating and fitting the road speed sender –  Remove air filter. –  Separate the black sender connector -arrow-. –  Replace the O ring. The fitting is done in reverse order, but note the following: Tightening torque: 10 Nm

Location of the automatic gearbox control unit -J217- The control unit -arrow- is in the central/right-hand part of the plenum chamber.

Separating the automatic gearbox control unit -J217- –  Remove wiper arms and cowl panel: → Electric system; Rep. Gr.92 –  Loosen the bolts -1- securing the support, separate the wiring housed in the flanges and move the control unit in the direction of the arrow. –  Release the multiple connector and then disconnect it from the control unit. –  Separate the control unit.

Fitting the control unit -J217- –  Fit the multiple connector to the pins in the control unit -J217- and then block the connector. –  Position the control unit on the support. –  Fit the cowl panel and the windscreen arms: → Electric system; Rep. Gr.92 –  Perform selfdiagnosis and introduce basic setting: → VAS 5051; Vehicle self-diagnosis.