Adusting the deflection lever and joint rod

Note

The headlight motor must be in the "pop-up headlights raised" position. Move motor electrically in this position. Tighten the deflection lever to the motor in such a manner that it forms a straight line with the joint rod and is in the position just ahead of the top dead center. Tightening torque: 10 Nm (7 ftlb)

828-94

Note

The pop-up headlight motors rotate in different directions:

- The left-hand motor rotates clockwise

- The left-hand motor rotates counterclockwise

Adjustment of end stop and rotary support

Note

To prevent the headlights from vibrating, the rotary support must be preloaded slightly when it is up against the end stop.

1. Raise headlights.

2. Remove cap at pop-up headlight.

3. Mark motor position on knurled wheel.

4. Turn back 2 turns at the knurled wheel.

5. Adjust stop so that the rotary support is up against the stop without play as well as without preload.

829-94A

Note

If the adjustment range of the end stop is not sufficient, adjust at the joint rod.

Adjusting the cover ring

To adjust the cover ring with reference to the fender aperture, raise the pop-up headlights. Adjust the cover ring so that it is centered with regard to the fender aperture.

Checking headlight beam adjuster

1. Switch on headlights.

2. Unlatch headlights and turn into fitting position.

3. Disconnect both connectors from actuators.

4. Measure voltage between term. No. 1 (positive) and term. No. 3 (negative).

Display: Battery voltage

1397 - 94

If no voltage is present at the terminals, check power supply according to wiring diagram.

5. Voltmeter to term. 1 (positive) and term. 2 (negative).

Display:

Potentiometer in position 0: approx. 0 V Potentiometer in position 1: 2.5 V to 3.0 V Potentiometer in position 2: 4.2 V to 5.0 V

If the values are not reached, check directly at the connector to the potentiometer.

u

uu^uU ------—

IU

0 CZD

ll

□ 0 D 0 □ I

1398- 94

1398- 94

Note

The battery voltage must be between 11 V and 13 V when the check is made. If the voltage reading is lower, recharge battery.

Adjustment of headlights fitted with headlight beam adjuster

Note

Basic headlight adjustment is carried out in position 0.

1. Switch on headlights.

2. Adjust headlights with the vehicle in road-worthy condition using a headlight aimer.

Fuel tank full.

Driver's seat loaded with one person or 75 kgs.

The tire pressure must meet the specifications.

Potentiometer position of headlight adjuster relative to load state

Position 0:

1 or 2 persons without luggage. Position 1 :

3 or 4 persons without/with luggage. Position 2:

1 or 2 persons with luggage.

968 CS

Position 0:

1 or 2 persons without luggage. Position 1 :

2 persons with luggage. Position 2:

1 person with luggage.

Lowering in position 0: 10 cm on 10 m

Lowering in position 1 : 15 cm +1 cm on 10 m

Checking headlight beam adjuster

Printed in Germany - VIII, 1993

Diagnosis / troubleshooting alarm system

The alarm control unit is diagnosable. It can be read out only with System Tester 9288.

The menu includes the following functional groups:

- Fault memory

- Drive links

- Input signals

- Country codes

- Results

- System check Note

For some of the faults, two types of causes must be distinguished:

- The fault displayed is an actual fault that has to be remedied.

- The fault displayed is a fault condition that has been caused deliberately, e.g. by leaving the open glove compartment open.

Troubleshooting requires that the person performing the tests

- is familiar with the location of components, function and technical relationship of the systems being tested

(refer to Model Information)

- is able to read and evaluate Porsche wiring diagrams

- knows the functions of circuits and relays

- is capable of using testers and of evaluating the test results.

Tools required for troubleshooting: Special Tool 9540

Note

The Special Tool is required because connector II is fitted with miniature terminals. To avoid damaging the terminals, always use the Special Tool for the tests. When checking for continuity, attach connector to wiring harness only. When checking signals and voltages, attach connector to wiring harness and control unit.

D90-1

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