SAAB WIS ONLINE

LED

LED

Fault symptom

LED does not light

Action


1. Check to see if the LED works

Connect the scan tool. Select "ACTIVATE". Select "LED" Select "ON". The LED should light.

If the LED lights, the fault is intermittent. Proceed to point 6. If the LED does not light, proceed to point 2.

2. Check if the LED is working (contd.)

Disconnect the LED. Connect the test lamp in the 2 pin LED connector. Repeat the scan tool command as point 1. The test lamp should light.

If the test lamp lights, change the LED. If the test lamp does not light, proceed to point 3.

3. Check the voltage supply to the LED

Unplug connector H33-1. Connect the test lamp between connector H33-1, pin 29 and a safe grounding point. Repeat the scan tool command as point 1. The test lamp should light.

If the test lamp does not light, proceed to point 5. If the test lamp lights, proceed to point 4.

4. Check the LED cable assembly

Conduct a continuity test on the cable assembly between

• connector H33-1, pin 29 and the 2 pin LED connector, pin 2.

• the LED 2 pin connector, pin 1 and grounding point G34S.

The resistance should be < 1 Ohm.

If the resistance is incorrect, take action on the cable assembly. If the resistance is correct, proceed to point 6.

5. Check the cable assembly to the control module

Conduct a continuity test on the cable assembly between connector H33-1, pin 29 and the control module, pin 2.

The resistance should be < 1 Ohm.

If the resistance is incorrect, take action on the fault in the cable assembly.

If the resistance is correct, proceed to point 6.

6. Final test

Check to see if the fault symptom remains.

If the problem remains, proceed to .