B1710

No Engine Speed Signal

Fault Symptom
- TCS OFF lamp lit, Traction Control System (TCS) system not functioning

Conditions
- No engine speed signal and the car is travelling at over 60 km/h.

Action
- Check the lead between the MOTRONIC control module and the TCS control module:
1 If the tachometer is working, conduct continuity test on the lead between speedometer pin 2 and TCS control module pin 6 for breaks.
2 If the tachometer Is not working, conduct a continuity test between pin 43 on the MOTRONIC control module via pin 2 on the speedometer to pin 6 on the TCS control module for breaks, shorts and bypasses.
3 Erase the diagnostic trouble code, test-drive the car and see if the diagnostic trouble code is reregistered.
- If the trouble code is registered, proceed to Control Module, Procedure Prior To Replacement.
- If the diagnostic trouble code is not registered, the action taken was correct or the fault was of the intermittent type.