Speed, lead from ABS
| Speed, lead from ABS |
The ABS control module sends a speed signal to pin 68 on the EDC 15 control module. The signal is a square wave that alternates between 0v and B+ 29 times per wheel revolution. The signal is used to:
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determine the gear currently engaged. This ensures the engine receives the correct amount of fuel in different gear positions when the accelerator pedal is released.
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provide an impulse for cruise control.
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| Diagnostics |
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If there is no speed signal, diagnostic trouble code P0502 will be generated.
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If the speed signal exceeds 220 km/h, diagnostic trouble code P0500 will be generated.
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The speed (bus from MIU) is used as a substitute value.
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System reaction to a fault
Cruise control is blocked.This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.
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