E36 (March of 1998) NEW to INPA and need HELP with P0500 diagnosis

[wormtownhero]

Hello,

I am new to coding though I have a 1998 323ic and a 2011 328ix. I have a fresh Windows 7 x64 with INPA/NCS Expert installed and a new eBay K+DCAN cable. I can connect, though choosing the correct engine of the three M52 options will give me intermittent errors, but I am able to capture this error which I am trying to diagnose. My other scanners can only tell me P0500 Vehicle Speed Sensor A (which means nothing) and Road Speed Signal D6 (also worthless to me). I've replaced both left side wheel sensors (both miserable jobs taking hours to drill out frozen sensors. Anyway, here's my error and any help would be greatly appreciated.

214 Signal Geschwindigkeit
Error frequency : 1 Logistic counter: 40
Motordrehzahl 2816.00 1/min Last 354.06 mg/Hub digitaler F-Code 1 3.00 [1] Batteriespannung 13.87 V aufgetreten vor (rel. BZ) 15.10 h
Signal nicht plausibel CARB-Fehler Fehler nach Entprellung gespeichert Fehler momentan vorhanden statischer Fehler
Errorcode: D6 78 01 28 58 41 03 88 8E B0

I think the last line above is where the standard OBDII code is coming from, but it doesn't tell me which wheel sensor is bad, or if the entire ABS module is bad. I have no ABS dash lights. I do have the setup for DSC+T from the factory, but, it doesn't work. The button on my center console does nothing. My speedo, odometer and cruise control all work. My fuel efficiency meter does not (well, it tries to when I start from a stop but only a slight movement).

Thank You all!

[328 Power 04]

Does the signal from the differential speed sensor make it to the dme?

[wormtownhero]

@Abel - Thanks for the reply. I presume so since it's my understanding that the speedo gets it's signal from the diff sensor. Unless I am mistaken? Quick test to confirm would be to disconnect wire and see if speedo still works.

[328 Power 04]

Wiring diagram says that vehicle speed on 328is comes from right rear sensor.

Differential sensor works if your speedo is working, yes.

[wormtownhero]

Wiring diagram says that vehicle speed on 328is comes from right rear sensor.

When I get a chance I'll try to swap left (new) and right, though, if the left one is any indication of what to expect on the right, I'm in for a battle. Wish me luck.

Thank you for the reply!

[wormtownhero]

When I get a chance I'll try to swap left (new) and right, though, if the left one is any indication of what to expect on the right, I'm in for a battle. Wish me luck.

Thank you for the reply!

Right rear wheel speed sensor has been replaced. Thus far only the passenger/right front is original.

So, I was also replacing my dash cluster bulbs and found that both the ABS and DSC bulbs were burnt out so I replaced them and now I see the lamps are now lit. I reset my DTC codes and I will see if the P0500 comes back. Did a quick test of my brakes and I skidded under hard braking so ABS is not working at all. Also, immediately after my hard stop, the tranny slammed into gear. Might need a fluid service?

Thanks again for all who have replied. Any new suggestions, please let me know!

[wormtownhero]

Right rear wheel speed sensor has been replaced. Thus far only the passenger/right front is original.

So, I was also replacing my dash cluster bulbs and found that both the ABS and DSC bulbs were burnt out so I replaced them and now I see the lamps are now lit. I reset my DTC codes and I will see if the P0500 comes back. Did a quick test of my brakes and I skidded under hard braking so ABS is not working at all. Also, immediately after my hard stop, the tranny slammed into gear. Might need a fluid service?

Thanks again for all who have replied. Any new suggestions, please let me know!

UPDATE: I was continuing my research and found publication (E36_ACS+T) Group 34 - 34 01 93 (2136) dated September 1993 with a subject of Automatic Stability Control with Traction Control System (ASC+T) - E36 System

What I read on Page 2 was, "The control module averages the speeds of the two front wheels to determine vehicle speed." Furthermore, I am reading on Page 14, "Both the ABS and ASC warning lamps illuminate when the ignition is switched on. The lamps go out after approximately 2 seconds (self test check). The ASC lamp will flash during regulation. (As it does in my E90 ) The ASC lamp will be on permanently with a faulted system or if the ASC is manually switched off. The ABS and ASC lamps will be on permanently with faults that affect the ABS system (both systems off line)."

So, I'm down to three possible issues 1) ABS Module is toast, 2) Right front wheel sensor is bad or 3) I have a wiring issue somewhere in the system. Or possibly a combination of one or more of these. I'm learning how to use my multimeter and when the weather warms up (In Massachusetts), I'll test for power at the connector and try to confirm if the right front wheel sensor is producing a measurable signal when the wheel spins.

INPA and/or my cable still cannot communicate with that module. I am able to use INPA to get engine errors (DME MS 41.1 - 5WK9 0355 Index 09)

In this publication it notes the "T" actually stands for "Teves Mark IV ABS System"

Any additional thoughts? Thanks!

[328 Power 04]

That ABS/ASC+T requires an ADS interface on a true serial port to be able to reach it. It is an "L-line" module, and not a K-line. K-DCAN cable will not be able to communicate with it.