TCS/ABS Trouble shooting issues - Need Help

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jamesmost
Posts: 1963
Joined: Tue Jul 08, 2003 10:16 am
Car: "95Qmodded, Benz wagon 4matic , 1986 MB 560sec

Post

was threw a code a # of months back for secondary throttle position sensor. That went away and was replaced by Righr Rear Wheel Sensor.Replaced both wheel sensors, then threw code for Left Rear wheel sensor.I Seperated my Left Rear sensor from old harness to combine w/ New Right Rear.Before i could do this went back to throwing code for Right Rear Sensor.Then this morning threw the code for secondary throttle position sensor.

HHHHHHHEEEEEEELLLLLLLLLPPPPPPPPP MMMEEEEEEE

WTF???
Modified by jamesmost at 9:48 AM 10/12/2006


Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

Clean contacts on TCS/ABS ecu, if that doesn't stop it replace unit.......gives you time to find a spare from junkyard.

Just another of those modules you keep a spare for diagnosis.

jamesmost
Posts: 1963
Joined: Tue Jul 08, 2003 10:16 am
Car: "95Qmodded, Benz wagon 4matic , 1986 MB 560sec

Post

BTY how does that plug come out of the ECU Just the 2 screws ??do i need to disconnect the battery first ??

jamesmost
Posts: 1963
Joined: Tue Jul 08, 2003 10:16 am
Car: "95Qmodded, Benz wagon 4matic , 1986 MB 560sec

Post

Q45tech wrote:Clean contacts on TCS/ABS ecu, if that doesn't stop it replace unit.......gives you time to find a spare from junkyard.

Just another of those modules you keep a spare for diagnosis.
ok cleaned contacts applied dilectric grease, still No good

BTY car does not do self check when initially back up any more. Also tcs will engage around 3000 rpm while power brakeing, but i can hang a turn punch it and fish tail w/ tires spinning and it will not engage.Have a used ecu on the way,
Modified by jamesmost at 5:21 PM 10/13/2006


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