Hey everyone, I'm looking for some help on a TCS issue on my 93 MT. The previous owner removed and sold the TCS module, so I sourced another 91-94 TCS module (P/N 39900-SL0-013) and had just recently plugged it in along with the ABS/ALB module (P/N 39790-SL0-003). The TCS problem indicator light (and only this light) came on shortly after the car starts and stayed lit. After reading the 1991 service manual on TCU troubleshooting and shorting the diagnostic connector, I logged a TCS code 4-9 along with an ECU code 3-6.
The diagnostics for code 4-9, which points to issue with all wheel speed sensors, had me verify the wiring between four pairs of pins (presumably for wheel speed sensors at each wheel) between the TCS 20-pin connector and the ABS 18-pin connector. After doing the continuity check on the four pairs, it turned out two pins on the ABS connector side were reversed from what the manual indicated:
It's unlikely that the wires were reversed from the factory, or that the previous owner re-pinned the ABS connector, so I'm asking help from the community to help me verify the wiring on the 93 TCS 20-pin connector and the ABS 18-pin connectors. It would be great if someone can show the same continuity check diagram with the pin pairs from a 93-specific service manual that so we know if the correct pin wiring. Hope
And yes, I did search, but no one else seemed to have the same reversed wiring problem I'm experiencing:
http://www.nsxprime.com/forum/showthread.php/146027-TCS-ABS-lights-on-together-weird-trouble-code
http://www.nsxprime.com/forum/showthread.php/95384-AntiLock-and-TCS-light-coming-on-why
http://www.nsxprime.com/forum/showt...s-on-stumbling-and-climate-control-won-t-work
Any help is appreciated!
The diagnostics for code 4-9, which points to issue with all wheel speed sensors, had me verify the wiring between four pairs of pins (presumably for wheel speed sensors at each wheel) between the TCS 20-pin connector and the ABS 18-pin connector. After doing the continuity check on the four pairs, it turned out two pins on the ABS connector side were reversed from what the manual indicated:
It's unlikely that the wires were reversed from the factory, or that the previous owner re-pinned the ABS connector, so I'm asking help from the community to help me verify the wiring on the 93 TCS 20-pin connector and the ABS 18-pin connectors. It would be great if someone can show the same continuity check diagram with the pin pairs from a 93-specific service manual that so we know if the correct pin wiring. Hope
And yes, I did search, but no one else seemed to have the same reversed wiring problem I'm experiencing:
http://www.nsxprime.com/forum/showthread.php/146027-TCS-ABS-lights-on-together-weird-trouble-code
http://www.nsxprime.com/forum/showthread.php/95384-AntiLock-and-TCS-light-coming-on-why
http://www.nsxprime.com/forum/showt...s-on-stumbling-and-climate-control-won-t-work
Any help is appreciated!