Clutch troubleshooting manual (online)
 

Since this is a very relevant issue to me lately, here is a good online FSM trouble shooting manual: http://www.cygnusx1.net/supra/library/TSRX/c/CL_01.html

this is for a supra, but the troubleshooting guide is relevant regardless of vehicle. in fact, it is nearly identical to my 98 4runner FSM trouble shooting guide

good info