You will need an OBDII code reader, or if it will drive, take it to autozone or another parts place that will read your trouble codes for you. Here is a link to your factory service manual; it has all the trouble shooting proceedures you will need.

2000 tacoma service manual


John Luttrell
2001 4x4 short cab, 3 inch lift with 33 inch mudders and Powertrax no-slip in the rear


1991 Jeep YJ, 4 inch suspension lift on 33" BFG's