RE: Need Help With AutoTap OBD II Scanner
Also check that the brake lights work. That will check the fuse in the engine compartment fuse box to make sure it is good. That is fuse number 25 a 50 amp fuse. Remember to also make sure the grounds on pin 4 and 5 of the DLC are good too. Pin 4 goes through C201 which is the largest connector going through the firewall on the driver's side to ground #103 located in the engine compartment near the fuse box. Pin 5 is grounded through a splice to #G300 which is located behind the driver's kickpanel near the bottom. The autotap would use pin 16 which is connected to a 10 amp fuse marked #38 as said before. Wire color is Light Green with a Red stripe. It could use either ground pin(s) 4 (Black Wire) or 5, (Black Wire with a Light Blue Stripe). It could also use all four wires. Pin 16 is power, pin 4 is power ground, pin 13 is the PCM connection and pin 5 is called (in the EVTM) the PCM ground. So, make sure you have B+ (battery voltage) between pins 16 and 4 and 16 and 5. Don't place a VOM between pin 13 and 5, you may damage the PCM.
As you are facing the connector, pin 1 is on the top left. Pin 9 is on the bottom left. Just count across. There should be no connections in pins 1,3,6,8,9,11,12,14,and 15. They all should be completly empty.
