Ls2 Obd2 Dlc Plug
08-22-2008, 03:06 PM
#1
Teching In
Thread Starter
Join Date: Aug 2008
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Ls2 Obd2 Dlc Plug basically i'm doing an LS2 into a buddy's s14 and in order to lock out the VATS and tune it to street rod mode i need to hook up the obd2 DLC.
it's a 3 plug ecm. black and grey go to the engine harness and all the sensors. and the C1 BLUE plug is wired into the appropriate power supplies and what not from the 240sx's dash plug, and i've already wired up the electric throttle pedal to the C1 as well
this LS2 motorset is t56, ls2, engine harness and ecu /w pedal and c1 plug. there's no bcm or tcm or abs computer or any other modules other than the engine's computer.
on the C1 blue plug i see pin 1 and 2 are serial databus + and -
and i see that after they pass information from module to module they end up going to the OBD2 DLC. pin 1 from C1 (serial databus + circuit 2500) goes to pin 6 obd2 , and pin 2 from C1 (serial databus - circuit 2501) goes to pin 14 on the obd2
as for the rest of the obd2 plug, pin 16 gets battery 12v, pin 4 & 5 get ground.
is that it? will i be able to hook up a scanner/computer and monitor/tune it with just this? i believe the tuner has a tech 2 but i'm not 100% sure.
i don't have peace about it because the schematic for the datalines says what i've said above, but the pinout for the DLC says pin 14 and 6 are unused. so i'm not sure what to do.
thx for the help and sorry if this isn't in the correct section
Dave
__________________
1978 280z + RB25DET = 441rwhp381rwtq@22psi GT30/76R 11.92@125mph 2.1 60' street tires/no lsd
1972 Datsun 510 4 door IRS KA24DE (ka-t soon)
www.myspace.com/z_u_l8r
it's a 3 plug ecm. black and grey go to the engine harness and all the sensors. and the C1 BLUE plug is wired into the appropriate power supplies and what not from the 240sx's dash plug, and i've already wired up the electric throttle pedal to the C1 as well
this LS2 motorset is t56, ls2, engine harness and ecu /w pedal and c1 plug. there's no bcm or tcm or abs computer or any other modules other than the engine's computer.
on the C1 blue plug i see pin 1 and 2 are serial databus + and -
and i see that after they pass information from module to module they end up going to the OBD2 DLC. pin 1 from C1 (serial databus + circuit 2500) goes to pin 6 obd2 , and pin 2 from C1 (serial databus - circuit 2501) goes to pin 14 on the obd2
as for the rest of the obd2 plug, pin 16 gets battery 12v, pin 4 & 5 get ground.
is that it? will i be able to hook up a scanner/computer and monitor/tune it with just this? i believe the tuner has a tech 2 but i'm not 100% sure.
i don't have peace about it because the schematic for the datalines says what i've said above, but the pinout for the DLC says pin 14 and 6 are unused. so i'm not sure what to do.
thx for the help and sorry if this isn't in the correct section
Dave
__________________
1978 280z + RB25DET = 441rwhp381rwtq@22psi GT30/76R 11.92@125mph 2.1 60' street tires/no lsd
1972 Datsun 510 4 door IRS KA24DE (ka-t soon)
www.myspace.com/z_u_l8r
08-22-2008, 04:49 PM
#2
Teching In
Thread Starter
Join Date: Aug 2008
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
well, i made a jumper harness for the dash plug (power & ground supply) and hooked up a generic obd2 scanner to the obd2 plug, and i can monitor everything on the datastream/osciloscope so i guess it's good to go.
i just wanted to be 100% sure of myself. so i have confirmed the obd2 - ls2 pinout to c1 blue
C1 PIN ---------- OBD2 PIN
PIN 1 DATABUS SERIAL + ------- PIN 6
PIN 2 DATABUS SERIAL - ------- PIN 14
BATTERY VOLTAGE ------------ PIN 16
GROUND ---------------------- PIN 4 AND PIN 5
thx =]
Dave
p.s. could a mod move this to the correct section, thx
i just wanted to be 100% sure of myself. so i have confirmed the obd2 - ls2 pinout to c1 blue
C1 PIN ---------- OBD2 PIN
PIN 1 DATABUS SERIAL + ------- PIN 6
PIN 2 DATABUS SERIAL - ------- PIN 14
BATTERY VOLTAGE ------------ PIN 16
GROUND ---------------------- PIN 4 AND PIN 5
thx =]
Dave
p.s. could a mod move this to the correct section, thx
