HKS turbo timer

superwhite · 03-18-2013, 04:30 PM

I installed an HKS type 1 on my 1987 Supra but the rpm indication is reading zero. The pin its connected to at the ECM is black, I checked and there is no voltage. Should there be? Did the installation manuall gude me to the wrong spot? I triple checked and everything is connected per their instructions.

btwilson86 · 03-18-2013, 06:15 PM

I'm not an expert on this, but i assume the timer is looking for a ground from the ignition (like most aftermarket tachometer's). If that's the case, I believe there's an IG- spot next to the diagnostic box under the hood that may work.

cre · 03-19-2013, 01:14 AM

Yup, you want IG- not G-. IG- runs from the igniter to the diagnostic box and to the tachometer.

03-18-2013, 04:30 PM	#1
superwhite Stock Join Date: Nov 2010 Location: LaPorte Posts: 12	HKS turbo timer I installed an HKS type 1 on my 1987 Supra but the rpm indication is reading zero. The pin its connected to at the ECM is black, I checked and there is no voltage. Should there be? Did the installation manuall gude me to the wrong spot? I triple checked and everything is connected per their instructions.

03-18-2013, 06:15 PM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	I'm not an expert on this, but i assume the timer is looking for a ground from the ignition (like most aftermarket tachometer's). If that's the case, I believe there's an IG- spot next to the diagnostic box under the hood that may work. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

03-19-2013, 01:14 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Yup, you want IG- not G-. IG- runs from the igniter to the diagnostic box and to the tachometer. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Greddy Full Auto Turbo Timer w/harness for 86-92 Toyota Supra	robertsws	MKIII Supra	1	04-14-2009 05:43 AM
HELP PLEASE	Nick0887	Non-Generation Specific Questions	4	02-28-2009 07:26 AM
Dream Offer	Karma_Supra	MKIV Supra	22	10-17-2007 03:04 PM
Sequential Turbo Question	suprapoweredsoarer	MKIV Supra	1	06-06-2006 12:13 AM
turbo timer	Guest	MKII Supra	5	04-05-2005 06:02 AM