Knock light
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Joined: Oct 2007
Posts: 169
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From: Calgary AB
Car: 1992 T/A convertible
Engine: LB9 TFS175heads Ebase/accel runners
Transmission: T5 5spd
Axle/Gears: 4.11
Knock light
Hey guy's, ive been trying to get a knock LED setup to work on SAUJPV4 and I'm not having any luck. I've got the LED wired up to F5 on the ECU and i can get the LED to light if i ground pin F5 or when I unplug the Knock sensor but when I get actual knock retard (as seen in Tunerpro RT) the LED will not light up. anyone actually got this to work?. I have tried playing around with the settings in the Prom in regards to steady on/ blink 1 or 3 seconds and nothing seems to work am i missing something?
Joined: Apr 2004
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
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Re: Knock light
Be sure that you only have one function enabled for the light.
A good way to test the function of the light is to enable the "PE" light function. If you get it to light that way it will work when knock is indicated.
Sometimes you do get retard without knock and could be what you are seeing.
Do you get many knock counts but no light?
Recommended settings for Knock light, swap setting b0 & b6 to test with PE activation. Will confirm F5 is working internally to ground.
A good way to test the function of the light is to enable the "PE" light function. If you get it to light that way it will work when knock is indicated.
Sometimes you do get retard without knock and could be what you are seeing.
Do you get many knock counts but no light?
Recommended settings for Knock light, swap setting b0 & b6 to test with PE activation. Will confirm F5 is working internally to ground.
Code:
; b7, 1 = ; b6, 1 = DO PE LIGHT (on F5 pin) Test with this ; b5, 1 = DO MAP AE LIGHT (on F5 pin) ; b4 ,1 = DO TPS AE LIGHT (on F5 pin) ; ; b3, 1 = LED/Light ON for 1 second when engine knock present ; 0 = LED/Light ON for 3 seconds when engine knock present ; ; b2, 1 = LED/Light Blink when engine knock is present ; 0 = LED/Light Full ON when engine knock is present ; ; b1, 1 = enable LED/Light when knock sensor failure ; (LED/Light is FULL ON if knock sesnor is failing) ; 0 = DO NOT turn on LED/Light when knock sensor fails ; ; b0, 1 = enable LED/Light when engine knock present ; 0 = DO NOT turn on LED/Light when engine knock is present ;--------------------------------------------------------------- ; SELECT ONLY ONE "LIGHT CONTROL BIT" ; b0, b6, b5, b4 IS THE PRIORITY, First one set, wins! ;---------------------------------------------------------------
Thread Starter
Member
Joined: Oct 2007
Posts: 169
Likes: 12
From: Calgary AB
Car: 1992 T/A convertible
Engine: LB9 TFS175heads Ebase/accel runners
Transmission: T5 5spd
Axle/Gears: 4.11
Re: Knock light
Yeah i did read in the instructions about only setting one bit and thats how i set it up, I was thinking about trying the PE thing, I will give it a go tommorow and see what happens. In the datalog I am seeing knock counts and retard but the light wont light. It does glow dimly all the time, But i understand that is normal? I am curious, Under what conditions do you get retard without knock? thx
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