Jands SafeGuard Installatiehandleiding - Pagina 5

Blader online of download pdf Installatiehandleiding voor {categorie_naam} Jands SafeGuard. Jands SafeGuard 7 pagina's.

J&S Electronics

13925 Parkway Dr. Garden Grove, CA

(714) 534-6975 www.jandssafeguard.com

10) Start the car. The Status LED should blink during cranking. If it doesn't blink, the unit is not receiving or processing

triggers. If the car runs normally, skip to step 13. If the engine doesn't start, leave the key on, and use a voltmeter to make

sure that 12 volts is getting to the connector on the Black and Red wires. Make sure there is at least 8 volts during cranking.

11) After verifying power and ground, turn off the key, and unplug the unit from the harness. Form a paper clip to fit in the

harness connector to jumper the Green and White wires. Make another starting attempt. Do not touch the paper clip while

the engine is running. High voltages are present from the ignition coil. If the engine still doesn't start, you will need to check

the connections on the Green and White wires at the coil.

12) Once the car runs with the paper clip installed, you must still verify that Green goes to the trigger source. Note that if

Green and White were reversed, the engine would still run with the jumper installed.

13) Once you have the car running normally on the J&S unit, you are ready to test the knock sensor. The unit will not detect

knock unless the following conditions are met:

1) RPM must be above 1250 RPM

2) Vacuum drops below five inches (S8 up) or fifteen inches (S8 down). Note that RX7 version is FI only.

14) Temporarily unplug the vacuum/boost line from the back of the unit. This forces the on board MAP sensor to 0 psi. Plug

the hosse to prevent vacuum leak. Temporarily set mode switches 1 and 2 both up. This will make it easier to tell if the unit

retards during the verification test.

15) Set the sensitivity control to mid-range, and hold the RPM to at least 1500. The unit is prohibited from retarding if the

RPM is less than 1250 RPM. You should be able to hear the engine slow down as you tap rapidly on the knock sensor with a

screwdriver. You can also see the timing retard with your timing light, and the Monitor LED on the front panel will glow dimly,

increasing in brightness with increasing knock retard. If you have the J&S Knock/Retard Bargraph display, you can also see

the amount of retard.

16) Once you have verified that the unit will retard, set mode select switch #2 down. This returns the unit to the individual

cylinder retard mode. Switch 1 up sets the maximum knock retard range to 20°. Leave up unless you KNOW you will not

need more than 10° knock retard.

17) Sensitivity Adjust: Now you are ready for your test drive. A common mistake is to set the sensitivity control to

maximum. This will usually cause the unit to over-retard due to engine noise. Note that the unit can be fooled by false knock

on decel or light engine loads, so adjust the sensitivity under moderate load, such as accelerating from 60 to 80 on the

highway. Set the control for no retard indication while cruising.

92843