Know what these GPR voltages mean?

[BigRedWeather]

I would swear I had already posted this... but I can't find it now. I 'll try again

The four wires going to the GPR all go into the wiring harness about 4 inches from the GPR. They all look good up to that point.

Whenever I turn the key on, whether engine is hot or cold the WTS light comes on for 1-2 seconds.

LEGEND
Four posts on GPR
sL small left
sR small right
BB Big, connected to Battery
B, the other big post
G battery negative post
G-sR means volt meter test leads on G and sR
CLICK- click heard right around the GPR about 30 seconds after the key is turned on

ENGINE COLD (OUTSIDE TEMP 70 F) KEY TURNED ON, BEFORE CLICK
G-sR 12v
G-sL 0.5
sR-sL 10.8
G-B 12

ENGINE COLD KEY TURNED ON, AFTER CLICK******
sL-sR 0
G-B 0
BB-B 0.6
G-sL 12
G-sR 12

ENGINE HAS RUN FOR 40 SECONDS, ENGINE TURNED OFF, KEY ON AFTER CLICK
sL-G 12
sR-G 12
G-B 0
sL-sR 0

ENGINE RUN FOR 30 ON HIGHWAY, ENGINE TURNED OFF, KEY ON BEFORE CLICK (I DON'T RECALL IT I EVER HEARD A CLICK
sL-sR 6v

 

[u2slow]

The 10.8V suggests to me that the glowplugs are on at that point. The high current draw (load of the GPs) causes the voltage to dip below 12v.

 

[OLDBULL8]

http://www.oilburners.net/forums/showthread.php?t=30790

How about there. Looks like you received a lot of answers.

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