00 disco

tracing the wires back from the MAF it seems to go under the throttle body across to the passenger side... but im having trouble from there.

im getting MAF code but swaping mafs doesnt solve the problem. grove tech told me the wiring might be the culprit... are there any common ground, burn through or pinch points for the wiring? id also like to check the other side, i assume it plugs into the ECM somewhere, anyone have info on that?

also, using a voltmeter, any way I can test each wire in the harness that plugs into the maf to say check the resistance etc.?

 

what codes are you getting?

 

po102 low voltage

 

You need to check voltage at connector . You also need a wiring diagram and check for a good ground .

 

there are a bunch of wires (4-6 if i remember?) in the harness, can you tell me which wire I need to test, and what voltage I should be reading?

 

Do you need the torque value's for that wire harness? (sorry, I couldn't resist LOL)

 

you are getting an 0102 with both MAF's? do you have the RAVE? i forget what page the MAF is on 207 209 something like that in 99-02 electrical diagram section.

 

yea i have rave, i looked at the diagrams quickly but i didnt see on directly for that particular harness... ill check when i get home.

3 mafs actually, 1 from a confirmed working/running disco without codes. they all report lower airflow then they should is what i got from the explination... but yes, they all reported the same incorrect data, so the problem has to lie in the wiring to the ECU i assume. there were codes for the crank po sensor and all the o2s, which were actually all a crush in the wiring by a metal clip that was removed, retaped, and it solved those codes.

 

If the code is for "Low Voltage" it indicates the ECM is getting a lower voltage return from the sensor than it expects - an open circuit.

 

ha, i even torqued my hose clamps on my bmw motorcycle... someone took the time to figure out what they should be, so i sure as hell am going to use them haha in that case actually a few inchpounds too little or too much from book value and there was an intake leak on the bike varified by ether sprayed at the clamp!

yep... lol...hence im asking to see how i can test the harness and the wires running back to the unknown to see which or how many are pinched somewhere... or maybe lose at the connection to the ECU if anyone can tell me which to check