2000 Volvo C70 HT 2.3 TDC

Post by **abscate** » 29 Oct 2019, 05:01

The wiring diagram will have a complete index and listing / location of all the components by number

Post by **subzerocarfanatic** » 29 Oct 2019, 08:52

Good morning to you! From what i can see so far i have pulled most of the plastic pieces that snaps together that goes around all the wires off, and all the wires from injectors go towards the harness going towards the ECU i guess it is,it's on the passenger side fender area in front corner,anyway they seem to be going there and not up to the main fuse harness, I pulled the fuse box cover off the one in hood cowl panel area driver side and pulled the red 103 relay,is there a way i can jumper it to test if needed? I am still tracing wires like you suggested. I replaced all the B+ wires with new wire , from battery to fuse box, batt. to starter, and batt. to alternator. I also removed all the blue ground wires cleaned connected ground eyelets and body of car where they mount, I soldered all ends and cleaned with CRC Q electrical cleaner. have a good day! Soon as i find the culprit i will report my findings, i tried posting pictures yesterday but had no luck, sorry.

Post by **erikv11** » 29 Oct 2019, 11:13

How to jumper test the 103 relay: viewtopic.php?t=18663

Post by **subzerocarfanatic** » 30 Oct 2019, 10:59

abscate wrote: 29 Oct 2019, 05:01 The wiring diagram will have a complete index and listing / location of all the components by number

Maybe i just need to learn how to use the manual, I purchased the eManual online that I downloaded in PDF form I believe, I find the page where it shows all the different sections of repairs etc but how do i get to each individual page to view the helpful info is the problem I have. Hopefully I will figure it out,i'm not good with electronic style files and manuals etc where you have to zip or unzip something in order to use it etc, etc.

Post by **subzerocarfanatic** » 31 Oct 2019, 13:48

I ordered a multi meter wire testing kit so i was waiting for it to arrive, got it late yesterday, has back probes,alligator clips etc, anyway I am still trying to find where my current loss is, my green wire at each injector plug is reading 88 Ma on all 5 injector plugs and same at the MAF sensor green/ orange stripe wire, just thought i would post that,not sure what that means if anything. I am downloading the emanual online for my 2000 C70 HT as we speak that i purchased for $25, hope it's a useful tool.

Post by **subzerocarfanatic** » 31 Oct 2019, 16:24

Think my post went in the wrong section,still learning, sorry. Just wanted you to know i'm still searching for my current loss, I tested the injector plugs, they all show 88 Mv on the green wire and so does the green with orange stripe wire going to MAF plug harness.I have a question, i have a lot of things unplugged, could that have a negative effect on any voltage readings i'm doing? I have my MAF I just ordered and have not installed yet so it's not on vehicle and the ETM built by Xemodex it is not plugged in or installed yet and the MAP sensor and the other one that connects by it on the charge line or whatever it;s called ( the one that connects to the ETM on bottom). Just remembered, the 3 sensors unplugged are the IAT and the MAP and the CTS .

Post by **abscate** » 31 Oct 2019, 19:05

Get your VOM on 12 Volts DC scale, you want to measure voltages, not current.

Post by **subzerocarfanatic** » 31 Oct 2019, 19:37

i have most of the wiring harness covers, the plastic that snaps together to encapsulate all the main wires, it goes from fuse box, to smaller fuse box down to starter, alternator etc then i assume to ECU. All the wires coming from injectors and MAF all go towards ECU, so far i don't see anything from injectors or MAF going towards fuse boxes, they all go in the main harness in from fuse box, in front of engine and towards what i assume is ECU, not sure how to pull apart wires going to ECU or if i should attempt it. So having several things unhooked or unplugged does not matter i assume. Thanks again for your input, you have been the most helpful person on the forum and i'm appreciative.