If the fuse is fine and no code is thrown, then do nothing with respect to code 8, unless code 8 is thrown again.Car is running as we speak . No CEL has been thrown . I let it warm up to normal operating temp, I'm about to turn the car off and check the fuse .
Ground the C8 cluster connector terminal to the metal frame under the dash and then test for continuity to body ground (metal frame under dash) at ECU connector terminal A19.No readings at A19 and I haven't had a reading at C8 since I started the test .
Redo the C20-C21 resistance and short tests. If no problems are found, then the ECU is likely bad.8 : Top Dead Center Sensor
Check whether the connector is plugged into the IACV. If so, clean the IACV.14 : Idle Air Control Valve
Test the Blu/Wht VSS wire for continuity between the VSS and ECU connectors.17 : VSS Speed Sensor
Redo the C20-C21 resistance and short tests. If no problems are found, then the ECU is likely bad.
Check whether the connector is plugged into the IACV. If so, clean the IACV.
Test the Blu/Wht VSS wire for continuity between the VSS and ECU connectors.
Borrow an ECU for testing or source a replacement.When I checked resistance between the RED and GRN wires at the ECU I was getting the same readings as yesterday (364) .. then I tried the short test, body to ground I got nothing.
Got my hands on and obd2 scanner .
P1359 CKP/TDC CONNECTOR DISCONNECTED
That's the only code I'm getting no 17 or 14
For some reason, you won't do the VSS circuit test I suggested. If code 17 returns, you need to do the test.Checked to see if VSS plug was still getting power, BLU/WHT wire went up a bit from yesterday (4.64) BLK/WHT (11.62). Checked the VSS Wire connected to the ECU on plug C. I got (2.0)
No. One meter probe touches the wire terminal to be tested and one meter probe touches body ground.When I do the short test do I have to ground the opposite end of wire that I'm testing ?
Where did I recommend this^ test? Please read my posts carefully.I thought I did the VSS test to the ECU correctly . I tested the BLU/WHT wire on the C connector at the ECU 200 ohm, grounded black probe to body and got 2.0 ohms. That's with the gauge cluster & VSS plugged in , should I unplug the cluster and re-test ?
Do you have any specific questions? I mentioned the specific test that should be done.And the blue tach wire diagram looks scary . Lol . But I will tackle it in the morning ..
Good. No broken wire and proper resistance.When I did the resistance test at C20-C21 I got a reading.
Good. Also no short.But when I did the short test I didn't get a reading
...but your test above failed to reveal a short... I went back a few post and read your post (#29) and you said It could possible be short to ground
You seem to want to avoid the conclusion drawn from your own test results. Source a replacement ECU and go from there. You may find that the intermittent code 17 and the tach issue are also caused by a bad ECU., could that be it instead of the ECU ? Because my car starts up and idles fine . Check engine light still on . Same code
No reading indicates an open not a short. Redo the test to verify and also do the same test for ECU A19 and the Blu/Wht wire in the VSS connector, the latter of which you would ground.Also .. I skipped a test . I never grounded the C8 wire while I tested the A19 pin, well I did today . I didn't get a reading.. possible short ?
Why are you still testing this^ wire?I redid the tests same results . No readings. I grounded the BLU/WHT wire like you said .
^RonJ;3376225. said:Redo the test to verify and also do the same test for ECU A19 and the Blu/Wht wire in the VSS connector, the latter of which you would ground.
the Tach still doesn't work though.
Great. Good progress.Swapped ECU . Check engine flashes as normal, I let the car warm up to normal operating temp. Went for a drive car drove better than it did before, more responsive.. No check engine lights
I can only help with alarm issues if you know how it's wired. Or is it a stock alarm system?When I turn my lights on the alarm goes go off . Very faint but I can still hear it . I'm going to have a Radio shop look at it . For now I unplugged it.