Tachometer and Speedometer aren't working .
- Thread starter eK_Sedan
- Start date
RonJ
Banned
Yes, key off.I re did the test and I didn't get a reading at the ECU connector or the Distributor connector .. these test should be ran with the car off, correct ?
What was the meter dialed to read and at what scale?
RonJ
Banned
If you did the test on the distributor connector rather than the wire harness side connector, then the distributor is bad. Replace it.
You can also verify that the two TDC sensor wires are good by connecting the Red and Grn wires in the distributor connector (wire harness side) and then redoing the C20-C21 test at the ECU connector.
You can also verify that the two TDC sensor wires are good by connecting the Red and Grn wires in the distributor connector (wire harness side) and then redoing the C20-C21 test at the ECU connector.
RonJ
Banned
Look carefully at the second diagram in post #13.I was doing the test on the wire harness side .. I didn't know I could actually test the distributor plug . I was sticking the probes into the green and red wires terminals on the engine bay harness.
To test the distributor sensor, you must do the test on the distributor plug at terminals 3 and 7 (equivalent to the red and green wires on the wire harness side). Redo the test on the distributor connector.
RonJ
Banned
The 3-7 test is for the TDC sensor not the ICM. The TDC sensor and the ICM are separate unrelated components. Assuming that you tested the correct terminals in the distributor plug, the distributor body is bad.I've tested the 3 & 7 male terminals on the distributor plug, and I didn't get a reading.. is the distributor as a whole bad or just the ICM ? I have an extra ICM from a distributor that was on a z6 from my old del sol I could use, if that's even possible ?
Do you get readings for 2-6 and 4-8 in the distributor plug?
RonJ
Banned
Hmmm...I suspect a problem with your tests because the 2-6 and 4-8 pins are for the other two distributor sensors, which are NOT throwing a code. You should read 350-700 Ohms for the latter tests.I just tested the ones you mentioned and I didn't get a reading at either one .
Post pictures of the distributor connector pins that you are testing.
eK_Sedan
New Member
You should read 350-700 Ohms for the latter tests
... Yeah, there was . I had the Multimeter set at 200 Ohms .. When you said the 350-700 range I turned the dial to 2000 Ohms .
Results
2-6 : 365
3-7 : 367
4-8 : 367
RonJ
Banned
Now test for a short:C20-c21 : 364
Using the 200 Ohm scale, measure resistance between pin C20 and body ground (metal frame under the dash).
Do the same test for C21.
What are the Ohm readings?
RonJ
Banned
Install a new fuse. Make sure it doesn't blow again and then do the test I mentioned.Pulled the hood back up/radio fuse and found out the fuse has popped.
RonJ
Banned
Fuse not blown, engine running, but no CEL code thrown?Still no readings ...