petebee
Member
- Joined
- Sep 13, 2012
- Location
- Back in NC again...
I am trying to diagnose a stalling/poor running condition on my 91 245. I would like to test the ECT by measuring voltage and continuity at the LH ECU, but I am struggling to figure out how to probe the terminals. Below is a snippet that I copied from Brickboard:
"With the control unit connected, connect a voltmeter across LH ECU terminals 13 and 5 (ground) for Bosch LH 2.4 systems or terminals 2 and 5 (ground) for LH 2.2 systems. This unit is in the passenger side footwell, under the plastic cover. Remove the cover of the large electrical connector to access the backs of the pins for the test. Turn the ignition switch ON."
- with the control unit connect: I assume this means with the large connector plug remains connected to the ECU, correct?
- remove the cover of the large electrical connector to access the backs of pins: do I somehow remove the white plastic cover on the connector? It doesn't appear to have a method other that prying the thing off...doesn't seem right to me
- turn the ignition switch ON: key position with accessories on (warning lights on dash illuminated), but car not actually running, correct?
Thanks!
"With the control unit connected, connect a voltmeter across LH ECU terminals 13 and 5 (ground) for Bosch LH 2.4 systems or terminals 2 and 5 (ground) for LH 2.2 systems. This unit is in the passenger side footwell, under the plastic cover. Remove the cover of the large electrical connector to access the backs of the pins for the test. Turn the ignition switch ON."
- with the control unit connect: I assume this means with the large connector plug remains connected to the ECU, correct?
- remove the cover of the large electrical connector to access the backs of pins: do I somehow remove the white plastic cover on the connector? It doesn't appear to have a method other that prying the thing off...doesn't seem right to me
- turn the ignition switch ON: key position with accessories on (warning lights on dash illuminated), but car not actually running, correct?
Thanks!