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Hi Thomas,
We are probably more miles apart on understanding each others' skills at making electrical measurements than we are physically, but yet I will submit, based on your insistence on using the Bentley's AMM resistance checks in an earlier attempt to judge your AMM, you are taking this recipe thing they offer way too strictly:
1. The AMM resistance checks are garbage. Like the reports on aftermarket rebuilt AMMs, the value of these tests has been reported as useless many times here on this list and others for good, sound reasons. There is no way for you to verify you have a good AMM using a voltmeter or ohmmeter.
2. Distinguishing among tenth-ohm resistances is difficult with lab equipment using spring-tensioned silver contact probes in humidity controlled environments, and basically impractical using an electrician's tool. You won't find a corroded terminal with an ohmmeter. The recipe tests are there to find unplugged connectors or broken wires.
4. "Battery voltage" includes a tolerance permitting all those readings given voltage drop of various loads, including the loads represented by the components being measured.
The procurement of a spare AMM is another suggestion Bentley makes no note of, but is good advice repeated ad nauseum by experienced Volvo owners. It is the only way to rule it out. "Buy one before you need to, so you can get a good price and test it." Yes, I know, too late for you -- but if you can't locate one in a yard, on line, or find another owner to let you borrow one, a genuine Bosch rebuild is the price you need to pay.
When you make electrical measurements, consider tolerance. Just because the meter has a digital readout, does not bestow your measurements with that last-digit accuracy. Check it against a standard, or a couple of other meters. It isn't built for rocket surgery.
When you read Bentley, remember you are reading selected words written for the dealer techs by Volvo's tech writers, preparing them for models not even on the floor yet. Not experience.
And, what happened to 3?
:)
--
Art Benstein near Baltimore
I had no Monet to buy Degas to make the Van Gogh.
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