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900 wiring for radiator fan 900 1995

posted by  Volvodad on  Sun Jun 5 15:40 CST 2005
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last visit: Thu Oct 23 16:18 CST 2014
[RELATED]

I copied the below from the FAQ's section on "Engine and OBD Diagnostic Codes".

You can scroll and read the whole section, but following the instructions below will test your fan hookup and lots of other things. I tried this on my '94, and it made the fan run briefly on low, then high speeds. Comforting to know the fan relay responds properly to ECU signals.


"4. Diagnostic Test Mode 3: Injection System Component Activation Test
Turn the ignition ON to KPII and install the cable into socket 2 for fuel-injection-related tests.
Press the button three times for one second each time (waiting between >1 and <3 seconds before pressing again)
The diagnostic unit then tests selected components: engine coolant fan (if equipped), fuel injectors, idle air control solenoid valve, carbon filter solenoid valve (if equipped), cold start valve, radio suppression relay and fuel pump, each of which you can hear or feel.
Exit by switching off the ignition."
--
Bob (son's 81-244GL B21F/M46, dtr's 83-244DL B23F/M46, 94-944 B230FD; grocery-getter Dodge minivan, hobbycar 77 MGB, and a few old motorcycles)






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