Here is the latest....Using the onboard diagnostics I unpluged the RPM sensor and cranked the engine. It told me there was no RPM signal. I plugged it back in and it tested good. I checked the Radio suppresion relay and the coil is good, energized and I have 12 volts on both sides of the contact. Don Wilson's FAQ on basic operation of EZ117K led me to the ICU. I unplugged it and reseated the connector. Is there some way to test the ICU? Also, the next possible failure is called the power stage ignition amplifier. Where is this and how can I test it to see if that is the no spark cause. The ICU is ~ $150.00 and would like to know before I replace it if this is the problem. There is also lots of bad ECU info on the FAQ. Is this a possibility also? I have tried to purchase the Volvo service manual on the ignition but the Volvo web site says they are out of stock. Thanks for the help.

David