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1988 ECU Diagnosis 200

uid 27's pic
posted by  Art Benstein on  Sun Jul 8 05:38 CST 2012
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

Sometimes visual inspection doesn't serve to verify electrical connections.

For your 88 (or any LH-jet 240 83-93*) you can verify the red lead FI circuit, whether it is fused under the hood or in the panel, by taking the AMM connector and slipping its boot back. Probe the orange lead. With the key on (KP-II), this orange lead will only have battery voltage on it if the fuse and red lead are in good shape. The load of the AMM and FI circuitry ensures this.





*I've heard rumor this lead is red/black on late production '93 harnesses...
--
Art Benstein near Baltimore

"I don't think you can get cold in Volvo 240 series. The AC can't do it and the heater won't let you." -darkdelta





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