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Old 05-29-2003, 03:32 AM
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sixto sixto is online now
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Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,119
Klima relay pin outs (87 SDL or any late 126)

Does anyone know what the pin outs are for a Klima relay for an 87 300SDL? The markings on the pin face go...

GK- GK+ 87 15 TD 31

The manual says there are connection for...

engine rpm
AC compressor power
compressor speed input 1
compressor speed input 2
ACC push button unit input
coolant temp input
WOT switch input
kick down switch input (86 SDL only)

I'd like to run some diagnostics because my compressor works fine when I start the car but at some seemingly random point it cuts out and won't come back on until the engine's been off for a few hours. Low and high side pressures check out when it's running. I can tear open the harness sheathing but it'll be more elegant to tap into the pins.

91 300SE
87 300SDL
83 300SD
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