5000CD Quattro Wagon (Canada) L5-2226cc 2.22L SOHC Turbo (MC) (1986)
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Using jumper cable, briefly connect terminals 2 and 3 of open throttle body switch connector
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LED of US 1115 must go ON for approx. two seconds
If LED DOES NOT go ON
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Replace temperature switch
If LED goes ON
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Remove jumper cable from terminals 2 and 3 of connector
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Unplug connector from thermo-switch (arrow)
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Using jumper cable, connect terminal R of temperature sensor connector to ground
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Using jumper cable, bridge terminals 2 and 3 of throttle body switch connector
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Specification: LED light must NOT go ON, or flash
If this specification is NOT met
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Check wiring between control unit and thermoswitch according to current flow diagram and repair as necessary