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        Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

        CONDITION: The vehicle’s compressor clutch will not engage and/or the condenser fan motor will not turn off. Historically, a failed temperature switch will result in this scenario.

        Failed Switch Confirmation:

        • With the A/C system on, provide a ground signal to the lead wire of the water temperature switch, the compressor clutch should engage.
        • Using a multimeter, check the switch for continuity between the housing and the water temperature switch terminal at room temperature. If the switch is open, it has failed and must be replaced.

        CAUSE: The A/C water temperature switch may have been damaged, causing the circuit to open.

        CORRECTION: When installing A/C water temperature switch, tighten and torque* the switch using only hand tools with a deep socket. Do not over torque the switch assembly during installation. Do not use air tools because the high-speed ratcheting motion can damage the switch. Be careful not to drop or strike the switch during the installation process. Do not use sealing tape.

        *Torque: 120 kg•cm (8.6 lbf•ft)

        Product Group
        Electrical Switches & Relays
        Water Temperature Switch