Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installing & Using Automatic Temperature Control Tester J-22368
When in AUTOMATIC position, this tester may be used to perform Comfortron system checks without disturbing normal car operation. Tester allows operator to hold a predetermined blower speed and temperature when tester is set to MANUAL control. The tester can also be used to measure external system voltages by using the probe. Install tester as follows:
- Remove 4-terminal male connector from amplifier on Comfortron control head, plug this connector into 4-terminal female connector with Green wire on Tester Adapter Harness J-23124.
- Plug the remaining 4-terminal male connector on Tester into amplifier on control head, then plug Adapter harness into Tester harness. Attach Black ground lead to any good ground point available on car.
- Remove glove box interior. Remove large Transducer vacuum hose from "T" connection and install it on the Tester vacuum hose nipple, then connect Tester vacuum-hose (short hose) to Transducer hose "T" connection. See Figure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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