Unit Check (Quick Check): Aircon

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This diagnostic tests the climate bus connection (AC-SI and AC-SO) between the navigation unit and climate control unit. Make sure the engine is running for this test.

If connection shows NG, the bus line may be failure, Check for hard error codes (see How to Check Error History (Navigation DTCs) ).

NOTE: If this test is run with the ignition switch in ACCESSORY (I), the result will be NG.

Fig 1: Screen Display - Aircon

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