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Home >> Mercedes Benz >> 2003 >> CLK430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (A/C-Heater Systems - Automatic) >> Testing >> Diagnostic Output
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Diagnostic Output

WARNING: This page is about a different car, the 1999 Mercedes-Benz CLK430, 1999 Mercedes-Benz CLK320, and 1998 Mercedes-Benz CLK320. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect A/C push-button control unit connectors. Connect socket box to A/C push-button control unit left connector. Connect DVOM negative lead to ground and positive lead to socket box terminal No. 1. Turn ignition on. DVOM should indicate 11-14 volts. If readings are not as specified, check A/C push-button control unit circuit. See WIRING DIAGRAMS . If circuit is okay, check A/C push-button control unit.

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