Test 10: CAN H Data Line Open (SLK230)

Turn ignition switch to LOCK position. Disconnect PSE control module from breakout box leaving breakout box connected to PSE control module harness connector. Disconnect combination control module harness connector. Connect combination control module harness connector to another breakout box. Measure resistance between terminal No. 10 at PSE control module breakout box and terminal No. 78 at combination control module breakout box. If resistance is one ohm or less, CAN H data line is okay at this time. If resistance is greater than one ohm, repair open in CAN H data line. See WIRING DIAGRAMS .