Connecting Measuring Unit To Ecu

NOTE: Measuring unit may also be known breakout box.

CAUTION: While connecting and disconnecting adapter, ECU must not have live voltage as it could be damaged.

Connect measuring unit. Turn ignition off. Remove fuse No. 1 (11B/1) in central relay unit. Disconnect ECM. Connect measuring unit to ECU connector. See Fig 1 .

Fig 1: Connecting Measuring Unit (999-3070) To ECU

Courtesy of VOLVO CARS OF NORTH AMERICA.