Checking The Power Supply And Ground At The Rear Control Module

Check the voltage to ground at rear control module terminal #B26 (#E6). The voltage must be at least battery voltage minus 3 V.

Check the control module connector. Check for contact resistance and oxidation. Check for loose connections. Check for damage carefully.

Check the wiring between rear control module terminal #B21 (#E1) and the ground terminal. Check for an open-circuit.

Remedy as necessary.

Other information: 

• To access the rear control module connector, see RELAY/FUSE BOX CARGO COMPARTMENT/REAR ELECTRONIC MODULE (REM), REPLACING
• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

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  Refer to VERIFICATION