Checking the power supply

Fig 1: Identifying Ignition ON

GLL101051

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on
Read off the power supply for the rear electronic module (REM) and the central electronic module (CEM).
The voltage for the rear electronic module (REM) and the central electronic module (CEM) must be approximately the same.

The fault is permanent if the voltage for the rear electronic module (REM) deviates by more than 3 V from the central electronic module (CEM).

If the voltage is approximately the same, this indicates an intermittent fault, i. e. the fault was present previously but is not active at the moment.

Fig 2: Identifying Connector C
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Locating Rear Electronic Module (REM) Behind Left-Hand Side Panel In Cargo Compartment
Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Checking cable and component