Checking the power supply

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

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Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

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Fig 4: Locating Rear Electronic Module (REM) Behind Left-Hand Side Panel In Cargo Compartment

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Refer to Checking cable and component