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SCR metering module injection pattern

The injection pattern of the metering module must consist of three evenly distributed circles. To check, hold a piece of crepe paper at a distance of 20-40 cm before the uncovered metering module. Activate the metering module with the diagnosis system.

Fig 1: SCR Metering Module Injection Pattern

Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	Metering module: Valve opening
2	Injection pattern of the metering module on paper