Selective Catalytic Reduction (SCR) System Procedure

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NOTE: If refilling the tank with diesel exhaust fluid does not clear the EXHAUST FLUID RANGE or EXHAUST FLUID EMPTY messages, the SCR System Refill Activation Reset can be carried out using the scan tool.

NOTE: Make sure there is no accelerator pedal position (APP) input during the deceleration event.

The Selective Catalytic Reduction (SCR) System Procedure is carried out to clear the SCR system messages and to allow the vehicle to exit the speed limited mode for the following messages:

Speed Limited To XX MPH In XXX MI Exhaust Fluid System Fault
XX MPH Max Upon Restart Exhaust Fluid System Fault
Speed Limited To XX MPH Exhaust Fluid System Fault

While monitoring the REDUCT_TNK_LV PID, add up to 9.46 L (2.5 gallons) diesel exhaust fluid until the PID reads 100%.
With the vehicle in PARK or NEUTRAL increase the engine speed to 1000 RPM while monitoring the EGT11, EGT12, EGT13 and EGT14 PIDs. Run the engine until the exhaust gas temperature is greater than 130°C (266°F) for a minimum of 2 minutes.
Accelerate steadily to 80 km/h (50 mph). Carry out a closed pedal deceleration event without applying the brake for 6 seconds. Repeat the closed pedal deceleration event 3 times.
Verify that the EGT13 PID temperature is greater than 220°C (428°F) and carry out 5 medium to hard acceleration events that are a minimum of 3 seconds in duration.