Mack MP8 - Selective Catalytic Reduction (SCR) Tampering

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Selective Catalytic Reduction (SCR) Tampering - Driver Warning & Inducement

1. Disconnected aftertreatment DEF tank level sensor 4. Disconnected aftertreatment DEF pump

2. Blocked aftertreatment DEF line or dosing valve 5. Disconnected SCR wiring harness

3. Disconnected aftertreatment DEF dosing valve 6. Disconnected NOx sensor

Triggers Aftertreatment DEF Tank

Low Level Indicator

Warning Lamp Inducement

No Tampering None None None

Tampering Diagnostic Trou-

ble Code (DTC) Pending

None

W303-

1623

None

Tampering DTC Confirmed None

W303-

1623

None

Tampering DTC Initial De-

tected + 10 hour

None

W303-

1623

25% torque reduction

Tampering DTC Initial De-

tected + 40 hours Diesel Fuel

Refueling >15%

None

W303-

1623

8 km/h (5 mph) road speed

limit

Note: Operator can not override the 8 km/h (5 mph) road speed limit (RSL).

Note: Vehicle has to be stationary before 8 km/h (5 mph) RSL becomes active.

Mack Body Builder Instructions CHU, CXU, GU, TD, MRU, LR

USA139046859 Date 5.2017 Body Builder; Engine, MP7, MP8, and MP10 Page 36 (43)

Mack MP8 - Selective Catalytic Reduction (SCR) Tampering - Driver Warning & Inducement