mm) deep could cause internal damage to the
DPF, causing it to malfunction.
8.
Check for heat discoloration on the surface of
the ATD. Heat discoloration may indicate internal
damage; especially around the DPF.
9.
Check any wires, lines, or hoses within 4 inches
(10 cm) of the exhaust system for heat damage.
Repair or reroute as needed.
08/20/2009
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
9
15
NOTE: The sensor box (item 8) contains the SCR inlet and outlet NOx sensors, DPF outlet pressure sensor, and the
DOC inlet pressure sensor.
1.
DOC Outlet Temperature
Sensor
2.
DOC Inlet Pressure Sensor
Port
3.
DOC Inlet Temperature Sensor
4.
Front Heat Shield
5.
DEF Nozzle
6.
Exhaust Outlet
7.
DEF Metering Unit
8.
Sensor Box (see note above)
9.
Exhaust Inlet
10. SCR Outlet Temperature
Sensor
11. SCR Outlet NOx Sensor Port
12. SCR Inlet NOx Sensor Port
13. 14-Pin Connectors
14. DPF Outlet Pressure Sensor
Port
15. SCR Inlet Temperature Sensor
Fig. 1, One-Box ATS Sensor Locations (EPA10)
Exhaust
49
122SD and Coronado 132 Maintenance Manual, February 2016
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