CUMMINS 5.0L

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of NISSAN NORTH AMERICA, INC.

A.	Relay box	B.	View with grille removed	C.	Behind LH center of instrument panel (view with A/C assembly removed from vehicle)
D.	Center of instrument panel	E.	Behind RH center of instrument panel (view with A/C assembly removed from vehicle)	F.	Behind RH side of instrument panel (view with A/C assembly removed from vehicle)

No.	Component	Description
1.	IPDM E/R	A/C relay is integrated into IPDM E/R. IPDM E/R operates A/C relay when A/C compressor request signal is received from ECM via CAN communication line. Refer to Component Parts Location for detailed installation location.
2.	ECM	The ECM sends an A/C compressor ON request to the IPDM E/R based on the status of engine operation and load as well as refrigerant pressure information. If all the conditions are met for A/C operation, the ECM transmits the A/C compressor ON request to the IPDM E/R. The ECM shares the refrigerant pressure sensor signal, engine RPM, and engine coolant temperature with the front air control via CAN communication line. Refer to Component Parts Location for detailed installation location.
3.	A/C compressor	Refer to A/C Compressor .
4.	BCM	BCM transmits blower motor ON signal to the front blower motor relay. Refer to Component Parts Location for detailed installation location.
5.	Fuse block (J/B) (Front blower motor relay)	Located in the passenger compartment behind the instrument panel RH, the fuse block (J/B) contains the front blower motor relay and several fuses required for the air conditioner control system. The front blower motor relay controls the flow of current to fuse 17 and 27 in the fuse block (J/B). The relay is connected directly to ground and is controlled by the BCM.
6.	PTC relay-2	Refer to PTC Heater (Cummins 5.0L) .
7.	PTC relay-3	Refer to PTC Heater (Cummins 5.0L) .
8.	PTC relay-1	Refer to PTC Heater (Cummins 5.0L) .
9.	Ambient sensor	Refer to Ambient Sensor .
10.	Refrigerant pressure sensor	Refer to Refrigerant Pressure Sensor .
11.	PTC heater	Refer to PTC Heater (Cummins 5.0L) .
12.	Front air control	The front air control controls the operation of the A/C and heating system based on inputs from the temperature control knob, the mode switches, the blower control dial, and inputs received from the ECM and combination meter across the CAN.
13.	PTC heater control	Refer to PTC Heater Control (Cummins 5.0L) .
14.	Mode door motor	Refer to Mode Door Motor .
15.	Air mix door motor	Refer to Air Mix Door Motor .
16.	Intake sensor	Refer to Intake Sensor .
17.	Intake door motor	Refer to Intake Door Motor .
18.	Variable blower control	Refer to Variable Blower Control .
19.	Front blower motor	Refer to Front Blower Motor .