Pinpoint Tests RI: Reductant Temperature Sensor: Introduction

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

reductant temperature sensor
reductant pump assembly
harness circuits: RDT and SIGRTN
reductant dosage control module (5H298)
PCM (12A650)

REDUCTANT TEMPERATURE SENSOR EXPECTED VALUES

Temperature (°C)	Temperature (°F)	Resistance (K Ohms, F-650/F-750)	Resistance (K Ohms, All Others)
-40	-40	45	336
-30	-22	26	177
-20	-4	16	97
-10	14	9.4	55
0	32	5.9	32
10	50	3.8	20
20	68	2.5	12
30	86	1.7	8
40	104	1.2	5.3
50	122	0.84	3.6
60	140	0.60	2.5
70	158	0.44	1.8
80	168	0.32	1.2

Fig 1: Identifying Reductant Heater And Sender Assembly Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
5	SIGRTN (Signal Return)
3	RDT (Reductant Temperature)

Fig 2: Identifying Reductant Pump Assembly Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
1	RDT (Reductant Temperature)

Fig 3: Identifying Reductant Dosage Control Module Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
90	SIGRTN (Signal Return)
56	RDT (Reductant Temperature)

Fig 4: Identifying Powertrain Control Module-T (PCM-T) Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
F-Series Super Duty	A	32 43 8	SIGRTN SIGRTN RDT
F-650/F-750	A	42 38	SIGRTN RDT