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, Transit)	Resistance (K Ohms, All Others)
-40	-40	336	45
-30	-22	177	26
-20	-4	97	16
-10	14	55	9.4
0	32	32	5.9
10	50	20	3.8
20	68	12	2.5
30	86	8	1.7
40	104	5.3	1.2
50	122	3.6	0.84
60	140	2.5	0.60
70	158	1.8	0.44
80	176	1.2	0.32

Fig 1: Reductant Pump Assembly Connector

Courtesy of FORD MOTOR CO.

Harness Side

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

Fig 2: Reductant Quality Module Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit

Fig 3: Powertrain Control Module-T (PCM-T) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
RDT (Reductant Temperature)	38
SIGRTN (Signal Return)	43