Pinpoint Test RB: Exhaust Gas Temperature (EGT) Sensor: Introduction

WARNING: MANUAL REGENERATION OF THE PARTICULATE FILTER CAUSES THE EXHAUST GAS TO QUICKLY GET VERY HOT. INITIATE A MANUAL REGENERATION ONLY WHEN THE VEHICLE IS ON THE GROUND WITH THE AREA AROUND THE TAILPIPE FREE OF PEOPLE, OBSTRUCTIONS, FOREIGN MATERIAL OR OTHER ITEMS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY.

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:

EGT sensor (5J213)
harness circuits: EGT11, EGT21 and SIGRTN
PCM (12A650)

EGT Sensor Temperature And Resistance Specifications

Temperature		Temperature Sensor Value	EGT PID
°C	°F	Resistance (K ohms)	(Volts)
900	1652	0.09	0.41
850	1562	0.11	0.48
800	1472	0.13	0.58
750	1382	0.16	0.70
700	1292	0.21	0.86
650	1202	0.27	1.06
600	1112	0.36	1.26
550	1022	0.5	1.67
500	932	0.73	2.1
450	842	1.1	2.62
400	752	1.77	3.2
350	662	3.09	3.78
300	572	5.92	4.28
250	482	12.39	4.63
200	392	30.28	4.84

Fig 1: Exhaust Gas Temperature Bank 1, Sensor 1 (EGT11) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
1	EGT11 (Exhaust Gas Temperature Bank 1, Sensor 1)

Fig 2: Exhaust Gas Temperature Bank 2, Sensor 1 (EGT21) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
1	EGT21 (Exhaust Gas Temperature Bank 2, Sensor 1)

Powertrain Control Module (PCM) Connector

For PCM connector views or reference values, refer to REFERENCE VALUES .

Vehicle	Connector	Pin	Circuit
Expedition, Navigator	198 PIN	B30 E24 B30 B31	SIGRTN EGT21 SIGRTN EGT11
Mustang 2.3L	198 PIN	B17 B29	SIGRTN EGT11
Mustang 5.0L	306 PIN	T28 B43 T12	EGT21 SIGRTN EGT11
All other vehicles	198 PIN	B18 B32	SIGRTN EGT11