PINPOINT TEST DG: Knock Sensor (KS): Introduction

This pinpoint test is intended to diagnose the following:

Fig 1: Knock Sensor 1 (KS1) Connector - A

Courtesy of FORD MOTOR CO.

Fig 2: Knock Sensor 1 (KS1) Connector - B

Courtesy of FORD MOTOR CO.

Fig 3: Knock Sensor 1 (KS1) Connector - C

Courtesy of FORD MOTOR CO.

Fig 4: Knock Sensor 1 (KS1) Connector - D

Courtesy of FORD MOTOR CO.

Fig 5: Knock Sensor 1 (KS1) Connector - E

Courtesy of FORD MOTOR CO.

Fig 6: Knock Sensor 1 (KS1) Connector - F

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Edge, F-Super Duty 6.8L, MKX, Sable, Taurus, Taurus X	A	3 4 1 2	KS2+ KS2- KS1+ KS1-
Escape/Mariner, Fusion 2.3L, Milan 2.3L	B	1 2	KS1+ KS1-
Expedition, Navigator	C	1 2	KS1+ KS1-
F-150 4.2L, Ranger 3.0L	D	1 2	KS1+ KS1-
F-150 5.4L, F-Super Duty 5.4L, Mark LT	C	2 1	KS1+ KS1-
Fusion 3.0L, Milan 3.0L, Ranger 2.3L	B	2 1	KS1+ KS1-
MKZ	A	1 2	KS1+ KS1-
Mountaineer 4.6L	E	1 2	KS1+ KS1-
Mustang 4.6L	E	3 4	KS1+ KS1-
All other vehicles	F	2 1	KS1+ KS1-

Fig 7: Knock Sensor 2 (KS2) Connector - A

Courtesy of FORD MOTOR CO.

Fig 8: Knock Sensor 2 (KS2) Connector - B

Courtesy of FORD MOTOR CO.

Fig 9: Knock Sensor 2 (KS2) Connector - C

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition, F-Super Duty 5.4L, Navigator	A	1 2	KS2+ KS2-
F-150, Mark LT	A	2 1	KS2+ KS2-
Mustang	B	1 2	KS2+ KS2-
All other vehicles	C	3 4	KS2+ KS2-

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

Vehicle	Connector	Pin	Circuit
Edge, MKX, Sable, Taurus, Taurus X	190 Pin	E31 E30 E49 E48 B29, B64 B51	KS2+ KS2- KS1+ KS1- VREF VPWR
Escape/Mariner	150 (50-50-50) Pin	E32 E20 E40 B35	KS1+ KS1- VREF VPWR
Expedition, MKZ, Navigator	140 Pin	E31 E30 E49 E48 E57 B51	KS2+ KS2- KS1+ KS1- VREF VPWR
F-150 4.6L, F-150 4.2L	190 Pin	E49 E48 E57 B51	KS1+ KS1- VREF VPWR
F-150 5.4L, Mark LT	190 Pin	E31 E30 E49 E48 E57 B51	KS2+ KS2- KS1+ KS1- VREF VPWR
F-Super Duty, Mustang 4.6L	170 Pin	E31 E30 E49 E48 E57 B35	KS2+ KS2- KS1+ KS1- VREF VPWR
Focus	190 Pin	E46 E47 E63 B67	KS1+ KS1- VREF VPWR
Fusion, Milan	140 Pin	E49 E48 E57 B51	KS1+ KS1- VREF VPWR
All other vehicles	170 Pin	E49 E48 E57 B35	KS1+ KS1- VREF VPWR