Pinpoint Test Dg: Knock Sensor (KS): Introduction

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Mercury Grand Marquis, and 2009 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

This pinpoint test is intended to diagnose the following:

knock sensors KS1 and KS2 (12A699)
harness circuits: KS1+, KS1-, KS2+, and KS2-
powertrain control module (PCM) (12A650)

Fig 1: Knock Sensor 1 (KS1) Connector (1 Of 2)

Courtesy of FORD MOTOR CO.

Fig 2: Knock Sensor 1 (KS1) Connector (2 Of 2)

Courtesy of FORD MOTOR CO.

Fig 3: Knock Sensor 2 (KS2) Connector

Courtesy of FORD MOTOR CO.

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

POWERTRAIN CONTROL MODULE (PCM) CONNECTOR

Vehicle	Connector	Pin	Circuit
E-Series 4.6L, E-Series 5.4L, F-150 2V 4.6L, Focus	190-Pin	E46 E47 E63 B67	KS1+ KS1- VREF VPWR
Edge, Flex, MKS, MKX, Sable, Taurus, Taurus X	190-Pin	E31 E30 E49 E48 B29, B64 B51	KS2+ KS2- KS1+ KS1- VREF VPWR
Escape/Mariner 3.0L	190-Pin	E60 E59 E43 E42 E35 B67	KS2+ KS2- KS1+ KS1- VREF VPWR
Escape/Mariner 2.5L	190-Pin	E43 E42 E35 B67	KS1+ KS1- VREF VPWR
Expedition, F-150 3V 4.6L, F-150 5.4L, Navigator	190-Pin	E62 E61 E46 E47 E63 B67	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
Fusion, Milan	140 Pin	E49 E48 E57 B51	KS1+ KS1- VREF VPWR
MKZ	140 Pin	E31 E30 E49 E48 E57 B51	KS2+ KS2- KS1+ KS1- VREF VPWR
All other vehicles	170 Pin	E49 E48 E57 B35	KS1+ KS1- VREF VPWR