Pinpoint Test Dg: Knock Sensor (KS): Introduction

WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2020 Lincoln Navigator, 2020 Lincoln Nautilus, 2020 Lincoln MKZ, 2020 Lincoln Corsair, and 2020 Lincoln Continental. 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 sensor bank 1, sensor 1 (KS11), knock sensor bank 1, sensor 2 (KS12), knock sensor bank 2, sensor 1 (KS21) and knock sensor bank 2, sensor 2 (KS22) (12A699)
harness circuits: KS11, KS11RTN, KS12, KS12RTN, KS21, KS21RTN, KS22, and KS22RTN
PCM (12A650)

Fig 1: Knock Sensor Bank 1, Sensor 1 (KS11) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
KS11 (Knock Sensor 11)	2
KS11RTN (Knock Sensor 11 Signal Return)	1

Fig 2: Knock Sensor Bank 1, Sensor 2 (KS12) Connector

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
KS12 (Knock Sensor 12)	2
KS12RTN (Knock Sensor 12 Signal Return)	1

Fig 3: Powertrain Control Module (PCM) Connector - For PCM Connector Views

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
KS11 (Knock Sensor 11)	E11
KS11RTN (Knock Sensor 11 Signal Return)	E12
KS12 (Knock Sensor 12)	E42
KS12RTN (Knock Sensor 12 Signal Return)	E43