Pinpoint Tests JD: Crankshaft Position (CKP) Sensor: Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

This pinpoint test is intended to diagnose the following:

CKP sensor (6C135)
harness circuits: CKP, SIGRTN and VREF
PCM (12A650)

Fig 1: Crankshaft Position (CKP) Sensor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
3	SIGRTN (Signal Return)
2	CKP (Crankshaft Position Sensor)
1	VREF (Reference Voltage)

Fig 2: Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
T13	VREF
T27	SIGRTN (Signal Return)
T6	CKP (Crankshaft Position Sensor)