Pinpoint Test JH: Engine Speed Signal: Introduction
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
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 HYBRID 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:
- harness circuits: clean tach output (CTO)
- powertrain control module (PCM) (12A650)
- transaxle assembly (7000)
TRANSAXLE ASSEMBLY-B CONNECTOR PINS REFERENCE CHART
| Pin | Circuit |
|---|---|
| 4 | TMAC (Torque of Motor - AC signal) |
| 9 | TGAC (Torque of Generator - AC signal) |
| 5 | GMSDN (Generator Motor Shutdown) |
| 7 | ISDN2 (Immediate Shutdown 2) |
| 1 | CTO (Clean Tachometer Output) |
PCM CONNECTOR PINS REFERENCE CHART
| Pin | Circuit |
|---|---|
| B10 | CTO (Clean Tach Out) |