Mustang ST3093-A Instructions Manual

1, SECTION 419-11 Electronic Compass CONTENTS PAGE DIAGNOSIS AND TESTING Electronic Compass ............................................................................................................................................................ 419-11-2 Principles of Operation .............…

9, Mustang ST3093-A PINPOINT TEST A: THE COMPASS IS INOPERATIVE (Continued) A7 CHECK THE COMPASS SIGNAL RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND (Continued) • Is the resistance less than 5 ohms between the auto-dimming interior mirror and the IPC, and greater than 10,000 ohms between the auto-dimming int…

6, PINPOINT TEST A: THE COMPASS IS INOPERATIVE (Continued) A3 CHECK THE COMPASS MODULE GROUND FOR CONTINUITY (Continued) • Is the resistance less than 5 ohms? A4 CHECK THE DTCs • Connect: Negative Battery Cable. • Connect: Auto-Dimming Interior Mirror C911, C9012 or C9039. • Ignition ON.…

8, PINPOINT TEST A: THE COMPASS IS INOPERATIVE (Continued) A6 CHECK THE COMPASS SIGNAL CIRCUIT FOR AN OPEN OR SHORT TO GROUND (Continued) • Is the resistance less than 5 ohms between the auto-dimming interior mirror and the IPC, and greater than 10,000 ohms between the auto-dimming …

10, This pinpoint test is intended to diagnose the following: • Compass zone setting • Compass calibration • Compass module (integral to the auto-dimming interior mirror) PINPOINT TEST B: THE COMPASS IS INACCURATE NOTICE: Use the correct probe adapter(s) when making measurements. Fail…

7, PINPOINT TEST A: THE COMPASS IS INOPERATIVE (Continued) A5 CHECK THE COMPASS SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE (Continued) (Continued) Option Content Positive Meter Lead Negative Meter Lead C9039-9 VMC31 (GY/BU) Ground • Is any voltage present? A6 CHECK THE COMPASS SIGNAL CIRCUIT…