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Test F: Output Shaft Speed Sensor

WARNING: This page is about a different car, the 2001 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Connect NGS tester to DLC. Start engine. Access PSG PID. Drive vehicle and monitor PSG PID. If PSG PID increases as vehicle speed increases, replace TCM. See TRANSMISSION CONTROL MODULE  under REMOVAL & INSTALLATION. If PSG PID remains constant, go to next step.
  2. Turn ignition off. Disconnect OSS sensor harness connector C164. Measure resistance between terminals No. 1 (component side) and No. 2 (component side) at OSS harness connector C164. See Figure . If resistance is 500-650 ohms, go to next step. If resistance is not 500-600 ohms, replace OSS.
  3. Measure resistance between terminals No. 2 (component side) and No. 3 (component side) at OSS harness connector C164. If resistance is greater than 10 k/ohms, go to next step. If resistance is not greater than 10 k/ohms, replace OSS.
  4. Disconnect TCM harness connector C277B. Measure resistance of White wire between terminal No. 3 at OSS harness connector and terminal No. 5 at TCM harness connector C277B. See Figure and Figure . If resistance is greater than 5 ohms, repair open in White wire. If resistance is not grater than 5 ohms, go to next step.
  5. Measure resistance of Orange wire between terminal No. 2 at OSS harness connector C164 and terminal No. 18 at TCM harness connector C277B. If resistance is greater than 5 ohms, repair open in Orange wire. See WIRING DIAGRAMS  . If resistance is not greater than 5 ohms, go to next step.
  6. Measure resistance between terminal No. 5 (White wire) at TCM harness connector C277B and ground. If resistance is greater than 10 k/ohms, replace TCM. See TRANSMISSION CONTROL MODULE  under REMOVAL & INSTALLATION. If resistance is not greater than 10 k/ohms, repair short to ground in White wire.
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