DTC 43: Throttle Position (TP) Sensor
WARNING: This page is about a different car, the 1993 Nissan Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Check Power Supply - Turn ignition off. Disconnect TP sensor harness connector. See Fig 1 . Turn ignition on. Measure voltage between TP sensor connector terminal "c" (Pink wire) and ground. See Fig 2 . If voltage is about 5 volts, go to next step. If voltage is not as specified, repair harness or connectors as necessary.
- Check Ground Circuit - Turn ignition off. Check for continuity between TP sensor connector terminal "a" (Black/Green wire) and engine ground. Refer to Fig 3 . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.
- Check Input Signal Circuit - Disconnect ECM harness connector. Ensure continuity exists between ECM connector terminal No. 20 and TP sensor connector terminal "b" (White wire). See Fig 4 . If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary.
- Check Component - Inspect TP sensor. See I - SYS/COMP TESTS article. Replace TP sensor if necessary and perform FINAL CHECK in this article. If TP sensor is okay, repair ECM pin terminals and/or wiring harness connector.