DTC 43: Throttle Position Sensor (TPS)

Check Power Supply

Turn ignition off and disconnect TPS harness connector. Turn ignition on. Measure voltage between TPS connector terminal "A" (Red/Yellow wire) and ground. See Fig 1 and Fig 2 . If voltage is approximately 5 volts, go to next step. If voltage is not as specified, repair harness or connectors as necessary.

Check Ground Circuit

Turn ignition off. Verify harness continuity between TPS connector terminal "C" (Black wire) and engine ground. See 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. See Figure . Verify harness continuity between ECM connector terminal No. 23 (White wire) and TPS connector terminal "B". 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 TPS. See SYSTEM/COMPONENT TESTS article. Replace TPS if necessary and perform FINAL CHECK.

Fig 1: Locating TP Sensor & Harness Connector (G20)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: DTC 43, Checking Power Supply (G20)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: DTC 43, Checking Ground Circuit (G20)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: DTC 43, Checking Input Signal Circuit (G20)

Courtesy of NISSAN MOTOR CO., U.S.A.