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DTC P0715/15: MAINSHAFT Speed Sensor

WARNING: This page is about a different car, the 1998 Honda Odyssey, 1998 Honda Accord, and 1998 Acura 2.3CL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: DTC P0715 does NOT confirm an electrical problem in mainshaft speed sensor or circuit. This DTC can also be caused by a mechanical problem in transaxle.
  1. Using scan tool, retrieve A/T freeze data. Clear fault codes and road test vehicle under same conditions freeze data was recorded. If fault code returns, go to next step. If fault code does not return, problem is intermittent, check mainshaft speed sensor and PCM connections.
  2. Ensure mainshaft and countershaft speed sensors are installed properly. See COUNTERSHAFT SPEED SENSOR  or MAINSHAFT SPEED SENSOR  under REMOVAL & INSTALLATION. Disconnect mainshaft speed sensor harness connector. Using a DVOM, measure resistance between sensor terminals. See MAINSHAFT SPEED SENSOR  under COMPONENT TESTING.
  3. If resistance is not 400-600 ohms, replace mainshaft speed sensor. If resistance is 400-600 ohms, disconnect 16-pin PCM harness connector "D". Check for continuity between ground and 16-pin PCM harness connector "D", terminals No. 11 (Red wire) and No. 12 (White wire). See Figure .
  4. If continuity is present, repair short to ground in Red wire or White wire between PCM and mainshaft speed sensor. If continuity is not present, reconnect mainshaft speed sensor harness connector. Measure resistance between 16-pin PCM harness connector "D", terminals No. 11 (Red wire) and No. 12 (White wire).
  5. If resistance is not 400-600 ohms, go to next step. If resistance is 400-600 ohms, go to DTC P0720/9: COUNTERSHAFT SPEED SENSOR  . Check for loose PCM harness connectors. Replace PCM with a known-good unit if necessary.
  6. Disconnect mainshaft speed sensor harness connector. Check Red wire for continuity between 16-pin PCM harness connector "D", terminal No. 11 and mainshaft speed sensor harness connector. If continuity is present, go to next step. If continuity is not present, repair open in Red wire between 16-pin PCM harness connector "D" and mainshaft speed sensor harness connector.
  7. Check White wire for continuity between 16-pin PCM harness connector "D", terminal No. 12 and mainshaft speed sensor harness connector. If continuity is present, check for loose PCM harness connectors. Replace PCM with a known-good unit if necessary. If continuity is not present, repair open in White wire between 16-pin PCM harness connector "D" and mainshaft speed sensor harness connector.
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