DTC 1605: Automatic Transmission (A/T) Control
- Check Input Signal Circuit
- Turn ignition off. Disconnect ECM and A/T control unit harness connector. See Figure and Figure
. Verify harness continuity between ECM connector terminal No. 6 and A/T control unit connector terminal No. 45 (Red/White wire). See Figure and Fig 1
. If continuity is present, go to next step. If continuity is not present, check harness and connectors between ECM and A/T control unit. Repair harness or connectors as necessary and perform FINAL CHECK.
- Check A/T control unit and ECM wiring harness connector pins for damage or corrosion. Check all circuit connectors for clean, tight fit. If fault is still present, repeat step 1).
Courtesy of NISSAN MOTOR CO., U.S.A.