LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2003 >> I35 >> Repair and Diagnosis >> External Pages >> Different car >> Section 226 (Engine Control System) >> DTC P1780: Shift Change Signal >> Diagnostic Procedure >> 2. Check TCM Function
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

2. Check TCM Function

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Refer to TROUBLE DIAGNOSIS .

OK or NG 

  1. OK: GO TO 3.
  2. NG: Replace TCM. Refer to PRECAUTIONS .
scientia non olet · About LEMON Manuals