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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> DTC/Circuit Diagnosis >> DTC P1815: M-Mode Switch >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC Trouble diagnosis name DTC is detected if... Possible cause
P1815 Manual Mode Switch Circuit
  • TCM monitors manual mode, non manual mode, up or down switch signal, and detects as irregular when impossible input pattern occurs 2 second or more.
  • Shift up/down signal of paddle shifter continuously remains ON for 60 seconds.(1)
  • Harness or connectors (These switches circuit is open or shorted.)
  • Mode select switch (Into A/T shift selector)
  • Position select switch (Into A/T shift selector)
  • Paddle shifter(1)
(1) With paddle shifter
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