LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2009 >> MX-5 Miata SV >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System LF 2.0L) >> DTC P0850 [LF] >> Notes

DTC P0850 [LF]: Notes

DTC P0850 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0850 Neutral switch input circuit problem
DETECTION CONDITION 
  • The PCM monitors changes in input voltage from the neutral switch. If the PCM does not detect the voltage changes while driving the vehicle at a vehicle speed above 30 km/h {19 mph}  and clutch pedal turns press and release 10 times  repeatedly, the PCM determines that the neutral switch circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Neutral switch connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Neutral switch malfunction
  • Open circuit in wiring harness between neutral switch terminal 2A and PCM terminal 1X
  • Open circuit in wiring harness between neutral switch terminal 1A and body ground
  • Short to ground in wiring harness between neutral switch terminal 2A and PCM terminal 1X
  • PCM malfunction
G06149995Courtesy of MAZDA MOTORS CORP.
scientia non olet · About LEMON Manuals