DTC P0850:00: Notes

DTC P0850:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P0850:00	Neutral switch input circuit problem
DETECTION CONDITION	The PCM monitors the changes in the 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 the clutch pedal is pressed and depressed 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 first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Neutral switch connector or terminal malfunction Open circuit in wiring harness between neutral switch terminal B and body ground Neutral switch malfunction Short to ground in wiring harness between neutral switch terminal A and PCM terminal 1S PCM connector or terminal malfunction Short to power supply in wiring harness between neutral switch terminal A and PCM terminal 1S Open circuit in wiring harness between neutral switch terminal A and PCM terminal 1S PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P0850:00

Neutral switch input circuit problem

DETECTION CONDITION

The PCM monitors the changes in the 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 the clutch pedal is pressed and depressed 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 first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Neutral switch connector or terminal malfunction
Open circuit in wiring harness between neutral switch terminal B and body ground
Neutral switch malfunction
Short to ground in wiring harness between neutral switch terminal A and PCM terminal 1S
PCM connector or terminal malfunction
Short to power supply in wiring harness between neutral switch terminal A and PCM terminal 1S
Open circuit in wiring harness between neutral switch terminal A and PCM terminal 1S
PCM malfunction

Courtesy of MAZDA MOTORS CORP.