Mazda 3 Workshop Manual page 384

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
DETECTION
CONDITION
POSSIBLE CAUSE
Diagnostic procedure
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• The PCM monitors changes in input voltage from the neutral switch. If the
PCM does not detect PCM terminal 1S voltage changes while running vehicle
with vehicle speed above 30 km/h {19 mph} and clutch pedal turns press and
depress 10 times repeatedly, the PCM determines that the neutral switch
circuit has 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 is available.
• The DTC is stored in the PCM memory.
• Neutral switch malfunction
• Poor connection of neutral switch connector or PCM connector
• Short to ground in wiring harness between neutral switch terminal B and PCM
terminal 1S
• Open circuit in wiring harness between neutral switch terminal B and PCM
terminal 1S
• Open circuit in wiring harness between ground and neutral switch terminal A
• PCM malfunction
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