Mazda 6 Training Manual page 109

Vehicle Speed Sensor (VSS)
VSS circuit malfunction (P0500) (MTX vehicles without ABS)
• Vehicle speed signal does not input after the following conditions are met:
— Gear is in other than neutral position
— Load is above 40%
— Engine speed is 2,000 rpm or above
Idle Air Control (IAC) Valve
IAC system malfunction (P0505)
• The PCM monitors idle speed. If idle speed is 1,800 rpm or below for 3 s during KOER self test, the PCM
determines that the IAC system has a malfunction.
IAC system RPM lower than epected (P0506)
• Actual idle speed is lower than epected by 100 rpm for 14 s, when brake pedal is depressed (brake switch is
on) and steering wheel is held straight ahead (power steering pressure switch is off).
IAC system RPM higher than epected (P0507)
• Actual idle speed is higher than epected by 200 rpm for 14 s, when brake pedal is depressed (brake switch is
on) and steering wheel is held straight ahead (power steering pressure switch is off).
IAC valve circuit malfunction (P0511)
• If the PCM detects that the PCM terminal 4G voltage is above or below threshold when IAC control duty target
is within16—70%, the PCM determines that the IAC valve circuit has a malfunction.
Power Steering Pressure (PSP) Switch
PSP switch circuit malfunction (P0550)
• The PCM monitors PSP switch signal at the PCM terminal 1Z. If input voltage is low (switch stays on) for 1
minute when the VSS is above 60 km/h {37.3 mph} and ECT is above 60 ° ° ° ° C {140 ° ° ° ° F}, the PCM determines
that the PSP switch circuit has a malfunction.
PCM Configuration
PCM programming error (P0602)
• No configuration data in PCM.
Note
• If “PCM CONFIGURATION” is successful, the PCM stored DTC P0602 and illuminates the MIL (System i
s normal) Clear the DTC P0602 using WDS or equivalent after “PCM CONFIGURATION”.
• MIL goes off after three drive cycles with no failure (DTCs remain in PCM).
Control module vehicle options error (P0610)
• PCM data configuration error.
Variable Intake-air System (VIS) Control Solenoid Valve
VIS control solenoid valve circuit low input (P0661)
• The PCM monitors VIS control solenoid valve control signal at the PCM terminal 4R. If the PCM turns the VIS
control solenoid valve off but voltage at the PCM terminal 4R still remains low, the PCM determines that VIS
control solenoid valve circuit has a malfunction.
VIS control solenoid valve circuit high input (P0662)
• The PCM monitors VIS control solenoid valve control signal at the PCM terminal 4R. If the PCM turns the VIS
control solenoid valve on but voltage at the PCM terminal 4R still remains high, the PCM determines that VIS
control solenoid valve circuit has a malfunction.
Brake Switch
Brake switch input malfunction (P0703)
• The PCM monitors changes in input voltage from the brake switch. If the PCM does not detect the PCM
terminal 1K voltage changes while alternately accelerating and decelerating 8 times.
Clutch Switch
Clutch switch input malfunction (P0704)
• The PCM monitors changes in input voltage from the clutch switch. If the PCM does not detect the PCM
terminal 1R voltage changes while running vehicle with vehicle speed above 0 km/h {0 mph} and below 30
km/h {19 mph} 8 times alternately, PCM determines that clutch switch circuit has a malfunction.
F–48
ON-BOARD DIAGNOSTIC