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Manifold Absolute Pressure (Map)Sensor

DTC P0105, P0106, P0107, P0108, P0109 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0105, P0106, P0107, P0108, P0109 MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
DETECTION CONDITION
  • P0105 indicates Manifold Absolute Pressure (MAP) sensor input to the powertrain control module (PCM) is not within the calibrated value.
  • P0106 indicates Manifold Absolute Pressure (MAP) sensor input to the powertrain control module (PCM) is not within the calibrated value.
  • P0107 indicates the MAP sensor operating voltage went below 0.25 volts.
  • P0108 indicates the MAF/IAT signal went above 4.60 volts during engine operation or KOER Self-Test.
  • P0109 indicates the MAP signal is failing intermittently.
POSSIBLE CAUSE
  • Slow responding MAP sensor.
  • Circuit open or short to ground.
  • Damaged MAP.
  • PCM failure.
HINT MAP Sensor Description 
  • Detects barometric pressure in the engine compartment.
    • Used in conjunction with MAF, TPS, and other sensors to determine fuel needs based on intake air charge.
  • The 2.3L engine utilizes a thermal Manifold Absolute Pressure (MAP) sensor.
G04318948Courtesy of MAZDA MOTORS CORP.
DTC P0105, P0106, P0107, P0108, P0109 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1
  • Was PCM Quick Test performed? 
 Yes Go to next step.
No Perform PCM Quick Test. See PCM QUICK TEST  .
2 CHECK VOLTAGE BETWEEN VREF AND SIGRTN AT MAP SENSOR
  • Disconnect MAP sensor.
  • Key ON, Engine OFF (KOEO).
  • Measure the voltage between MAP sensor connector pin 1 and pin 3 (3.0L), or pin 2 and pin 4 (2.3L).
  • Is the voltage between 4.0-5.5 volts? 
 Yes Key OFF.
Go to next step.
No Key OFF.
GO to TEST 1: VEHICLE REFERENCE VOLTAGE (VREF) .
3 CHECK MAP SENSOR OPERATION
  • Key OFF.
  • Install a jumper wire between MAP sensor pin 1, harness side and MAP sensor pin 1, component side.
  • Install a jumper wire between MAP sensor pin 3, harness side and MAP sensor pin 3, component side.
  • Key ON, Engine Running (KOER).
  • Measure the voltage between MAP sensor connector pin 2, sensor side and ground.
  • Briefly increase engine RPM to 3, 000 RPM, then return to idle.
  • Monitor MAP voltage.
  • Did the voltage reading rapidly increase to greater than 2 volts, then rapidly decrease to less than 1 volt? 
 Yes Key OFF.
Go to next step.
No Key OFF.
Replace the MAP sensor.
Go to step 6.
4 CHECK MAP CIRCUIT FOR SHORT TO VREF AND SIGRTN IN HARNESS
  • Disconnect PCM.
  • Measure the resistance between MAP sensor pin 1 and pin 2, harness side.
  • Measure the resistance between MAP sensor pin 2 and pin 3 (3.0L), harness side, or between MAP sensor pin 1 and pin 4 (2.3L), harness side.
  • Are the resistances greater than 10K ohms? 
 Yes Go to next step.
No Repair short between circuits.
Go to step 6.
5 CHECK MAP CIRCUIT FOR OPEN IN HARNESS
  • Install Breakout Box, leave PCM disconnected.
  • Measure the resistance between PCM test pin E23 and MAP sensor pin 1 (2.3L) or pin 2 (3.0L), harness side.
  • Is the resistance less than 5 ohms? 
 Yes Replace PCM.
See POWERTRAIN CONTROL MODULE (PCM) .
Go to next step.
No Repair open circuit.
Go to next step.
6 VERIFY TROUBLESHOOTING OF DTCs COMPLETED
  • Perform PCM Quick Test. See PCM QUICK TEST  .
  • Is any DTC present? 
 Yes Go to applicable DTC inspection.
No Troubleshooting complete.
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