Manifold Absolute Pressure (Map) Sensor

DTC DETECTION CONDITION POSSIBLE COUSES CHART

DTC P0106, P0107, P0108, P0109	MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
DETECTION CONDITION	P0106 indicates Manifold Absolute Pressure (MAP) sensor input to the 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 CAUSES	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, ETC, and other sensors to determine fuel needs based on intake air charge. The 2.5L and 3.0L engines utilizes a thermal Manifold Absolute Pressure (MAP) sensor.
Courtesy of MAZDA MOTORS CORP.

DTC DETECTION CONDITION POSSIBLE COUSES CHART

STEP	INSPECTION		ACTION
1	PCM QUICK TEST Was PCM Quick Test carried out?	Yes	GO to the next step.
1	PCM QUICK TEST Was PCM Quick Test carried out?	No	CARRY OUT the 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 (2.5L). Is the voltage between 4.0-5.5 volts?	Yes	Key OFF. GO to the next step.
2		No	Key OFF. See 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 (3.0L) or MAP sensor pin 2, harness side and MAP sensor pin 2, component side (2.5L). 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 the next step.
3		No	Key OFF. INSTALL a new the MAP sensor. See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION - 2.5L or MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REMOVAL/INSTALLATION - 3.0L . GO to step 6.
4	CHECK MAP CIRCUIT FOR SHORT TO VREF OR 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 1 and pin 3 (3.0L), harness side, or between MAP sensor pin 1 and pin 4 (2.5L), harness side. Are the resistances greater than 10K ohms?	Yes	GO to the next step.
4		No	REPAIR short between circuits. GO to step 6.
5	CHECK MAP CIRCUIT FOR OPEN IN HARNESS Measure the resistance between PCM pin E40 and MAP sensor pin 1, harness side. Is the resistance less than 5 ohms?	Yes	INSTALL a new the PCM. See POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION - 2.5L or POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION - 3.0L . GO to the next step.
5		No	REPAIR open circuit. GO to the next step.
6	VERIFY TROUBLESHOOTING OF DTCs COMPLETED Disconnect all the PCM connectors. Check for: corrosion damaged pins pushed-out pins Connect all connectors and make sure they seat correctly. Clear DTCs from PCM memory using IDS or equivalent tester generic OBD II tester. Carry out the PCM Quick Test. See PCM QUICK TEST . Is the same DTC present?	Yes	INSTALL a new PCM. See POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION - 2.5L or POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION - 3.0L . REPEAT the PCM Quick Test. See PCM QUICK TEST .
6		No	If any other DTC is present, go to applicable DTC inspection. If no DTC is present, troubleshooting complete.