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Manifold Absolute Pressure (Map) Sensor

NOTE: The following test procedures are for DTCs P0107, P0108 and P0109.

Fig 1: Manifold Absolute Pressure (MAP) Sensor Detection Condition Possible Cause

G03723669

Courtesy of MAZDA MOTORS CORP.

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION/ACTION CHART

STEP	INSPECTION		ACTION
1	Was PCM Quick Test performed?	Yes	Go to next step.
1	Was PCM Quick Test performed?	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.
2		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.
3		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.
4		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.
5		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.
6		No	Troubleshooting complete.