6 V6-3.0L DOHC (2003)
Air Flow Meter/Sensor: Testing and Inspection
MASS AIR FLOW (MAP) SENSOR INSPECTION
NOTE: Perform the following inspection only when directed.
Visual Inspection
1. Visually inspect for the following on the MAF/IAT sensor.
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Damage
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Cracks
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Terminal bends
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Terminal rust
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If any of the above are found, replace the MAF/IAT sensor. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.)
MAF Rate and Load Value
NOTE: The scan tool shows the MAF rate and load value.
Circuit Open/Short Inspection
1. Disconnect the PCM connector.
2. Inspect the following harness for open or short circuit. (Continuity check)
Open circuit
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MAF/IAT sensor terminal A (harness-side) and main relay terminal C (harness-side)
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MAF/IAT sensor terminal B (harness-side) and PCM terminal 77 (harness-side)
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MAF/IAT sensor terminal C (harness-side) and PCM terminal 88 (harness-side)
Short circuit
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MAF/IAT sensor terminal A (harness-side) and body GND
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MAF/IAT sensor terminal B (harness-side) and power supply
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MAF/IAT sensor terminal C (harness-side) and power supply
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MAF/IAT sensor terminal C (harness-side) and body GND
