REMOVAL/INSTALLATION [LF]
.)
VOLTAGE INSPECTION
1. Remove the MAF/IAT sensor without disconnecting the MAF/IAT sensor connector.
2. Turn the ignition switch to the ON position.
3. As the air gradually approaches the MAF detection part of the MAF/IAT sensor, verify that the MAF
sensor output voltage (M-MDS PID: MAF) varies.
If it cannot be verified even though the related wiring harnesses have no malfunction, replace the
MAF/IAT sensor. (See
MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT)
SENSOR REMOVAL/INSTALLATION [LF]
.)
CIRCUIT OPEN/SHORT INSPECTION
1. Disconnect the PCM connector. (See
PCM REMOVAL/INSTALLATION [LF]
.)
2. Inspect the following wiring harness for open or short circuit (continuity Inspection).
Open Circuit
If there is no continuity, there is an open circuit, Repair or replace the wiring harness.
MAF/IAT sensor terminal A and PCM main relay
MAF/IAT sensor terminal B and PCM terminal 1P
MAF/IAT sensor terminal C and PCM terminal 1AK
Short Circuit
If there is continuity, there is a short circuit. Repair or replace the wiring harness.
MAF/IAT sensor terminal A and body ground
MAF/IAT sensor terminal B and power supply
MAF/IAT sensor terminal C and power supply
MAF/IAT sensor terminal C and body ground
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata
Microsoft
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