Mazda 6 Service Manual: Mass air flow (maf) sensor inspection
Voltage Inspection
Note
- Perform the following inspection only when directed.
1. Visually inspect for the following on the MAF sensor.
- Damage
- Cracks
- Terminal bends
- Terminal rust
- If any of the above are found, replace the MAF sensor.
- If the MAF PID value is out of specification, carry out the Circuit Open/Short Inspection.
Circuit Open/Short Inspection
1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)
2. Disconnect the MAF sensor connector.
3. Inspect the following wiring harnesses for open or short. (Continuity check)
Open circuit
- If there is no continuity, the circuit is open. Repair or replace the harness.
- MAF sensor terminal A (harness-side) and main relay terminal C (harness-side)
- MAF sensor terminal B (harness-side) and PCM terminal 2AC (harness-side)
- MAF sensor terminal C (harness-side) and PCM terminal 1P (harness-side)
Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the harness.
- MAF sensor terminal A (harness-side) and body GND
- MAF sensor terminal C (harness-side) and power supply
- MAF sensor terminal C (harness-side) and body GND
- MAF sensor terminal B (harness-side) and power supply
Intake air temperature (iat) sensor inspection
Resistance Inspection
Note
Perform the following inspection only when directed.
1. Disconnect MAF/IAT sensor.
2. Measure the resistance between the MAF/IAT sensor terminals D and E using
an ...
Throttle position (tp) sensor inspection
Note
Perform the following inspection only when directed.
Resistance Inspection
1. Perform the following test only when directed.
If as specified but TP PID value is out of specification, ...
Other materials:
Mazda 6 Service Manual: Precautions before welding
Vehicles have various electrical parts. To protect the parts from excessive
current generated when welding, be sure to perform the following procedure.
1. Turn the ignition switch to the LOCK position.
2. Disconnect the battery cables.
3. Securely connect the welding machine to the ground nea ...
Mazda 6 Service Manual: Outside Temperature Display (Without Multi-information Display)
When the ignition is switched ON, the outside temperature is displayed.
NOTE
Under the following conditions, the outside temperature display may differ
from the actual outside temperature depending on the surroundings and vehicle conditions:
Significantly cold or hot temperatures.
Sudden ...