Diamante Sedan V6-2972cc 3.0L DOHC (1993)
NOTE: If the air flow sensor fails, the intake air volume cannot be measured and as a result, normal fuel injection control is no longer available.
However, the vehicle will run using the programmed value.
Harness Test
1. Disconnect the air flow sensor connector and turn the key to the ON position.
2. Using a voltmeter, measure the terminal voltage between the harness connector terminal 3 and ground.
Voltage: 4.8 - 5.2 Volts.
3. Using a voltmeter, measure the power supply voltage between the harness connector terminal 4 and ground.
Voltage: System voltage.
4. Check for continuity of the ground circuit of the air flow sensor, between the harness connector terminal 5 and ground.
Continuity: Should exist
If any of the previous tests produce unsatisfactory results, the harness will need to be repaired or replaced. Once repairs have been completed,
clear the trouble codes and road test the vehicle to confirm that the repair has corrected the problem and the code doesn't return.
If the same trouble code reoccurs, it is possible that there is an intermittent failure of the component or the ECM. Check for looseness at all
harness junctions and test for an intermittent failure.
