Component Inspection

Install Scantool and monitor the "MASS AIR FLOW" parameter on the Scantool data list.

SPECIFICATION:

DTC P0101 SPECIFICATION TABLE

Test Condition	Scan tool data
	1.8/2.0		2.4
	MAFS (V)	MAFS (Kg/h)	MAFS (V)	MAFS (Kg/h)
Normal value with ignition "ON" & Engine "OFF"	Approx. 0.1	Approx. 6.1	Approx. 0.1	Approx. 3.6
Normal value with idle after warm up	Approx.1.0~1.3	Approx.10~13	Approx. 1.0~1.3	Approx. 10~13
2000RPM without load	Approx. 1.6~1.8	Approx.26~30	Approx.1.6~2.0	Approx.26~32
Normal value with accelerating and decelerating after starting	The MAFS and TPS signals increase at the same time with accelerating and decrease with releasing accelerator pedal

Fig 1: Scan Tool Display - Mass Air Flow

Courtesy of HYUNDAI MOTOR CO.

Is MAF sensor voltage near the specified value?
YES
- Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Check MAF for contamination, deterioration, or damage. Substitute with a known-good MAF and check for proper operation. If the problem is corrected, replace MAF and then go to "VERIFICATION OF VEHICLE REPAIR " procedure